Ofertas de empleo para Kotlin

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada15 ene.

React Kotlin Android iOS Swift UX/UI Flutter React Native Sketch

We are looking for a talented UI/UX Designer to design intuitive, engaging, and visually appealing mobile app experiences. The ideal candidate will combine user-centered design principles with strong visual design skills to create seamless interactions across iOS and Android platforms.


Key Responsibilities:

● Design end-to-end user experiences for mobile applications (iOS & Android)
● Create user flows, wireframes, prototypes, and high-fidelity UI designs
● Conduct user research, usability testing, and translate insights into design solutions
● Collaborate with product managers, developers, and stakeholders to define requirements
● Develop and maintain design systems, style guides, and UI components
● Ensure designs meet accessibility, usability, and platform guidelines
● Iterate designs based on feedback, analytics, and user testing results
● Stay up to date with mobile UX trends, tools, and best practices

Required Skills & Qualifications:

Proven experience as a UI/UX Designer for mobile applications
● Strong portfolio demonstrating mobile-first design and problem-solving
● Proficiency in design tools such as Figma, Sketch, Adobe XD, or similar
● Solid understanding of iOS Human Interface Guidelines and Material Design
● Experience with prototyping and usability testing tools
● Knowledge of responsive and adaptive design principles
● Strong communication and collaboration skills

Preferred Qualifications:

● Experience working in Agile/Scrum environments
● Basic understanding of front-end development (Swift, Kotlin, React Native, or Flutter concepts)
● Experience designing for multiple devices and screen sizes
● Familiarity with accessibility standards (WCAG)

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada15 ene.

Teletrabajo Java Agile Jenkins Docker Kubernetes Kotlin Oracle AWS DevOps Spring ERP

Software Engineer - Risk, Payments & Accounting(Backend)

Country: Spain

Santander Auto Software is looking for a Back End Engineer to work in our Core Operations team looking after areas such as Accounting and Finance.

Santander Auto Software, a greenfield program where we are building a brand-new, state of the art global software platform and product suite that will be rolled out across Europe.

The business is 100% tech focused, comprised of skilled cross-border software builders, and with a leadership team made up of esteemed individuals with accomplished backgrounds in global tech players.

If you are looking for an opportunity to build creative technology solutions that positively impact hundreds of thousands of international customers, and relish large ownership and diverse technologies, join our team today!

Santander is proud of being an organization where there are equal opportunities regardless of gender identity, culture and disability. Our mission is to contribute to help more people and business prosper.

WHAT YOU WILL BE DOING

We are looking for skilled back end focused software engineers with experience working with Java (and/ or Kotlin) along with Spring Boot, Kubernetes and AWS. The role will be working on building solutions in our Core Operations team around payments, risk and accounting software. Ideally you will have experience working in a software on demand production environment in this area.

You will build Cloud-native, AWS-based, greenfield software and will have time and support to invent solutions to a wide variety of user, business, and technical challenges. We have no cut-and-paste roles and neither will your software be of the cut-and-paste (or integrate and configure) variety. We operate a ´build it and own it´ culture, and so you will have a DevOps and individual contributor mindset

These will be key hires for back-end building squads and help shape this area of the business for scale and be a key member of a fast-growing global team!

EXPERIENCE

- Domain knowledge in Financial products such as Accounting, Payments, Risk and calculation systems.

- Software development in Java (Spring Boot) or Kotlin - design, build, and deploy

- Production deployment experience working with AWS

- Experience with automated build and test systems for CI/CD (using Docker, Jenkins, etc)

- Experienced in true Agile and its engineering practices with a true DevOps mindset

- Any experience with financial products such as SAP, Oracle ERP, Netsuite will be beneficial

EDUCATION

- Bachelor´s Degree in Computer Science, Information Systems, or another related field. Or equivalent work experience.

SKILLS & KNOWLEDGE

- Back-end Development with Java or Kotlin

- Fluent in English

- Able to deal with ambiguity and change.

- A self-starter who´s able to work independently where necessary, without waiting for others. A strong sense of ownership is key to the way we work.

- Strong communication skills.

LOCATIONS

- The vacancies will be fully remote based out of either Spain, Portugal or the Netherlands.

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada15 ene.

Kotlin Android TDD Gradle

Who Are We?

Welcome to Welltech-where health meets innovation! As a global leader in Health & Fitness industry, we´ve crossed over 300 million installs with five life-changing apps, all designed to boost well-being for millions. Our mission? To transform lives through intuitive nutrition trackers, powerful fitness solutions, and personalized wellness journeys-all powered by a diverse team of over 750 passionate professionals with presence across 5 hubs.

Why Welltech? Imagine joining a team where your impact on global health and wellness is felt daily. At Welltech, we strive to be proactive wellness partners for our users, while continually evolving ourselves.

What We´re Looking For

This is a unique opportunity to build a platform from scratch, setting company-wide standards and driving the direction of our mobile technology. In the Mobile App Platform team, you will architect our next-gen mobile platform, directly shaping how millions experience wellness. You will design and implement core platform solutions, empowering product teams to rapidly build and customize applications. You will also own the mobile infrastructure blueprint, enabling teams to focus on features and experiments, free from underlying infrastructure concerns. This role demands a strong problem-solver who thrives on building, as you´ll define a platform that scales to millions, creating a lasting legacy in mobile wellness.

Key responsibilities:
- Help build and evolve scalable mobile infrastructure, tooling, and shared components to support multiple Welltech mobile apps
- Contribute to libraries, SDKs, and CI/CD pipelines that improve developer experience and apps quality
- Work closely with product teams to support the adoption of platform solutions
- Write clean, testable, and performant code with an eye on maintainability
- Support modularization, reusability, and standardization efforts across mobile apps
- Identify common problems across apps and solve them in a consistent, scalable way
- Participate in code reviews, documentation, and knowledge sharing within the team
- Collaborate cross-functionally with backend, frontend, security, and infrastructure teams to enable seamless integration and platform alignment

Required skills:
- Solid Android development experience with Kotlin, including fundamentals like coroutines, networking, persistence, and performance optimization
- Experience with Jetpack Compose and modular, scalable UI architectures
- Excellent understanding of architectural patterns (MVVM, MVI, DI) and modular codebases
- Proven ability to craft clean, maintainable, and scalable code
- Strong ability to design for reliability, scalability, and performance
- Experience working with CI/CD pipelines and tooling (e.g., Bitrise, Fastlane, Gradle, custom scripts)
- Strong advocate of design for testability, automated testing, and shift-left quality mindset
- Passion for improving developer experience and shipping high-quality code
- Product-minded approach with a bias for pragmatic, maintainable solutions

Nice to have:
- Experience with backend development
- Experience with backend-driven UI
- Hands-on experience with OWASP mobile security best practices
- Track record of building internal tools, shared components, or platform features at scale
- Experience implementing and advocating for methodologies that support fast iteration and high dev productivity (e.g. eXtreme Programming, Trunk Based Development, CI/CD mindset, BDD, TDD)

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada8 ene.

API Java MongoDB Docker Kubernetes Elasticsearch Kotlin TypeScript SaaS AWS Spring PostgreSQL React Kafka

Overview

At iptiQ by Swiss Re, we are building the next generation of digital life and health insurance. Our engineering teams are driving innovation across large-scale, cloud-native platforms that power millions of customer interactions. We blend modern software engineering with deep industry expertise to create solutions that are accessible, reliable, and user-centric. Our technology extends well beyond traditional insurance and encompasses data-intensive systems, modern architectures, digital health solutions, advanced analytics, and secure, high-performance services.

About the role

As a Lead Software Engineer, you will take ownership of significant cross-domain initiatives, influence architectural direction, and guide engineering teams through complex technical challenges. You will partner closely with Senior Engineering Managers (SEMs), architects, and cross-functional leads to plan and deliver large, strategic programs.

You will also serve as a technical role model-driving high-quality engineering practices, ensuring robust delivery forecasting, and elevating the technical maturity of your domain.

Our Technology Stack

Our cloud-native, multi-tenant SaaS platform runs on AWS. We use Kotlin, Java, SpringBoot, Docker, Kubernetes, Apache Kafka, MongoDB, and PostgreSQL on the backend, and ReactJS and TypeScript on the frontend. Our continuous delivery pipeline leverages GitLab. We are using Prometheus, ElasticSearch, Kibana and Grafana as our logging and monitoring stack.

Our mission

iptiQ is not just an insurance company; we are at the forefront of integrating technology into the life and health insurance space. We employ people with diverse technical backgrounds who are eager to solve some of the industry´s most complex problems and make a lasting impact on our customers globally. At iptiQ, you´ll not only be a part of transforming the insurance industry but also work on large-scale applications and new platforms that redefine how insurance products are developed and delivered. From revolutionizing underwriting processes to creating user-centric digital health tools, our engineers are at the heart of iptiQ´s mission to transform the world of insurance.

Ideal Candidate:

We are looking for someone who:
- Has strong technical depth in several components of our stack, with proven ability to lead complex engineering efforts.
- Operates with ownership and accountability over domain-quality and cross-domain delivery.
- Has an entrepreneurial mindset, continuously seeks improvement, and motivates teams through influence rather than authority.
- Demonstrates exceptional collaboration skills across engineering, product, architecture, and operations.
- Acts as a mentor and technical leader for engineers across multiple teams.

Key Responsibilities:
- Drive and deliver multi-quarter, cross-domain initiatives and support SEMs with planning, estimation accuracy, and technical alignment.
- Lead technical grooming for complex, cross-domain features and guide story preparation for small to medium domain work.
- Shape and communicate technical proposals (RFCs) and guide them through CTO-level decision-making.
- Act as a domain expert, providing guidance on architectural decisions and integration impacts.
- Independently design and develop high-quality features while continuously improving domain quality (logging, error handling, documentation, API clarity).
- Maintain strong engineering discipline by following DoR/DoD, avoiding unaligned refactoring, and ensuring clear, maintainable documentation.
- Achieve high delivery predictability (90-100% estimation accuracy) and effectively manage unplanned work within planned capacity.
- Mentor and support engineers across teams, elevating technical capabilities and cross-domain collaboration.

What We Offer:
- A supportive and collaborative team environment
- Opportunity to work on cutting-edge technologies
- Professional growth and learning opportunities
- Flexible working time and location

For Spain, the base salary range for this position is between EUR 60,000 and EUR 100,000 (for a full-time role). The specific salary offered considers:
- the requirements, scope, complexity and responsibilities of the role,
- the applicant´s own profile including education/qualifications, expertise, specialisation, skills and experience.

In addition to your base salary, Swiss Re offers an attractive performance-based variable compensation component, designed to recognise your achievements. Further you will enjoy a variety of global and location specific benefits.

Eligibility may vary depending on the terms of Swiss Re policies and your employment contract.

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada7 ene.

API Agile Cloud Coumputing GraphQL Kotlin Git Android DevOps

Senior Android Developer

Location: Hybrid - Barcelona, Spain (3 days onsite, 2 remote)
We are:

Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there´s no limit to what we can achieve.
Are you a fit?

Sounds awesome, right? Now, let´s make sure you´re a good fit for the role:
Key Responsibilities
- Apply agile software development practices and define application architecture models and programming standards.
- Design and implement processes for development, testing, monitoring, and change management while setting application development standards.
- Collaborate with product teams to manage technical scope and deliverables, identify strategic technical debt, and provide cost/benefit analysis and prioritization recommendations.
- Contribute hands-on by implementing Android features, fixing bugs, optimizing performance, and improving user experience.
- Participate in technical discussions, propose architectural improvements, and advocate for engineering best practices.

Must-have Skills (Remember to include years of experience)
- 6 years of professional experience in Android native mobile development.
- Strong hands-on experience with Kotlin and Jetpack Compose.
- Familiarity with data structures, system design, design patterns, API design, and architectures such as MVP, MVVM, and declarative UI.
- Experience with Git, Git workflows, and modern DevOps practices for mobile applications.
- Strong communication skills and collaboration experience with cross-functional teams.
- Bachelor´s degree in Computer Science, Software Engineering, or a related field.
- Advanced English level (written and verbal).

Nice-to-have
- A full-stack background or exposure to backend technologies.
- Familiarity with cloud services, GraphQL, Firebase, or related technologies.
- Experience working in media, news, or content-heavy mobile applications.
- A passion for mobile innovation and user experience; a background in journalism is a plus.
- AI Tooling Proficiency: Leverage AI tools to optimize day-to-day work, including drafting, analysis, research, or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.

What we offer
- A High-Impact Environment
- Commitment to Professional Development
- Flexible and Collaborative Culture
- Global Opportunities
- Vibrant Community
- Total Rewards

Specific benefits are determined by employment type and location.

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada4 ene.

. React C# PHP MySQL Python TSQL Kotlin Android REST TypeScript iOS Swift DevOps Redis Excel Symfony LESS Office

Join Proton and build a better internet where privacy is the default

At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online.

Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations.

Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online.

Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions.

We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here!

Purpose of the role: 

Proton continues to grow rapidly as increasing numbers of people across the globe seek greater privacy controls of their information online. To accelerate our growth, we are seeking a senior leader to drive engineering for one of our many existing or upcoming Products.

We are seeking a Director of Engineering to one of our existing or upcoming Products. This role involves setting and executing technical strategy, team management, and working closely with your senior product managers counterparts, to ensure high-velocity delivery of new products.

As a key member of the engineering leadership team, you will shape the company’s technical strategy and contribute to Proton’s mission of creating a privacy-centric internet. Each product will have its unique challenges and areas of focus, nevertheless we require all Engineering Directors for our Products to have a demonstrated track record of building and scaling customer facing applications, in either a B2C or B2B context, for millions of users, across multiple platforms (mobile, desktop, backend systems and platforms).

In addition to technical expertise, Engineering Directors as senior leaders within Proton, have excellent communication skills, a business mindset, and a strong sense of empathy for the end customers.

What you will do:

• Setting technical direction and vision for one of our Products
• Lead technical design and platform discussions
• Drive continuous improvement in our DevSecOps practices, and improve lead times and time to market while maintaining exceptional standards of product quality
• Hold yourself and team accountable for timely delivery of scalable, quality-focus user experiences and features
• Develop efficient processes, and motivate your team to operate with high velocity, ownership, and accountability
• Lead through others, and develop the next generation of engineering leaders at Proton
• Inspire, coach, and develop your teams
• Optimize your organizational structure, and continuously raise the bar on hiring
• Build strong relationships with senior leaders, and advance your long-term platform and engineering vision
• Contribute to Proton's technology and open source communities
• Foster an inclusive and diverse environment for your team to show up and give their best each day
  
  
  

Our Tech stack:

• Applied cryptography (PGP, TLS, etc.)
• REST APIs
• Event architectures
• HTTP networking
• SQL, Redis
• PHP (Symfony), Rust, Python
• iOS, macOS (Swift)
• Android (Kotlin, Jetpack)
• Web (Typescript, React)
• Desktop (C#, Swift)
• Infrastructure: MySQL / Ceph
  
  
  

We need you to have:

• Experience in software engineering in progressively complex roles
• Experience directly leading and managing engineers
• Demonstrable experience as a manager of managers
• A history of collaboration with senior leaders in engineering, product on developing technical and product strategy
• Great empathy and collaboration skills, and even greater resilience
• A curious, passionate, and growth-oriented mindset
• Deep experience as a hands-on software engineer creating well-crafted, maintainable systems
• Mobile-first background (ideally former mobile developer)
• Practical experience leading DevOps and SRE initiatives and driving best practices
• Experience with cryptography preferred
• Bonus points for each of the following:

• Experience with performance tuning and scaling across client, backend, infrastructure
• Working closely with C-level executives to align on direction, vision and execution
• Having both, the experience of operating at global scale with millions of customers but also thriving in the chaotic growth phase of scaling up to reach it.
  
  
  

What We Offer

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
• Flexible Working: You can define your own working hours as long as it works with team meetings.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.
  
  
  

Our Commitment to Diversity and Inclusion

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.

Candidate Privacy Notice

When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.

If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at [email protected].

Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.

To learn more about our privacy policy, please visit our privacy policy page.

• Flexibilidad horariaSí
• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada1 ene.

Agile Kotlin Android Gradle Office

Wallapop is a Barcelona based scale-up driven by the purpose to empower people to embrace a more conscious and human way of consumption. We believe in a world where collaborative economy is mainstream. This is what drives us.

Wallapop operates in Spain, Italy and Portugal, offering a catalogue of several hundreds of millions of products and services. Powered by technical innovation and continuous improvement, we bring together the scale & trust of classifieds with the marketplace´s convenience & reach. Our mission is to enable a connected trade ecosystem, making 2nd-hand the norm through smart use of technology.

Backed by top investors such as Accel, Insight Partners & Naver Corp we bring our total valuation to 806 million EUR and are embarking on our international journey with the aim to become the world´s best unique goods trading platform.

The Challenge

You will join a focused Topic Team, shipping features to millions of users while contributing to a constantly evolving 10+ year-old codebase. You will need to balance rapid feature delivery with keeping our stack modern and future-proof.

What you will face:
- Modern & Pragmatic Stack: A Kotlin-first app using MVVM+UDF, Coroutines, and Clean Code principles. All new features and our Design System are built using Jetpack Compose, and we are actively migrating legacy views.
- Modularization and DI:You will navigate a project of 50+ feature modules. We use Dagger/Anvil for DI and are currently evaluating Metro to further optimize our build times and leverage its latest features.
- Quality first: We maintain 70% test coverage using practices like snapshot testing and integration tests in our daily development. Final release checks are performed by running E2E tests (via Maestro) and manual regression testing.
- Production Stability: You will use our crash and performance monitoring systems to ensure your features run smoothly for our millions of users.

What You Will Do
- You´ll drive high-quality product experiences while helping the team grow. To do so, you will:
- Build and maintain feature modules owned by your team, acting as the guardian of their quality.
- Work with a cross-functional team (Product, Design, Backend) to help define and implement new features.
Ensure initiatives are aligned with both technical best practices and product goals.- Act as a technical reference for your team and share your experience with other Android Engineers across the Tribe.
- Help improve our architecture, tooling, and performance practices.
- Mentor your peers through code reviews, pairing, and knowledge sharing.
Apply a product-first mindset, balancing user value with technical excellence.

What We´re Looking For
- Strong experience building top-tier Android apps using technologies like Kotlin, Coroutines, Anvil, and Compose.
- An excellent Computer Science foundation (data structures, algorithms, software design).
- Experience working in large modular codebases shared by multiple teams.
- A data-driven mindset with strong analytical skills.
- The ability to balance technical trade-offs with product impact.
- Strong communication skills and a growth mindset, with an openness to learning and knowledge sharing.

What Would Be A Plus (optional***)
- Experience implementing a Design System.
- Experience with the Gradle build system and CI automation.
- Contributions to open-source projects or developer communities.
- A specific passion for accessibility standards and inclusive design.

Do note that all our jobs are Barcelona based. We follow a hybrid model where flexibility rules. We commit to a minimum of 6 days per month in the office. Each team self-organizes to decide on cadence and in-person/remote rituals.

Wallapop is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees as we want Wallapop to be a place for everyone.

We sponsor visa processes for international candidates when applicable and provide legal & admin support along the process combined with a competitive relocation package.

Additionally to the opportunity to contribute to an agile product set up and work together towards achieving our meaningful mission, we offer the following Perks & Benefits:
- Generous individual learning budget of 2k per year
- Group and individual English, Catalan & Spanish lessons as part of our working day
- Private Health Insurance with Alan
- Flexible working hours + short Fridays
- Flexible remuneration to deduct from gross salary (kindergarten/food/transport check)
- Gym & Wellness plan, including physiotherapist in the office
- Generous referral Program & Charity Donation
- Bonus for weddings & newborns
- Wallapop Renta (Tax income support)
- Monthly plan for free shipping, bumps & home-pick-up on our services
- Work anniversary Gifts and Birthday Surprises
- Contribution towards your WIFI in your monthly payroll
- One-off payment based on compensation package to go towards setting up your home office
- Relocation package (monetary support and legal advice) and visa sponsorship, if applicable
- 26 holidays per year
- TOP hardware of your choice (latest Apple or Windows)