Flutter Jobs in Spain.
All active Flutter roles based in Spain.
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Feedzai is the world’s first RiskOps platform for financial risk management, and the market leader in safeguarding global commerce with today’s most advanced cloud-based risk management platform, powered by machine learning and artificial intelligence. Feedzai is securing the transition to a cashless world while enabling digital trust in every transaction and payment type. The world’s largest banks, processors, and retailers trust Feedzai to protect trillions of dollars and manage risk while improving the customer experience for everyday users, without compromising privacy. Feedzai is a Series D company and has raised $282M to date. With a valuation of $2 billion, our technology protects 1 billion consumers and 90 billion transactions each year.
The Engineering (Tech) Team is responsible for all Feedzai product development. Together with Product Management and Data Science, we build the next generation of tools to catch fraud in real-time with a machine learning first approach. Formed by engineers and managed by engineers, at Feedzai, you will find one of the most talented teams out there, from junior to senior engineers.
We are fast-paced and provide a safe, open, and collaborative environment that encourages us to lean in, try new things and discover our potential with continuous learning for everyone.
While building the best value for our customers, you will work with a wide range of technical challenges. Such as building distributed systems that need to operate 24/7 and ultra-low latencies, solving UI/UX problems to help fraud analysts to fight fraud more efficiently. In addition, designing extensive databases from relational, NoSQL and graphs, validate and develop new data science techniques and algorithms.
You:
You are a passionate professional with the talent to push engineering excellence, challenge the status quo, and lead by example. You excel by being a catalyst for clarity, engaging key stakeholders, and driving scalable technical solutions that align with our business goals.
You have a critical mindset and the ability to mentor others, ensuring the team delivers high-quality, production-ready mobile software with minimal oversight. On a daily basis, you’ll have the chance to work on subjects such as High-Performance Mobile SDKs, Security, and Scalability.
Your Day to Day:
- Own the end-to-end delivery of robust SDKs, from architectural design to production-ready deployment, ensuring they scale predictably in high-stakes environments;
- Solve high-complexity technical challenges with significant autonomy, making the critical trade-offs between development speed and long-term software quality;
- Champion engineering excellence by mentoring peers and raising the bar for design reviews, code quality, and mobile best practices;
- Liaise with cross-functional stakeholders to translate customer needs into technical mobile solutions that maximize business impact and user experience;
You Have & You Know-how:
- BSc/MSc degree in Computer Science or a similar technical degree;
- 5+ years of experience in developing and delivering advanced mobile applications;
- Mastery of the Android ecosystem, from high-level app architecture in Kotlin and/or Java to low-level OS internals and security frameworks.
- Experience with Mobile CI/CD and Automation (e.g., Gitlab, Jenkins, or Bitrise) to ensure predictable, high-quality releases.
- Extreme Ownership mindset, proactively seeking context and driving tasks to completion with growing autonomy.
- We also value experience in the following topics:
- Designing and creating frameworks or SDKs for mobile applications;
- Native app writing ability for iOS environments (Swift/Objective-C);
- Knowledge in Cross-platform tools (Cordova, Xamarin, and Flutter) and Typescript;
- Good technical English communication skills.
The Product Team builds our product to disrupt the financial crime industry from a data-led approach. We partner with our clients using a holistic lens and have result-driven solutions to manage financial risk with a cloud-first platform and a world-class UX interface. Being part of this team, you have a voice in planning, strategizing, and challenging the status quo. Your thoughts and ideas are valued. Our fast-paced and open environment encourages us to lean in, try new things, and discover our potential. We define and act on what could be in tomorrow's world, not on what is today. Join Us!
#LI-Remote #LI-LS1
Your First 30-Days at Feedzai:
You will be immersed in our brand with training, connections, and one-on-one time with your manager. You may shadow your colleagues virtually or onsite at an office depending on where you work as you are supported through your Feedzai journey. In addition, you will have access to a ton of information to give you history, context, and all the knowledge you can handle about Feedzai and the team. Finally, you will start working on projects and collaborating on work currently being done. We can't wait to have you join the team!
Feedzai is an Equal Opportunity Employer and we value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Feedzai does not accept unsolicited resumes from recruiters or employment agencies.
Feedzai will use the personal data you provide us with by filling out this form for reviewing your application and to potentially negotiate a contract with you. Your personal data will be retained by Feedzai for 24 months following your application. Please see our Privacy Notice available at https://www.feedzai.com/legal/feedzai-candidate-privacy-policy/ and https://www.feedzai.com/legal/feedzai-california-candidates-privacy-policy/ for more information on how we process your personal data.
Ready to apply?
Apply to Feedzai
The Engineering team builds the software powering Veriff, tackling the challenges of online identity in a scalable and innovative way. We’re looking for an Android Developer to help us build a reliable, secure, and high-performing SDK that works seamlessly across a wide range of devices.
In this role, you will contribute to developing efficient and scalable solutions that integrate smoothly with partner applications, while learning and growing in a fast-paced environment.
You’ll help us protect honest people online by:
- Contribute to the development and maintenance of our Android SDK, focusing on performance, security, and usability
- Collaborate with cross-functional teams including product managers, designers, and backend engineers
- Support efforts to ensure compatibility across a variety of Android devices (low-end to high-end)
- Write clean, maintainable, and well-tested code
- Participate in code reviews and incorporate feedback to improve code quality
- Assist in debugging issues and resolving performance bottlenecks
- Stay up to date with Android development best practices and emerging technologies
- Contribute to improving development workflows, including testing and release processes
You are the right future Veriffian for the job if you have:
- Experience as an Android Developer with hands-on work in Kotlin and/or Java
- Familiarity with Android frameworks and building mobile applications or SDK features
- Basic understanding of RESTful APIs and their integration
- Experience with testing (unit or integration) and debugging
- Understanding of mobile app architecture and best practices (e.g. MVVM, clean architecture – exposure is enough)
- Strong problem-solving skills and willingness to learn
- Good communication skills and ability to work in a team environment
You’re an especially awesome match if you have:
- Exposure to Agile environments (Scrum/Kanban)
- Knowledge of CI/CD pipelines
- Experience with performance optimisation or working across different Android devices
- Any exposure to cross-platform tools (e.g., React Native or Flutter)
- Awareness of accessibility and inclusive design principles
- Flexibility to work from home
- Stock options that ensure your share in our success
- Extra recharge days on top of your annual vacation
- Comprehensive relocation support to Estonia or Spain
- Extensive medical, dental, and vision insurance to ensure you’re feeling great physically and mentally
- Learning and Development & Health and Sports budget that you are free to tailor to your own needs
- Four weeks of fully paid sabbatical leave after reaching your 5th work anniversary
Ready to apply?
Apply to Veriff
The Engineering team builds the software powering Veriff, tackling the challenges of online identity in a scalable and innovative way. We’re looking for a Senior Android Engineer to help us build a reliable, secure, and high-performing SDK that works seamlessly across a wide range of devices.
We're seeking an experienced Senior Android Developer to address the pressing challenges of creating an SDK that is exceptionally reliable, secure, and performant across a broad range of devices. Our diverse clientele and expanding user base demand an SDK that excels not only on high-end devices but also on low-end devices, ensuring a seamless user experience. This role is essential in developing a lean, efficient, and scalable solution that can be effortlessly integrated with various partner applications. Your expertise will be vital in tackling the complexities of optimizing performance, enhancing security, and maintaining compatibility, helping Veriff stay at the forefront of the digital identity verification landscape.
You’ll help us protect honest people online by:
- Designing, developing, and maintaining our Android SDK, ensuring optimal performance, security, and usability
- Collaborating closely with cross-functional teams, including product managers, designers, and backend developers
- Addressing the challenges of compatibility and performance across a wide range of devices, from low-end to high-end models
- Implementing continuous integration and deployment (CI/CD) processes to streamline development, testing, and release cycles
- Conducting code reviews, and providing constructive feedback to foster a culture of learning and continuous improvement
- Staying current with industry trends and emerging technologies, integrating best practices and innovative solutions into our SDK
- Proactively identifying and resolving potential bottlenecks to ensure the highest levels of reliability and stability
- Contributing to the strategic direction of our Android development efforts, driving innovation and helping shape the future of Veriff's products and services
You are the right future Veriffian for the job if you have:
- Proven experience as a Senior Android Developer, with a strong track record in developing and maintaining high-quality Android SDKs or applications
- Expertise in Android frameworks, Kotlin, and Java, as well as familiarity with RESTful APIs and their integration into Android applications
- Experience with Android testing frameworks, tools and processes, including unit, integration and performance tests
- Solid understanding of mobile application architecture, design patterns, and best practices, with experience in optimising performance across various devices
- Excellent problem-solving abilities, communication skills, and a collaborative mindset that fosters effective teamwork and continuous improvement
You’re an especially awesome match if you have:
- Familiarity with Agile methodologies, Scrum, or Kanban, and their application in a fast-paced development environment
- Knowledge of Continuous Integration and Continuous Deployment (CI/CD) processes and tools
- Experience with other mobile development platforms, such as iOS or cross-platform frameworks like React Native or Flutter, broadening our team's expertise and versatility
- Mobile application accessibility and inclusive design practices, ensuring our SDK caters to a diverse user base
- Flexibility to work from home
- Stock options that ensure your share in our success
- Extra recharge days on top of your annual vacation
- Comprehensive relocation support to Estonia or Spain
- Extensive medical, dental, and vision insurance to ensure you’re feeling great physically and mentally
- Learning and Development & Health and Sports budget that you are free to tailor to your own needs
- Four weeks of fully paid sabbatical leave after reaching your 5th work anniversary
Ready to apply?
Apply to Veriff
Founding Software Engineer - Agentic Systems
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At Veriff, we are exploring the next frontier of identity verification: agentic AI systems that can reason, act, and operate safely in high-trust environments.
We are forming a small, high-leverage team to explore and productionize agentic capabilities across identity, KYA, risk assessment, and automation workflows.
We are looking for a Founding Engineer to help build this from the ground up.
You’ll help us protect honest people online by:
- Design and build agentic systems that can:
- Use tools;
- Reason across multi-step workflows;
- Operate under strict compliance and safety constraints.
- Prototype and productionize LLM-powered workflows;
- Build internal evaluation frameworks for agent reliability;
- Define system architecture for scalable, secure AI services;
- Work closely with product, risk, and compliance teams;
- Turn ambiguous ideas into working systems.
You are the right future Veriffian for the job if you have:
Strong Systems Engineer
- 6+ years building backend systems in production
- Strong Python experience (FastAPI or similar)
- Experience with distributed systems and async workflows
- Deep understanding of system design and reliability
Agentic / LLM Experience
Hands on experience building:
- Tool using agents
- Multi step reasoning workflows
- Retrieval Augmented systems (RAG)
- Multi agent or orchestration systems
Experience with one or more:
- LangChain / LangGraph
- OpenAI Assistants or Responses API
- AutoGen
- CrewAI
- Semantic Kernel
You have shipped LLM-powered systems beyond experimentation.
Elements of Our Tech Stack
- Backend: Node.js (TypeScript), Python, Golang
- Frontend: React (TypeScript)
- Mobile: Kotlin (Android), Swift (iOS), Dart (Flutter), TypeScript (React Native)
- Infrastructure: AWS, Kubernetes, Terraform
- Data & ML: PostgreSQL, RabbitMQ, Python-based ML models
Nice to have:
- Experience in fraud, risk, compliance, or identity systems
- Experience building internal AI evaluation pipelines
- Familiarity with vector databases (pgvector, Pinecone, etc)
- Experience operating in regulated environments
What Success Looks Like
- Reliable agentic workflows running in production
- Clear evaluation metrics for AI quality and safety
- Strong architectural foundations for scaling AI capabilities
- High quality technical documentation and system clarity
- Flexibility to work from home
- Stock options that ensure your share in our success
- Extra recharge days on top of your annual vacation
- Comprehensive relocation support to Estonia or Spain
- Extensive medical, dental, and vision insurance to ensure you’re feeling great physically and mentally
- Learning and Development & Health and Sports budget that you are free to tailor to your own needs
- Four weeks of fully paid sabbatical leave after reaching your 5th work anniversary
#LI-FS1#SPB1SPNTAL #LI-Remote
Ready to apply?
Apply to Veriff
Senior Software Engineer (Product Platform)
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At Veriff, we verify identities at scale, helping businesses connect with honest people online. Our software verifies over 10,000 government-issued documents from more than 190 countries, and this is growing fast! These are millions of verified identities a year and countless people working behind the scenes to help make the lives of millions—and eventually billions—of people safer online. We are a force for good, and we want to be the standard for trust online.
As a Senior Software Engineer, you will do more than write code—you will help architect scalable systems, mentor engineers, and drive business impact. We are looking for problem solvers like you to ensure this happens.
The Platform Area supports cross-domain business needs and processes through a common platform infrastructure. The development and evolution of the Veriff Platform are critical to our success. Our platform allows us to quickly adapt our technology to meet the rapidly evolving identity verification market needs and the strong appetite of our teams and customers to use innovative solutions to identify their customers and keep their communities safe. The Veriff platform is a technical area with lots of business and scalability challenges that are key to Veriff’s continuous success.
You’ll help us protect honest people online by:
- Build & Scale: Design high-performance, maintainable, and secure systems that handle millions of verifications.
- Lead & Mentor: Set the bar for technical excellence, sharing knowledge and guiding engineers.
- Innovate & Optimize: Improve automation, scalability, and reliability.
- Own & Deliver: Take responsibility for end-to-end development in collaboration with product and design.
- Solve with a Holistic Mindset: Apply curiosity, adaptability, and multi-skill problem-solving to technical challenges.
You are the right future Veriffian for the job if you have:
- Over 5 years of experience building large-scale applications
- Long-term experience in NodeJS using TypeScript
- Ownership experience of a specific component, feature, or system
- A proven track record in developing, debugging, and shipping software products on large code bases
- A Bachelor's degree in Computer Science, Computer Engineering, or a relevant technical field
- The ability to inspire growth within teams by setting new standards
If you're passionate about coding, problem-solving, and contributing to Veriff's mission, we want to hear from you! Be part of a team that values innovation, collaboration, and excellence.
Elements of Our Tech Stack
- Backend: Node.js (TypeScript), Python, Golang
- Frontend: React (TypeScript)
- Mobile: Kotlin (Android), Swift (iOS), Dart (Flutter), TypeScript (React Native)
- Infrastructure: AWS, Kubernetes, Terraform
- Data & ML: PostgreSQL, RabbitMQ, Python-based ML models
- Flexibility to work from home
- Stock options that ensure your share in our success
- Extra recharge days on top of your annual vacation
- Comprehensive relocation support to Estonia or Spain
- Extensive medical, dental, and vision insurance to ensure you’re feeling great physically and mentally
- Learning and Development & Health and Sports budget that you are free to tailor to your own needs
- Four weeks of fully paid sabbatical leave after reaching your 5th work anniversary
#LI-FS1#SPB1SPNTAL #LI-Remote
Ready to apply?
Apply to Veriff