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For Companies Rate: £400–£600 per day (Outside IR35)
Duration: 6 months initially (extensions likely)
Location: Remote first with occasional visits to central London office (no more than 1 or 2 times per month for workshops)
We are working with a Series A startup that recently secured a £20m round. They are looking for 2 x exceptional Flutter Engineers to join a high-impact, greenfield project. This is an opportunity to build an enterprise-grade, cross-platform application from the ground up — with a strong emphasis on security, performance, and reliability.
What You’ll Do
- Architect and implement high-quality, modular Flutter components for a real-time coordination platform.
- Drive best practices in testing, CI/CD, and automated release processes.
- Collaborate with backend engineers to integrate secure APIs and encrypted data flows.
- Apply advanced concepts in application security, encryption, and authentication.
- Contribute to defining a scalable, test-driven frontend architecture used across multiple device types.
What You’ll Bring
- 4+ years of professional Flutter experience (7+ in mobile engineering overall).
- Proven delivery of production-grade apps at scale.
- Strong grasp of application security, cryptography, and secure data handling.
- Hands-on experience with OIDC / OAuth2 authentication.
- Deep knowledge of Flutter testing frameworks, CI/CD, and modern state management (e.g. BLoC, Signals, Riverpod).
- Excellent communication and collaboration skills in remote/distributed teams.
Bonus Points
- Experience with secure messaging, E2EE, or federated communication systems.
- Knowledge of the Matrix protocol or similar frameworks.
- Familiarity with Flutter FFI or writing SDKs/libraries.
This is a contract for engineers who thrive on solving hard problems — where security, design excellence, and real-world impact all meet.
At Pixelated People, we don’t just do inclusion and diversity. We embrace people that have different opinions, perspectives and personalities. Because we believe that by seeing the world from all sorts of angles, we can make life better for all the people who live in it. So we want you to know that the things that make you, you — like your age, ability, background and identity — are things that we celebrate and support.
Contact Detail:
Pixelated People Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land 📱 Senior Flutter Engineer - 6M Contract - Outside IR35
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech world, especially those who might know about opportunities at startups. A personal recommendation can make all the difference when you're aiming for that Senior Flutter Engineer role.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best Flutter projects. Make sure to highlight any work related to security and performance, as these are key for the role. We love seeing what you can do!
✨Tip Number 3
Prepare for the interview by brushing up on your knowledge of application security and CI/CD practices. Be ready to discuss how you've implemented these in past projects. We want to see your expertise shine through!
✨Tip Number 4
Apply through our website! It’s the easiest way to get your application noticed. Plus, we’re always on the lookout for talented engineers like you to join exciting projects. Don’t miss out!
We think you need these skills to ace 📱 Senior Flutter Engineer - 6M Contract - Outside IR35
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Flutter Engineer role. Highlight your 4+ years of Flutter experience and any production-grade apps you've delivered. We want to see how your skills align with what we're looking for!
Showcase Your Projects: Include links to your previous projects or GitHub repositories. This gives us a chance to see your work in action, especially if you've tackled security, performance, or reliability in your apps. We love seeing real examples of your expertise!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share why you're excited about this opportunity and how you can contribute to our greenfield project. We appreciate a personal touch that shows your enthusiasm for the role.
Apply Through Our Website: Don't forget to apply through our website! It streamlines the process for us and ensures your application gets the attention it deserves. We can't wait to hear from you!
How to prepare for a job interview at Pixelated People
✨Know Your Flutter Inside Out
Make sure you brush up on your Flutter knowledge before the interview. Be ready to discuss your experience with building production-grade apps, especially focusing on security and performance. Prepare examples of how you've implemented modular components and tackled challenges in your previous projects.
✨Showcase Your Collaboration Skills
Since this role involves working closely with backend engineers, be prepared to talk about your experience in collaborative environments. Share specific instances where you successfully integrated APIs or worked on cross-functional teams, highlighting your communication skills and ability to thrive in remote settings.
✨Demonstrate Your Testing Know-How
Familiarise yourself with Flutter testing frameworks and CI/CD processes. Be ready to explain how you've driven best practices in testing and automated release processes in your past roles. This will show that you understand the importance of quality assurance in delivering secure applications.
✨Prepare for Technical Questions
Expect technical questions around application security, cryptography, and authentication methods like OIDC/OAuth2. Brush up on these topics and think of real-world scenarios where you've applied these concepts. This will help you stand out as a candidate who not only knows the theory but has practical experience too.
