At a Glance
- Tasks: Develop AI-driven digital banking solutions and enhance user experiences with cutting-edge technology.
- Company: Join a remote-first company revolutionising digital finance with innovative AI products.
- Benefits: Competitive salary, full-time remote work, and opportunities for professional growth.
- Other info: Collaborative environment with a focus on craftsmanship and continuous learning.
- Why this job: Shape the future of fintech while working with a passionate, high-impact engineering team.
- Qualifications: 10+ years in software engineering, expertise in React Native, and a passion for innovation.
The predicted salary is between 63000 - 77000 £ per year.
- Join to apply for the
- Senior Software Engineer / Staff Engineer / Architect role at
- Mission. dev
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Base pay range
Agreement type
This is a full-time employment role, requiring 40 hours per week, directly hired by the client.
Location of the engineer
Remote 100%.
About the client
The client is a company developing the next generation of digital financial products.
Their mission is to build scalable, secure, and highly customizable banking solutions that merge traditional fintech capabilities with cutting-edge AI innovations.
Their multidisciplinary teams—spanning engineering, design, and machine intelligence—deliver platforms that make financial operations smarter, faster, and more transparent.
They value craftsmanship, autonomy, and curiosity, qualities that enable them to move quickly while maintaining precision.
With a global presence and a remote-first culture, the client brings together specialists from finance, blockchain, and artificial intelligence to push the boundaries of what’s possible in digital money and data systems.
About the role
We are looking for a senior Fullstack Software Engineer to help build the foundation of our AI-driven digital banking platform.
This role combines deep technical ownership with product craftsmanship.
You will design and implement features that connect modern frontend interfaces with secure, scalable serverless backends, enabling real-time, data-intelligent financial interactions.
You’ll work across the full product stack, collaborating with design, data, and AI teams to deliver polished user experiences backed by robust cloud infrastructure.
This is an opportunity to join a small, high-impact engineering team where your work directly shapes how people interact with intelligent financial tools.
- What You’ll Do
- Develop and ship production-grade mobile and web interfaces using React Native with Expo, ensuring design precision and smooth performance.
- Take ownership of core fintech product modules such as digital wallets, payments, transaction ledgers, onboarding, and notification systems.
- Design and maintain scalable APIs and data pipelines within a serverless AWS environment (Lambda, API Gateway, Dynamo DB, Kinesis, Event Bridge).
- Integrate digital asset and stable-value payment flows while maintaining high standards for compliance and data protection.
- Build real-time, event-driven user experiences using Web Sockets and server-streaming connections, including conversational and AI-assisted features.
- Enhance app performance and reliability using profiling and monitoring tools like Sentry and Better Stack, along with libraries such as Hermes, Reanimated, and Flash List.
- Partner with design teams to translate Figma prototypes and design tokens into consistent UI implementations.
- Apply AI-supported development workflows (e. g., using Cursor, Claude, or related assistants) to accelerate delivery and improve testing coverage.
- Contribute to team-wide standards for AI-assisted development, evaluating new tools that enhance velocity and quality.
- Provide technical guidance and mentorship to peers, promoting best practices for building secure, performant, AI-integrated fintech systems.
What You Bring
- 10+ years of professional software engineering experience, including 5+ years in mobile-first or fintech applications.
- Proven experience delivering complex, secure, and high-quality financial software in production environments.
- Deep expertise with React Native + Expo and modern Type Script development across frontend and backend layers.
- Strong background in serverless architectures and AWS cloud services.
- Understanding of secure identity management (JWT, Cognito, or comparable systems) and financial-grade data security practices.
- Familiarity with stablecoin payment mechanisms, blockchain integrations, or payment APIs.
- Practical knowledge of real-time networking technologies (Web Sockets, SSE).
- Experience using AI-enhanced IDEs or developer tools in daily workflows.
- A mindset geared toward innovation and experimentation, especially around how AI changes the software development process.
- Preferred Experience
- Understanding of blockchain-based transactions or tokenized payments.
- Familiarity with design systems, performance optimization, and testing automation.
- Experience mentoring engineers or leading small, cross-functional development teams.
- Senior Software Engineer / Staff Engineer / Architect - Summary
- #J-18808-Ljbffr
Senior Software Engineer / Staff Engineer / Architect employer: Mission.dev
At Mission.dev, we pride ourselves on being an exceptional employer that champions innovation and collaboration in a fully remote environment. Our commitment to employee growth is reflected in our supportive culture, where autonomy and curiosity are not just encouraged but celebrated, allowing you to thrive while working on cutting-edge AI-driven financial products. With competitive compensation and the opportunity to shape the future of digital banking, joining our high-impact engineering team means being part of a mission that truly makes a difference in how people interact with money.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer / Staff Engineer / Architect
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Mission.dev or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Mission.dev.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Mission.dev.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Mission.dev that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Software Engineer / Staff Engineer / Architect
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Mission.dev.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Mission.dev and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Mission.dev
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Mission.dev uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
