We are looking for a talented and experienced Full Stack Software Engineer to join our Client’s team — a boutique software consultancy based in London, focused on building modern, high-performance SaaS products for startup founders and entrepreneurs. We work in small, high-trust teams to rapidly deliver well-architected solutions with real impact. We prioritize thoughtful planning, clean code, and meaningful collaboration with clients.
Project — development of scalable SaaS products from scratch, aimed at startup founders and early-stage companies. You will collaborate directly with the founder and clients on building backend services, modern user interfaces, and integrating AI tools to enhance engineering velocity and product quality. Must have: * Strong proficiency in Python (FastAPI). * Experience with React/Next.js and TypeScript. * Solid understanding of system design, software architecture, and clean coding principles. * Experience working in lean, agile, or high-trust teams. * Familiarity with Git, CI/CD workflows, and cloud environments (AWS, Azure, etc.). * Familiarity with startup workflows and agile development practices. * Experience using AI tools to augment development processes (preferred). * Upper-Intermediate English or higher. Good to have: * Knowledge of C# .NET. Responsibilities: * Collaborate with a technical team and clients to plan, design, and deliver scalable software systems. * Build backend services using Python (FastAPI). * Create modern frontend interfaces using React, Next.js, and TypeScript. * Contribute to architectural decisions and system design discussions. * Integrate AI tools or workflows to boost engineering velocity and code quality. * Participate in project planning, sprint estimation, and regular code reviews. * Maintain clean, testable code with clear documentation. We offer: * Competitive salary with the regular review. * Medical Insurance after 3 months probation period (can be used in Ukraine). * Vacation (up to 20 working days). * Paid sick leaves (10 working days). * National Holidays as paid time off (11 days). * Online English courses. * Accountant assistance and legal support. * Flexible working schedule: remote, office-based or hybrid format. * Fully-equipped perfect office space located in the city center (ready for work in blackouts). * Direct cooperation with the customer. * Dynamic environment with low level of bureaucracy and great team spirit. * Challenging projects in diverse business domains and a variety of tech stacks. * Communication with Top/Senior level specialists to strengthen your hard skills. * Online/offline teambuildings. * Volunteering culture development and support.
