About InvestEngineWe’re a London-based fintech on a mission to make ETF investing simple and accessible. Over 150,000 clients have trusted us with over £3 billion in assets — and we’re just getting started.We’ve been featured by MoneyWeek, Finder and Forbes, and we’re growing fast with big ambitions.About the RoleWe’re looking for a Senior Backend Engineer to join our Payments Team and help us strengthen and scale a business-critical part of our platform.You’ll work on complex backend challenges across payment flows, integrations and system reliability. You’ll contribute to architecture, improve system stability and scalability, and help evolve the technical foundations of our Payments domain.You’ll collaborate closely with Engineering, Product, Compliance, Operations and other business teams to build reliable solutions and improve critical operational processes.What You’ll DoDesign, develop and maintain backend services in Python 3.11 using Django / DRFContribute to the architecture and long-term technical development of our Payments systemsBuild and improve RESTful APIs and integrationsWork with complex backend and legacy systems and identify root causes of technical problemsContinuously improve system performance, reliability and scalabilityInvestigate and resolve production issues and recurring problemsWork with MySQL and RedisParticipate in architectural discussions and contribute to technical decisionsIdentify and reduce technical debtImprove development processes, code quality and engineering practicesCollaborate with Product, Compliance, Operations and Business teamsContribute to the evolution of our architecture and internal engineering toolsWhat We’re Looking For4+ years of experience in backend developmentStrong Python skills and deep knowledge of Django or similar frameworksSolid understanding of relational databases, caching and high-performance backend systemsExperience with REST APIs, service design and distributed systemsExperience working with complex or legacy systemsAbility to independently investigate complex technical problems and identify root causesExperience working with production systems and improving their stabilityStrong ownership and ability to make sound technical decisionsFamiliarity with Git, CI/CD practices and modern engineering workflowsStrong communication and problem-solving skillsEnglish B2+ and fluent RussianNice to HaveExperience working in fintech, payments or another regulated industryFamiliarity with AWS and DockerExperience with RabbitMQ, Kafka or other message brokersExperience with payment providers or financial integrationsContributions to open source or personal side projectsHow We WorkWe’re a lean, collaborative team where engineers have a real influence on architecture, technical decisions and engineering culture.We value ownership, curiosity and continuous improvement. You’ll have the autonomy to make technical decisions and work on meaningful, business-critical systems without micromanagement or unnecessary bureaucracy.Within the Payments team, you’ll help build systems that remain stable, reliable and scalable as the business grows.What We OfferImpact from day one — work on business-critical Payments systemsTechnical growth — influence architecture and technical decisionsHands-on engineering — solve complex backend challenges across production systemsModern tech stack — Python 3.11, Django, MySQL, Redis, AWS, GitHub, TeamCityRemote-first and flexible — work from anywhere, at your own paceUnlimited vacation — take time off when you need it, no fixed limitsSupportive team — thoughtful, skilled colleagues who care about quality and resultsHiring ProcessIntro call with our Talent teamTechnical interview with the Backend teamGamified cognitive assessment to understand how you think and problem-solveFinal conversation with our CTOAbout InvestEngineInvestEngine is an award‑winning, industry‑leading investment platform that champions the use of exchange‑traded funds (ETFs).We are a team of industry experts with a passion for building great investment products. A powerful investment solution, we think everyone could benefit from using ETFs as a part of their financial strategy.