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# Senior Backend Engineer (Python)

- **Company:** Investengine
- **Location:** Valencia, Spain
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Software Quality, Databases, Continuous Integration, Relational Databases, Distributed Systems, Django Web Framework, Python (Programming Language), Message Broker, MySQL, Open Source Technology, RabbitMQ, Redis, Service Design, Caching, Reliability of Systems, Technical Debt, Backend, Git, Apache Kafka, Build Tools, Restful APIs, Docker, Legacy Systems
- **Published:** October 15, 2026
- **Apply:** https://www.buscojobs.com.es/senior-backend-engineer-python-en-valencia-ID-376365088

## About the Role

4+ years of experience in backend development
Strong Python skills and deep knowledge of
Django
or similar frameworks
Solid understanding of
relational databases, caching and high-performance backend systems
Experience with
REST APIs, service design and distributed systems
Experience working with complex or legacy systems
Ability to independently investigate complex technical problems and identify root causes
Experience working with production systems and improving their stability
Strong ownership and ability to make sound technical decisions
Familiarity with Git, CI/CD practices and modern engineering workflows
Strong communication and problem-solving skills
English B2+
and fluent Russian
Nice to Have
Experience working in
fintech, payments or another regulated industry
Familiarity with
AWS and Docker
Experience with
RabbitMQ, Kafka
or other message brokers
Experience with payment providers or financial integrations
Contributions to open source or personal side projects

## Description

We'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 byMoneyWeek,FinderandForbes, and we're growing fast with big ambitions.About the RoleWe're looking for aSenior Backend Engineerto join ourPayments Teamand 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 inPython 3.11 using Django / DRFContribute to the architecture and long-term technical development of our Payments systemsBuild and improveRESTful APIsand 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 withMySQLandRedisParticipate 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 ofDjangoor similar frameworksSolid understanding ofrelational databases, caching and high-performance backend systemsExperience withREST 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 infintech, payments or another regulated industryFamiliarity withAWS and DockerExperience withRabbitMQ, Kafkaor 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 valueownership, 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 remainstable, 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 systemsRemote-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-solve#J-*****-Ljbffr