Join to apply for the Senior Software Engineer role at TaxTechJoin to apply for the Senior Software Engineer role at TaxTechGet AI-powered advice on this job and more exclusive features.Join us to reshape tax technology from the ground up - we’re building a platform for fintechs, banks, and tax advisors to easily launch tax tools. Backed by top investors, we’re hiring a Senior Backend Engineer to help build our core systems.If you are a passionate engineer who thrives on innovation and dreams of disrupting a traditional industry with technology, then join us to revolutionize the way everyone does their taxes!The OpportunityYou’ll shape the platform’s architecture, influence key product decisions, and build the backbone of a tax infrastructure used by financial institutions across Europe.You'll build a platform that enabling fintechs to offer and create their own tax tools - by smart integration with us.Join us to reshape tax technology from the ground up - we’re building a platform for fintechs, banks, and tax advisors to easily launch tax tools. Backed by top investors, we’re hiring a Senior Backend Engineer to help build our core systems.If you are a passionate engineer who thrives on innovation and dreams of disrupting a traditional industry with technology, then join us to revolutionize the way everyone does their taxes!The OpportunityYou’ll shape the platform’s architecture, influence key product decisions, and build the backbone of a tax infrastructure used by financial institutions across Europe.You'll build a platform that enabling fintechs to offer and create their own tax tools - by smart integration with us.TasksYour ResponsibilitiesDesign and implement scalable, high-performance architecture for distributed and high-load backend systems.Make key architectural decisions and drive technical strategy to ensure robustness, reliability, and maintainability under load.Take ownership of designing and implementing core backend systems from scratch - shaping the foundation of our emerging platform.Work closely with the CTO to bring the product roadmap to life, turning vision into scalable and maintainable architecture.Ship new features at high velocity without compromising code quality, reliability, or performance.Play a key role in fostering a high-performing, collaborative engineering culture as we scale the team.RequirementsExperience We’re Looking ForStrong technical background with 7+ years of full-time engineering experience, preferably across the following tech stack: Backend Development: Typescript (Nest.js) and Java/Kotlin - solid experience and designing scalable RESTful or GraphQL APIs. Strong knowledge of authentication (JWT, OAuth2) and event-driven architectures (Kafka, WebSockets). Database Management: Expertise in PostgreSQL, schema design, query optimization, and ORMs like Prisma.️ Cloud Infrastructure: Experience with Google Cloud Platform (Cloud Run, Functions), CI/CD pipelines (GitHub Actions), Docker, and Kubernetes.Who We're Looking ForThis role is ideal for a seasoned engineer eager to join a well-funded company at its early stages where most of the product is still to be built. You’ll be a strong match if:You excel in autonomy, taking ownership of the details, and have a strong ability and drive to manage your own projects and work from start to finishYou prefer focused building and coding time over meetings and love being productive, and delivering valueYou’re excited to be part of a high-performing team, surrounded by talented peers who will challenge you to grow and are ready to tackle the ambitious road aheadBonus points Knowledge of one or more programming languages such as Go or Python️ Good understanding or experience with microservice architecture, as well as experience with high-loaded systems Experience in fintech projects or startups. Experience in building products in regulated industries like payroll, fintech, or tax or had projects where you build a tax solution Experience in building SDK/white-label software products???? Big plus: Knowledge in React, Next.js or other frontend technologies. Familiarity with state management libraries (Redux, Zustand), modern styling (TailwindCSS, Styled Components) and other major Frontend technologiesWe value hustle and heart. If you have the technical chops and an entrepreneurial spirit, we want to hear from you, even if your experience isn't a perfect match.Let's disrupt the tax industry together.Seniority levelSeniority levelAssociateEmployment typeEmployment typeFull-timeJob functionJob functionInformation TechnologyIndustriesIT Services and IT ConsultingReferrals increase your chances of interviewing at TaxTech by 2xGet notified about new Senior Software Engineer jobs in Berlin, Berlin, Germany.Principal Software Engineer - Logistics Engineering (all genders)Commerce B2B Software Engineer & Team Lead (m/f/x)Senior Software Engineer (iOS/React) - Size & Fit (all genders)Senior IT-Consultant / Software Quality Engineer (m/w/d) in BerlinSenior Process Development Engineer for Fiber Optics Connectivity Solutions (m/f/d)Engineering Team Lead - React Native (all genders)Senior Softwareentwickler – UI5 / Fiori (w/m/d)(Senior) Developer - Fokus Tax Technology (m/w/d)(Senior) Softwareentwickler Mobile (m/w/d)Senior Business Developer (w/m/d) Bau- und ImmobilienmanagementSenior Business Developer, Enterprise Business Development, Amazon Freight EUSenior Business Developer, Enterprise Business Development, Amazon Freight EUSenior Business Developer (w/m/d) Bau- und ImmobilenmanagementSenior Software Engineer – C# / .NET (m/f/d)(Mid/Senior) Data Software Engineer (f/m/d)Senior Software Engineer - Java & PHP (m/f/d)Lead/Senior Frontend Software Engineer (m/f/x)We’re unlocking community knowledge in a new way. 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