(Senior) Software Engineer - Backend (d/f/m)

Steuerbot

DAS IST STEUERBOT 🤖 Steuerbot ist ein innovatives Start-up aus Stuttgart (Fellbach). Unsere Mission: Allen Menschen eine Steuererklärung auf dem Niveau eines Steuerberaters ermöglichen – einfach, schnell und verständlich. Dazu führt Steuerbot den Nutzer im Chat mit persönlichen, leicht verständlichen und individuell angepassten Fragen auf dem optimalen Weg zu seiner Steuererklärung. Mit unserer Steuer-App kämpfen wir dafür, dass wirklich jeder das Maximum aus seiner Steuererklärung herausholt – unabhängig von Gehalt und Lebenssituation! 💪 DAS SIND WIR 👫 Bei uns geht es darum, kreative Ideen umzusetzen und unsere Vision Wirklichkeit werden zu lassen. Wir verstecken uns nicht hinter ausgefallenen Berufsbezeichnungen oder bürokratischen Prozessen – stattdessen behandeln wir alle im Team gleich, fair und mit jeder Menge Freiheit, um gemeinsam etwas Großartiges zu schaffen. Jeder macht Fehler, wir auch! Wir lernen aus ihnen und treffen unsere Entscheidungen immer mit Daten, Logik 📈 und gesundem Menschenverstand 🧠 Seit fast 10 Jahren zählt Steuerbot zu den bestbewerteten Steuer-Apps in Deutschland – mit 4,8 Sternen bei über 120.000 Bewertungen 🤩 Seit zwei Jahren bieten wir gemeinsam mit Taxfix ein breites Spektrum an Steuerlösungen an, die wir mit dir in die Hände von Millionen Steuerzahlern bringen wollen. DEINE AUFGABEN 👩‍💻 Als Fullstack-Entwickler:in wirst du Teil eines geteilten Teams zwischen Steuerbot und Taxfix. Du hilfst uns, die einzigartige Technologie weiterzuentwickeln, die das Wachstum von Steuerbot und Taxfix ermöglicht und beschleunigt. Du wirst: * Die Weiterentwicklung unserer internen Services und Tools übernehmen. * Den Aufbau einer skalierbaren, zukunftsorientierten Architektur und Infrastruktur wesentlich mitgestalten. * Bestehende Ansätze in den Bereichen CI/CD und Testautomatisierung weiter ausbauen. * Eng mit unserem Produkt- und Frontend-Team zusammenarbeiten, um neue Funktionen zu entwerfen und umzusetzen. * AI-gestützte Entwicklung aktiv mitgestalten – ob beim Einsatz von LLMs zur Code-Generierung, bei der Integration von AI-Features in unsere Produkte oder beim Erforschen neuer Möglichkeiten, wie AI unsere Entwicklungsprozesse beschleunigt. * Von Anfang an bei der Entwicklung ganz neuer Features oder Produkte dabei sein und einen großen Beitrag leisten. * Dich mit spannenden Themen wie maschinelles Lernen, generative AI, LLM-Integration oder Data Engineering auseinandersetzen – wir geben dir die Zeit, dich in neue Themengebiete einzuarbeiten! DAS BESCHREIBT DICH 🙋‍♂️ * Du hast sehr gute Kenntnisse in mindestens einer objektorientierten oder funktionalen Programmiersprache (Java, Kotlin, JavaScript/TypeScript, Scala, Python) – idealerweise Kenntnisse in Typescript. * Du hast Spaß am Schreiben von performantem und wartbarem Code. * Du bringst Erfahrung im Entwurf und der Implementierung komplexer Systeme mit. * Du hast großes Interesse daran, in ganz neue Themen einzusteigen und dich kontinuierlich weiterzuentwickeln. * Du bist fit im Umgang mit modernem AI-Tooling (z. B. Claude Code, GitHub Copilot, Cursor, LLM-APIs) und verfolgst aktiv, was sich in diesem Bereich tut – du hältst dich gerne auf dem neuesten Stand und integrierst sinnvolle Tools proaktiv in deinen Workflow. * Du hast Lust, ein wichtiges Teammitglied zu werden, und freust dich auf die Arbeit in einem kleinen, sehr effizienten Team. DAS BIETEN WIR DIR 🎁 * Löse ein Problem, das jeder kennt – auch deine Familie und Freunde! * Direkter Einfluss auf den Erfolg und die Zufriedenheit von über 500.000 begeisterten Nutzer:innen. * Modernes Büro: Tischtennisplatte, ergonomische Stühle, beschreibbare Wände, … * Flexible Arbeitszeiten + hybrides Arbeitsmodell 🏡 * Top Ausstattung (Apple/Mac-Hardware) 💻 * Verpflegung im Büro – von Kaffee bis Snacks ☕️ * Ein kleines, familiäres Team bei Steuerbot 👪 + ein großes, tolles Team bei Taxfix in Berlin * Gemeinsame Aktivitäten im Team 🎳🏃🍻 * Die legendären Steuerbot-Birkenstock-Büro-Hausschuhe 👡 Es ist immer eine aufregende Zeit bei Steuerbot – wir haben viele großartige Ideen und spannende Herausforderungen, an denen wir gerne mit dir arbeiten möchten. Wir hoffen, du kannst dir vorstellen, ein Teil unseres Teams und unserer Geschichte zu werden! 🚀 SO BEWIRBST DU DICH Wir sind pragmatisch – kein umständliches Anschreiben! Schick uns deinen Lebenslauf zusammen mit einer kurzen, formlosen Antwort auf diese zwei Fragen: 1. Warum reizt dich gerade Steuerbot? 2. Was erwartest du von deiner Position bei Steuerbot?

Taxfix

OUR STORY: Every year millions of people are either filing their taxes in fear or giving up on their tax refund altogether. We're working on fixing that. Our intuitive app enables anyone, regardless of education or background, to file their taxes with newfound confidence. Spread across Germany, Spain and the UK, the team at Taxfix Group with its brands Taxfix and Steuerbot, is a compassionate group of solution-finders. We speak our minds openly, and with over 400 professionals, including tax experts, developers, and IT security experts, we're rich in ideas and voices. The group has facilitated more than 3.5 billion euros in tax refunds for its customers since its founding in 2016. YOUR CHALLENGE As a (Senior) Software Engineer on the TaxCore team, you'll be part of a shared engineering team that serves both Taxfix and Steuerbot - one team, two brands, multiple products. Based in Berlin or Stuttgart with a flexible hybrid setup, you’ll build and evolve the core shared services that power core experiences across both brands. In close collaboration with other teams, you'll design scalable backend systems and help shape technical direction as part of a small, high-ownership team that moves fast without cutting corners. This is a role for someone who loves building things that matter - and who takes genuine pride in the craft of doing it well. YOUR RESPONSIBILITIES * Build, maintain, and continuously improve core shared services and internal tools that power stable, intuitive user experiences for both Taxfix and Steuerbot. * Design and implement scalable, reliable backend systems and architecture that enable core functionality across Taxfix and Steuerbot. * Collaborate across teams to design, ship new features and share capabilities, working pragmatically beyond the boundaries of your immediate team. * Contribute to shaping the long-term technical direction of core backend services, bringing both depth of expertise and a pragmatic, outcome-focused mindset. * Contribute across the team’s stack, including occasional frontend work on internal tooling. * Take ownership, remove blockers, and help the team stay focused on what matters most. YOUR PROFILE * You bring strong backend engineering experience and a proven track record of building and evolving complex, scalable systems in production environments. * You are highly proficient in at least one modern programming language, and experience with Go is strongly preferred. * You have solid experience with modern software architecture concepts, including API design, databases, and cloud-based systems - and hands-on experience integrating a diverse range of third-party and internal APIs. * You are comfortable with containerization and DevOps concepts, with practical experience using tools like Kubernetes. * You care deeply about code quality - writing performant, maintainable, and elegant code is something you take genuine pride in, and you have a natural affinity for the full stack of what it takes to ship great software. * You are familiar with AI-assisted development tools like Claude Code, and understand how to use them thoughtfully to support better, faster engineering. * You’re a pragmatic, hands-on builder: someone who cuts through complexity and enjoys turning ideas into well-crafted solutions. * You’re collaborative, direct, and outcome-oriented, and thrive in cross-functional environments where people work closely together to solve problems. * German language skills are a plus, as this team works closely with Germany-specific tax logic. WHY TAXFIX?  * A chance to do meaningful, people-centric work with an international team of passionate professionals. * Holistic well-being with free mental health coaching sessions and yoga. * A monthly allowance to spend on an extensive range of services that you can use and roll over as flexibly as you like. * Employee stock options for all employees—because everyone deserves to benefit from the success they help to create. * 30 annual vacation days and flexible working hours. * A generous learning budget to support your personal and professional development and guidance from our internal L&D experts. * Work from abroad for up to six weeks every year. Just align with your team, and then enjoy your trip. * Plenty of opportunities to socialise as a team. In addition to internal meetups, our international team hosts regular get-togethers—virtually and in person when possible. * Free tax declaration filing, of course, through the Taxfix app—and internal support for all personal tax-related questions. * Have a four-legged friend in your life? We’re happy to have dogs join us in the office. Excited? So are we. Learn more about Team Taxfix on our blog and get a glimpse of our culture.   At Taxfix, we believe that incredible things happen when you have a wealth of perspectives and experiences. We're proudly committed to equal employment and development opportunities no matter your gender, race, religion, age, sexual orientation, colour, disability, or place of origin. To help mitigate any potential unconscious biases, we ask that you refrain from including your picture, age, or marital status on your CV. Let your experiences speak for themselves. Not sure if you meet all the requirements for this role? Please apply anyway. You might bring something special to the team that we hadn't considered previously.

Taxfix

OUR STORY: Every year millions of people are either filing their taxes in fear or giving up on their tax refund altogether. We're working on fixing that. Our intuitive app enables anyone, regardless of education or background, to file their taxes with newfound confidence. Spread across Germany, Spain and the UK, the team at Taxfix Group with its brands Taxfix and Steuerbot, is a compassionate group of solution-finders. We speak our minds openly, and with over 400 professionals, including tax experts, developers, and IT security experts. The group has facilitated more than 3.5 billion euros in tax refunds for its customers since its founding in 2016. YOUR CHALLENGE: As a Senior Software Engineer, you’ll build core features for our flagship product, turning complex tax scenarios into simple, reliable experiences. You’ll work in a cross‑functional team to ship delightful customer journeys, and you’ll champion a strong engineering culture that prioritises scalable design, quality, and maintainability. YOUR RESPONSIBILITIES AND DECISIONS: * Collaborating with product management and design to work towards help solve customer problems * Contribute to technical direction and strategy to further the long-term product vision. * Create a great developer experience through good tools and practices that empower seamless delivery. * Be part of cross-functional teams, working closely with other platform and product teams. * Collaborate with other engineers and support an environment that values development, growth, and a safe environment to raise challenges. YOUR PROFILE: * +5 years experience with React (ideally React Native) on the Frontend * +5 years of experience with node.js on Backend * Exposure to public Cloud Environment (Google Cloud, AWS or MS Azure) * Familiarity with DevOps tools and concepts * Familiarity with backend concepts and technologies (authentication systems, databases, cloud) * Experience with integrating with diverse APIs * Curiosity for AI-assisted development and familiarity with tools such as Cursor, GitHub Copilot or similar * Passionate about writing maintainable and elegant code. * A pragmatic person with a strong positive attitude. WHY TAXFIX? * A chance to do meaningful, people-centric work with an international team of passionate professionals. * Holistic well-being with free mental health coaching sessions and yoga. * A monthly allowance to spend on an extensive range of services that you can use and roll over as flexibly as you like. * Employee stock options for all employees—because everyone deserves to benefit from the success they help to create. * 30 annual vacation days and flexible working hours. * Work from abroad for up to six weeks every year. Just align with your team, and then enjoy your trip. * Plenty of opportunities to socialise as a team. In addition to internal tech meetups, our international team hosts regular get-togethers—virtually and in person when possible. * Free tax declaration filing, of course, through the Taxfix app—and internal support for all personal tax-related questions. * Have a four-legged friend in your life? We’re happy to have dogs join us in the office. Excited? So are we. Learn more about Team Taxfix on our blog and get a glimpse of our culture. At Taxfix, we believe that incredible things happen when you have a wealth of perspectives and experiences. We're proudly committed to equal employment and development opportunities no matter your gender, race, religion, age, sexual orientation, colour, disability, or place of origin. To help mitigate any potential unconscious biases, we ask that you refrain from including your picture, age, or marital status on your CV. Let your experiences speak for themselves. Not sure if you meet all the requirements for this role? Please apply anyway. You might bring something special to the team that we hadn't considered previously.