Fullstack Developer (m/w/d) Schwerpunkt Frontend – Konstanz, Berlin oder remote

SEITENBAU

DEINE AUFGABEN Du bist überzeugt, dass innovative Technologie und Software gesellschaftlich relevante Themen unterstützt, verändert und vorantreibt? Das sind wir auch! Unsere Kunden sind vielfältig. Unsere Softwareprojekte ebenso. Wir lassen die großen Visionen unserer Kunden Wirklichkeit werden und helfen ihnen dabei die Digitalisierung in Deutschland voran zu treiben. Dabei setzen wir auf unsere Begeisterung für Software-Engineering, Open Source und agiles Mindset. * Du bist Allrounder und Teil eines crossfunktionalen Teams und entwickelst Features im Frontend und Backend. * Du arbeitest dich in fachliche Fragestellungen unserer Kunden ein und entwickelst passende User Stories in Java. * Du begleitest aktiv den gesamten Entwicklungsprozess von der Konzeption bis zur Umsetzung. * Du unterstützt die Automatisierung und Weiterentwicklung unserer Build, Test und Release Prozesse. * Du führst Code Reviews im Team durch und arbeitest im Pair Programming, um die Qualität zu verbessern und Know-How zu verteilen. DAS BRINGST DU MIT * Ein abgeschlossenes Studium oder eine vergleichbare Ausbildung im Bereich Informatik  * Gute Kenntnisse in der Entwicklung von Anwendungen mit Java unter Einsatz von aktuellen Frameworks wie Spring Boot * Praktische Erfahrungen mit modernen komponentenbasierten Javascript Technologien wie Angular, React oder Vue, optimalerweise mit Typescript * Sicherer Umgang mit der Umsetzung barrierefreier Anwendungen  * Sicherheit im Umgang mit HTML und CSS * Ausgeprägtes Interesse an künstlicher Intelligenz und Motivation, dieses in die Softwareentwicklung einzubringen * Erfahrung in Unit- und Systemtests mit Technologien wie JUnit und Playwright * Lust auf agiles Arbeiten und Motivation, dich kontinuierlich mit neuen Technologien und Trends auseinanderzusetzen * Sehr gute Deutschkenntnisse (mind. C1) DAS BIETEN WIR DIR * Du arbeitest mit namhaften Kund*innen an gesellschaftlich relevanten und innovativen Projekten. * Du bist Teil eines selbstorganisierten Teams im agilen Umfeld mit hoher Eigenverantwortung. * Durch das breite Technologiespektrum und die Vielfältigkeit unserer Projekte und Kund*innen hast du die Möglichkeit, dich stetig weiterzuentwickeln. * Du trittst in ein wachsendes Unternehmen mit langfristiger Perspektive ein. * Um optimale Arbeitsbedingungen zu ermöglichen, setzen wir uns für dich und deine Familie ein. * Umfangreiche Benefits runden unser Angebot ab. KONTAKT Andre Lämmlen, HR Manager karriere@seitenbau.com Jonas Moser, HR Manager karriere@seitenbau.com Marie Braun, HR Manager karriere@seitenbau.com

Gitlab

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. *Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. INTERMEDIATE FULLSTACK ENGINEER - DATA PRODUCTS AN OVERVIEW OF THIS ROLE Data Products integrates GitLab and third-party software development lifecycle data, and builds the dashboards, APIs, and data products that turn it into reliable, interoperable intelligence for customers and internal teams. You'll work across the stack, contributing to frontend experiences, backend services, APIs, and AI-enabled workflows. This is a hands-on product engineering role. You'll develop features, learn how we build and operate large-scale data systems, and work closely with Senior and Staff Engineers to deliver secure, reliable, and performant solutions. We don't expect you to have all the answers, but we do expect you to ask questions, take ownership of your work, and make progress through ambiguity. WHAT YOU’LL DO * Develop well-scoped features, with support from Senior and Staff Engineers, for how GitLab and third-party data is ingested, modeled, and synced into the knowledge graph, meeting team goals for data freshness, sync reliability, and graph coverage. * Build parts of integrations with external systems for business context, including Jira, observability tools, Zendesk, and ServiceNow, increasing indexed business context while meeting team goals for data completeness and freshness in the graph. * Build features for the Software Engineering Intelligence dashboards, including DORA, value stream reporting, GitLab Duo, and software development lifecycle metrics rolled up across organizational structures, meeting team goals for reporting accuracy, performance, and coverage. * Contribute to design discussions and technical direction for your features, with guidance from Senior and Staff Engineers, helping deliver secure, reliable, and performant solutions on schedule. * Raise blockers and risks early, and work with Senior Engineers to unblock your work so milestones stay on track and delivery risk is reduced. * Participate in design review and code review, and apply feedback to improve code quality, maintainability, and delivery velocity. * Build a deep understanding of the system, including the data model and the platform the team builds on, so you can ship changes more independently and resolve issues faster. WHAT YOU’LL BRING * You find the owner, clarify the path, make the tradeoff, build the first version, and keep pushing until the work lands. * Deep production experience building and operating fullstack applications. * Hands-on fullstack proficiency with Go, Ruby, and Node. * Experience with data platforms such as ClickHouse or comparable OLAP systems, including data modeling and query optimization. * Hands-on experience building AI-powered product features. * Experience operating multi-tenant applications across software as a service and self-managed environments. * High velocity with sound judgment, strong written communication, and the ability to decompose complex initiatives into shippable milestones while creating alignment across stakeholders in an async-first environment. * Experience building third-party or API integrations. ABOUT THE TEAM Data Products works across three surfaces: * Dashboard and Reporting Framework Builds AI-native dashboard components so customers and internal teams can see engineering health and GitLab's impact across DORA, value stream reporting, AI impact, software development lifecycle trends, security, and quality, and launch their own custom dashboards on the same framework. * Internal Ingestion Ingests third-party data into GitLab and powers tools like the knowledge graph, building integrations so that signals from systems like Jira, Zendesk, ServiceNow, and observability tools become one queryable, near-real-time graph of the developer ecosystem. * External Ingestion Makes GitLab and knowledge graph data consumable outside the product through marketplace listings, data access APIs and software development kits, and co-branded partner products. We are a team in a highly ambiguous, high-impact space, and we need engineers who can create clarity while building, make practical tradeoffs, unblock cross-team work, and keep pushing until meaningful customer value lands. Remote-Global HOW GITLAB SUPPORTS FULL-TIME EMPLOYEES * Benefits to support your health, finances, and well-being * Flexible Paid Time Off  * Team Member Resource Groups * Equity Compensation & Employee Stock Purchase Plan * Growth and Development Fund * Parental Leave  Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. Additionally, studies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification. If you're excited about this role, please apply and allow our recruiters to assess your application. ---------------------------------------------------------------------------------------------------------------------------------- Country Hiring Guidelines: GitLab hires new team members in countries around the world. All of our roles are remote, however some roles may carry specific location-based eligibility requirements. Our Talent Acquisition team can help answer any questions about location after starting the recruiting process.   Privacy Policy: Please review our Recruitment Privacy Policy. Your privacy is important to us. GitLab is proud to be an equal opportunity workplace and is an affirmative action employer. GitLab’s policies and practices relating to recruitment, employment, career development and advancement, promotion, and retirement are based solely on merit, regardless of race, color, religion, ancestry, sex (including pregnancy, lactation, sexual orientation, gender identity, or gender expression), national origin, age, citizenship, marital status, mental or physical disability, genetic information (including family medical history), discharge status from the military, protected veteran status (which includes disabled veterans, recently separated veterans, active duty wartime or campaign badge veterans, and Armed Forces service medal veterans), or any other basis protected by law. GitLab will not tolerate discrimination or harassment based on any of these characteristics. See also GitLab’s EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know during the recruiting process.

Gitlab

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. *Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. STAFF FULLSTACK ENGINEER - DATA PRODUCTS AN OVERVIEW OF THIS ROLE As a Staff Fullstack Engineer - Data Products, you will help build GitLab's in-product insights on top of the Data Insights Platform and the GitLab Knowledge Graph. You will be the technical anchor across reporting dashboards, inbound graph ingestion, and outbound data delivery, helping turn software delivery data into reliable and actionable intelligence for customers and internal teams. This is a strong fit if you want to work in a 0 to 1 space where you can shape what gets built, make early architectural choices, and guide work from specification through production health. In this role, you will provide technical guidance across your domain, partner closely with Product, Design, and backend teams, and own outcomes across GitLab.com, Dedicated, and Self-Managed environments as we build out this area. WHAT YOU’LL DO * Architect how GitLab and third-party data is ingested, modeled, and synchronized into the Knowledge Graph as a near-real-time graph of the development ecosystem. * Coordinate integration with external systems such as Jira, observability tools, Zendesk, and ServiceNow to add business context to data products. * Design the Data Marketplace so customers can consume GitLab data through Snowflake, Databricks, and BigQuery without engineering handoffs. * Publish GitLab observability data as OpenTelemetry and support the APIs used for data access. * Define operational readiness for the systems your team ships across GitLab.com, Dedicated, and Self-Managed deployments. * Translate ambiguous product problems into practical technical plans and iterative roadmaps in partnership with Product, Design, and the graph backend team. * Resolve cross-team coordination with Graph Backend, AI Platform, and Infrastructure to keep delivery moving. * Mentor senior and intermediate engineers through design reviews, pairing, and code review. WHAT YOU’LL BRING * Experience owning product or platform systems end to end across multiple engineering and product teams at the staff level. * Strong fullstack technical skills with proficiency in Go, Ruby, and Node. * Depth in at least one area such as reporting and metrics platforms, graph data systems, or data access and warehouse integrations including Snowflake, Databricks, or BigQuery. * Hands-on experience building production data ingestion, systems integrations, or data access capabilities. * Experience operating multi-tenant systems across both SaaS and self-managed environments. * Strong judgment in ambiguity, with the ability to make tradeoffs, create clarity, and move early-stage work forward. * Clear written communication skills, including architecture proposals and design records that help distributed teams make progress asynchronously. * A practical and proactive approach to collaboration, with transferable experience welcomed from adjacent platform, data, or product engineering backgrounds. ABOUT THE TEAM The Data Products team is building the foundation for how GitLab turns software delivery data into reliable, interoperable, and actionable intelligence for customers and internal teams. Our scope includes Software Engineering Intelligence, dashboard and reporting frameworks, external data access and output, and internal and external data ingestion across areas such as DORA metrics, value stream reporting, AI impact, software delivery trends, security and quality metrics, custom reporting, data access APIs, OpenTelemetry-based output, and ingestion into the Knowledge Graph and Data Insights Platform. We work in a high-ambiguity, high-impact space, and we collaborate closely across product and platform groups using GitLab's asynchronous, distributed way of working. HOW GITLAB SUPPORTS FULL-TIME EMPLOYEES * Benefits to support your health, finances, and well-being * Flexible Paid Time Off  * Team Member Resource Groups * Equity Compensation & Employee Stock Purchase Plan * Growth and Development Fund * Parental Leave  Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. Additionally, studies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification. If you're excited about this role, please apply and allow our recruiters to assess your application. ---------------------------------------------------------------------------------------------------------------------------------- Country Hiring Guidelines: GitLab hires new team members in countries around the world. All of our roles are remote, however some roles may carry specific location-based eligibility requirements. Our Talent Acquisition team can help answer any questions about location after starting the recruiting process.   Privacy Policy: Please review our Recruitment Privacy Policy. Your privacy is important to us. GitLab is proud to be an equal opportunity workplace and is an affirmative action employer. GitLab’s policies and practices relating to recruitment, employment, career development and advancement, promotion, and retirement are based solely on merit, regardless of race, color, religion, ancestry, sex (including pregnancy, lactation, sexual orientation, gender identity, or gender expression), national origin, age, citizenship, marital status, mental or physical disability, genetic information (including family medical history), discharge status from the military, protected veteran status (which includes disabled veterans, recently separated veterans, active duty wartime or campaign badge veterans, and Armed Forces service medal veterans), or any other basis protected by law. GitLab will not tolerate discrimination or harassment based on any of these characteristics. See also GitLab’s EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know during the recruiting process.