Fullstack Engineer

We just raised €3M to make sales humanRead moreAll positions👽Fullstack Engineer.Engineering/Stockholm, Sweden/Posted Jun 23, 2026Apply for this roleWe’re looking for a Fullstack Engineer to ship features end-to-end, from database to UI. You’ll build rock-solid systems that connect to CRMs, email providers, calendars, and sales tools, plus the interfaces reps use every day, while keeping latency low and reliability high. Must be obsessed with clean architecture, fast systems, and extreme ownership.Why joinWe’re a small, talent-dense team of engineers building a generation-defining company from Stockholm. We value speed, rigour, and extreme ownership. If you’re obsessed with product, thrive in ambiguity, and want to push the edge of what agents can do, you’ll feel at home.You’ll work on hard problems across the stack, building resilient integrations with enterprise systems, optimizing database queries, reducing API latency, and shipping the interfaces sales reps live in every day. Not another CRUD app.We’re backed by founders and operators behind Lovable, OpenAI, Tandem Health, and Neo4j. Our customers across 10+ countries report 90% less prospecting time, 3x market coverage, and 2x customer meetings.What you'll doIn one sentence: Ship features end-to-end, from the infrastructure that makes AI agents reliable, fast, and scalable to the interfaces reps use daily.Own features across the stack: Build complete slices, database schema, API, and React UI, and ship them to customersOwn integrations end-to-end: Design and build integrations with CRMs, email, calendars, and sales toolsReduce latency relentlessly: Optimize database queries, implement caching strategies, and eliminate bottlenecksScale the system: Design for horizontal scaling, handle increased load, and maintain <200ms response timesShip fast: Test ideas, run experiments, iterate daily on real customer feedbackShape the architecture: Make foundational decisions on database structure, API design, and system patternsWho you areCracked engineer obsessed with building great softwareComfortable with ambiguity, early-stage chaos, and fast iterationThrive on new tech, LLMs, knowledge graphs, agents, you name itExperience with API integrations, webhooks, OAuth flows, and third-party systemsComfortable across the stack: TypeScript on both sides, React on the frontCare deeply about performance, observability, and operational excellenceCare more about solving problems than polishing abstractionsFully committed to the mission: not “just a job”What we offerA team of obsessed engineers, full of speed, rigour, and gritMission-driven, no-BS culture: experiment, ship, learnMeaningful equity through qualified employee stock options (QESO) from day oneFully on-site in Stockholm; we believe in working togetherTop-tier compensation packageOur stackFrontendReactBackendTypeScript, Neo4j, PostgreSQL, Node.js, ExpressInfrastructureDocker, Google CloudAgentTypeScript, LLMs (Claude, OpenAI, Gemini), MastraAbout Spiich LabsSpiich is the agentic platform for sales teams. Reps focus on the human work, building relationships, building trust, and closing deals, while Spiich agents handle everything else: prospecting, lead generation, CRM updates, meeting prep, follow-ups, and everything in between. The system integrates knowledge graphs, memory, and agentic workflows to deliver real help, not just summarisation or search. We’re backed by founders and operators behind Lovable, OpenAI, Tandem Health, and Neo4j.How we hireSubmit your applicationIntro call with the teamTechnical interviewTake-home exerciseJoin us for trial work lasting 2 days on-site. We’ll see how you tick and you get to meet the team and explore whether joining Spiich feels right for you.We move fast; the full process typically takes under two weeks.How to applyDrop us a line with your GitHub/LinkedIn, a note on why this excites you, and your proudest achievement. No CV needed.Apply: hello@spiich.aiOther open positions.🤖Founding AI EngineerStockholm, Sweden · Posted May 18, 2026🎨Founding UI/UX & Brand DesignerStockholm, Sweden · Posted Jul 5, 2026💰Founding Account ExecutiveStockholm, Sweden · Posted May 27, 2026All positions