Tech Lead

[The entire Appstack team will be living in a mansion starting 2026; therefore, if you are not interested in living with us, this opportunity is not for you]What is Appstack?Appstack is the simplest partner for mobile advertisers. Like Revolut made banking effortless compared to traditional banks, we make growing your mobile app plug-and-play with quick integrations, easy-to-use SDKs, transparent pricing, and a best-in-class dashboard experience.Job DescriptionAs Tech Lead at Appstack, you will own the technical foundation of our platform — from webapp to data pipelines — and lead a growing team of talented engineers.Your primary focus will be ensuring the stability, scalability, and evolution of our webapp while steering technical direction across the broader stack: cloud infrastructure, mobile SDKs, and data systems.You’ll work closely with the founders to define the technical roadmap, make pragmatic architecture decisions, and help Appstack scale efficiently. You’ll be hands-on when needed, while setting the standards for engineering excellence.ResponsibilitiesLead the end-to-end technical strategy for the Appstack platform.Take ownership of the webapp’s architecture, performance, and reliability.Guide and support engineers across data, SDK, and infra teams to ensure cohesive execution.Collaborate with product and design to deliver a fast, intuitive, and stable user experience.Drive code quality, testing, deployment, and observability best practices.Balance short-term delivery with long-term scalability and maintainability.Contribute directly to development when needed — especially on the webapp.Tech StackWebapp: React (Next.js), TypeScript, Drizzle, tRPC, VercelBackend & Semantic Layer: Python, cube.js, GCP, Cloud RunData: BigQuery, dbt, Airbyte, KubernetesSDKs: Swift, Kotlin, Flutter, React NativeYou might be a good fit if...Education & ExperienceNo degree required — we value skill and execution over credentials.5+ years of experience in software development, ideally across multiple layers of the stack.Proven leadership experience or tech ownership in a product company.Strong experience in webapp engineering, ideally full-stack (frontend + backend).Familiarity with big data stacks and cloud infrastructure.Bonus: Mobile app experienceTechnical SkillsDeep understanding of modern frontend frameworks (React, Next.js, TypeScript).Good architectural instincts for API design, system modularity, and scalability.Strong debugging and performance optimization skills on complex web systems.Exposure to CI/CD, monitoring, and cloud-native deployment workflows.Ability to context-switch between frontend, backend, data, and infrastructure discussions.Pragmatic approach: you care about solving the right problem, not using the fanciest tech.Soft SkillsYou lead by example and can earn trust from highly skilled engineers.You communicate clearly across technical and non-technical topics.You enjoy building simple, reliable systems and eliminating unnecessary complexity.You are hands-on and not afraid to jump into code when needed.English fluency is required.You are not a good fit if…AttitudeYou believe leadership means management, not technical ownership.You avoid getting involved in code when things get messy.You resist feedback or cling to one tech stack instead of adapting.Lack of rigorYou don’t test or document your work correctly.You prioritize speed over robustness.You delegate without understanding the problem first.Why Join Appstack?Immediate impact: Take control of the core product — the webapp that drives everything our users see.Lead a world-class team: Work with strong data, infra, and SDK engineers who will rely on your web expertise.Shape the future: Own the architecture and build the foundations of a scalable B2B SaaS platform.Grow with the company: This role is designed to evolve as Appstack scales — with you growing alongside it.