Team Lead Fullstack Engineer (AI, Automation)

At Web Impact, an email marketing agency and digital solutions provider, the team builds socially impactful digital products. The role is hybrid based in Kraków or nearby with work from the Kraków office. The tech stack includes Next.js, React.js, Node.js, NestJS, Golang, Elixir, Rust, PostgreSQL, BigQuery, ClickHouse, AWS, Fly.io, Google Cloud, DigitalOcean, LavinMQ, BullMQ, Kafka, GitLab CI, and AI tools like OpenAI and Claude.

• 2.5+ years professional full-stack experience
• Experience leading, mentoring, or coordinating engineering teams with ambition to become Team Lead
• Strong frontend skills in React.js and Next.js
• Backend experience with Node.js (preferably NestJS)
• Experience integrating external APIs including auth, pagination, retries, rate limits
• Hands-on experience with modern AI tools (OpenAI, Claude, Cursor)
• Good SQL skills (preferably PostgreSQL)
• Experience with async processing, queues, and background jobs
• Understanding of building reliable systems including error handling, retries, observability
• Strong communication skills, ability to work cross-functionally
• Fluent in Polish (C1) and English (B2)

Nice to have:

• Experience with Rust (async, Tokio, Axum)
• Experience with Elixir (Phoenix LiveView, GenServer)
• Understanding of distributed systems and architectures
• Experience with multi-region deployments and geo-distributed infrastructure
• Experience building systems with high parallelism (many workers processing concurrently)
• Familiarity with distributed databases and data consistency trade-offs
• Experience with multi-tenancy architectures (tenant isolation, scaling strategies)
• Experience with high-throughput event pipelines

• Develop end-to-end features across SaaS products and internal tools with senior engineers
• Provide hands-on technical leadership and support daily engineering activities
• Coordinate delivery, set technical direction, and maintain engineering standards
• Mentor engineers, review code, and remove technical blockers
• Build high-performance frontends using Next.js and React.js
• Develop scalable backend services with Node.js and NestJS
• Design and integrate APIs (REST, WebSockets, external services)
• Build and maintain automation workflows and background jobs
• Work with async systems, queues, and event-driven architectures
• Integrate third-party services considering rate limits, retries, and auth flows
• Use AI tools to improve development speed, testing, and automation
• Collaborate with product, data, and leadership teams
• Build MVPs, proofs-of-concept, and new product ideas
• Rapidly validate business ideas through experimentation and iteration
• Evolve prototypes into production-ready systems

AI & Automation:

• Use Claude Code, Cursor, and OpenAI SDK daily
• Build AI-driven workflows and integrations iteratively
• Automate repetitive processes like data handling and content
• Apply LLMs pragmatically in production
• Own problems from idea to production
• Ship fast, test in real conditions, iterate based on outcomes
• Be accountable for end-to-end delivery
• Prioritize speed over perfection

Administratorem danych osobowych jest Web Impact Sp. z o.o. sp. k., Rynek Główny 28, 31-010 Kraków. Dane przetwarzane są wyłącznie w celu realizacji procesu rekrutacyjnego. Prawo do dostępu, sprostowania, usunięcia, ograniczenia przetwarzania, wniesienia sprzeciwu, prawo do przenoszenia danych oraz prawo do wniesienia skargi do Prezesa UODO przysługuje. Podanie danych wymaganych przepisami Kodeksu pracy jest obowiązkowe. Dane mogą być przekazywane Just Join IT i innym podmiotom wspierającym proces rekrutacji.