Tech Lead Full Stack Developer (f/m/x)

Architect, design, and build a scalable web platform from scratch, covering both frontend and backend
Lead development of user‑facing features using modern frontend frameworks
Develop and maintain backend services, including APIs, microservices, data models, and business logic
Design resilient, performant architecture across databases, services, and APIs
Collaborate closely with product, business, and engineering stakeholders in an Agile (Scrum) environment
Ensure high‑quality, rapid delivery through CI/CD pipelines, automated testing, and code reviews
Design and build scalable cloud infrastructure, preferably on GCP, using infrastructure as code, containerization, and serverless solutions
Mentor engineers, promote team autonomy, uphold architectural standards, and drive technical excellence
Work with both relational and NoSQL databases

At least 8 years of software engineering experience, including 3+ years in full‑stack roles designing, building, and launching web platforms
Strong expertise in modern frontend frameworks (React, Angular, or Vue), including component‑driven architecture, state management, routing, and responsive UI
Solid backend experience covering RESTful APIs, microservices, domain‑driven design, scalable architectures, and fault tolerance
Proven ability to build platforms and tools from scratch and deliver end‑to‑end solutions under tight timelines
High level of autonomy: ownership of technical decisions, task management, and delivery with minimal supervision
Experience with relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Cassandra) databases
Proficient with Git and version control workflows
Deep understanding of architectural best practices combined with a fast‑paced, pragmatic, and results‑driven delivery mindset
Availability to work from the Kraków office 6–8 times per month
Residing in Poland required

Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People

Hexjobs Insights