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

Senior • Hybrid

27,300 - 33,600 PLN

Krakow, Poland

Join as a Lead Full Stack Engineer and build a modern web platform used for risk, compliance, and business architecture management. You will work on both frontend and backend, delivering end-to-end solutions and collaborating closely with product managers, engineers, and business users to transform complex requirements into practical tools. You will take ownership of technical decisions and uphold high development standards to improve automation, compliance, and data-driven decision-making.

Tasks

Architect, design, and build a scalable web platform from scratch (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 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 on GCP using infrastructure as code, containerization, and serverless solutions
Mentor engineers, promote team autonomy, uphold architectural standards, and drive technical excellence
Work with relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Cassandra) databases

Requirements

At least 8 years of software engineering experience, including 3+ years in full-stack roles
Strong expertise in React or Angular, including component-driven architecture, state management, routing, and responsive UI
Solid backend experience with RESTful APIs, microservices, domain-driven design, and scalable architectures
Proven ability to build platforms and tools from scratch and deliver end-to-end solutions
High level of autonomy and ownership of technical decisions
Experience with relational and NoSQL databases
Proficient with Git and version control workflows
Deep understanding of architectural best practices and pragmatic delivery mindset
Availability to work from the Kraków office 6–8 times per month
Residing in Poland

What we offer

Employment stability and long-term market presence
Profit-sharing program
Attractive benefits package including private healthcare and benefits cafeteria platform
Class A offices or remote work options
Opportunity to work on projects for international brands
Budget to support employees’ ideas and initiatives
Investment in professional growth through meetups, webinars, and training platforms
Supportive and collaborative work atmosphere

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."

Check if your resume is ATS-ready before applying →Build an ATS-optimized resume