Principal Software Engineer, Colleague Tech (Kraków, Hybrid)

Tesco Technology; Kraków; Hybrid; PLN 401,760 - 524,520; Full time

Benefits offered by this job

Up to 45% yearly bonus

Car allowance

Permanent contract

Tax-deductible expenses

Private healthcare

Cafeteria & Multisport

Additional 4 days of paid leave

Increase in annual leave

Learning opportunities

Back-to-school day

Fertility leave

Sports activities with trainer

Referral bonuses

MacBook as work tool

Job summary

Tesco Technology in Kraków is seeking a Principal Software Developer to lead the design and implementation of strategic HR, Payroll, Learning & Development, and Workforce Management platforms, ensuring simple, efficient colleague experiences.

The role combines technical leadership with mentoring across squads, a strong focus on microservices, cloud and DevOps practices, and a hybrid work model (60% in the office). A permanent contract and attractive benefits accompany the opportunity.

Qualifications

• 10+ years in software development in a senior/principal role.
• Hands-on with JavaScript/TypeScript, React, Node.js.
• Experience with cloud platforms (Azure), Docker, Kubernetes.

Responsibilities

• Technical Leadership: Drive architecture and design across multiple systems.
• Cross‑functional Collaboration: Partner with product managers and stakeholders.
• Innovation: Introduce new tools and approaches to improve speed and quality.
• Team Empowerment: Mentor engineers and promote best practices.
• System Ownership: Evolve core colleague platforms and integrations.
• Operational Excellence: Ensure high availability and robust DevOps practices.

Skills

JavaScript/TypeScript

React

Node.js

Microservices

REST APIs

Event-driven

Azure

Docker

Kubernetes

CI/CD

Test automation

Infrastructure as code

Mobile & web apps

Enterprise environments

HR systems familiarity

Job description

Tesco Technology in Kraków is seeking a Principal Software Developer to lead the design and implementation of strategic HR, Payroll, Learning & Development, and Workforce Management platforms, ensuring simple, efficient colleague experiences.

The role combines technical leadership with mentoring across squads, a strong focus on microservices, cloud and DevOps practices, and a hybrid work model (60% in the office). A permanent contract and attractive benefits accompany the opportunity.