Principal Software Engineer – Colleague Platforms

Tesco Technology; Kraków; Hybrid; PLN 402,000 - 525,000; Full time

Benefits offered by this job

Car allowance

Private healthcare

MacBook

Learning opportunities

Udemy platform

Paid leave

Annual leave increase

Cafeteria & Multisport

Referral bonuses

Job summary

Tesco Technology is seeking a Principal Software Developer to lead the design and implementation of strategic HR, Payroll, Learning & Development, and Workforce Management platforms. You will collaborate with product managers and architects to shape roadmaps, drive scalable architectures, and mentor engineers across squads.

Based in Kraków with hybrid work options, you will ensure high availability, performance and data integrity while delivering innovative colleague experiences for 300,000+

Qualifications

• 10+ years in software development in a senior/principal role.
• Hands-on expertise in JavaScript/TypeScript, React and Node.js.
• Strong knowledge of microservices, RESTful APIs and event-driven systems.
• Experience with cloud platforms (Azure), Docker and Kubernetes.
• CI/CD, test automation and infrastructure-as-code familiarity.
• Proven ability to design scalable mobile and web apps for large enterprises.

Responsibilities

• Provide technical leadership across multiple systems for HR, Payroll, Learning & Development, and Workforce Management platforms.
• Drive architecture and design ensuring scalable, secure, maintainable software.
• Collaborate with product managers, architects, and stakeholders to roadmap technology.
• Mentor engineers and promote best practices and continuous improvement.
• Oversee system ownership and integrations with internal and third-party services.
• Maintain high availability, performance and data integrity with robust DevOps practices.

Skills

JavaScript/TypeScript

React

Node.js

Microservices

REST APIs

Event-driven

Azure

Docker

Kubernetes

CI/CD

Tools

CI/CD tooling

Test automation

Job description

Tesco Technology is seeking a Principal Software Developer to lead the design and implementation of strategic HR, Payroll, Learning & Development, and Workforce Management platforms. You will collaborate with product managers and architects to shape roadmaps, drive scalable architectures, and mentor engineers across squads.

Based in Kraków with hybrid work options, you will ensure high availability, performance and data integrity while delivering innovative colleague experiences for 300,000+