Principal Software Development Engineer (Enabling Functions - Colleague)

Tesco Technology

Kraków

Hybrid

PLN 401,760 - 524,520

Full time

14 days+

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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

About the role

At Tesco, technology is at the heart of everything we do – powering the way millions of colleagues and customers live, work, and shop. We are looking for a Principal Software Developer to join our Enabling Functions - Colleague technology team, which plays a key role in delivering intuitive, reliable, and innovative solutions for our 300,000+ colleagues globally.

As a Principal Software Developer, you’ll lead the design and implementation of strategic systems that enable our HR, Payroll, Learning & Development, and Workforce Management platforms – ensuring every colleague experience is simple, efficient, and empowering.

Responsibilities

Technical Leadership: Drive architecture and design across multiple systems, ensuring scalable, secure, and maintainable software solutions.
Cross‑functional Collaboration: Partner with product managers, architects, and business stakeholders to understand colleague needs and shape technology roadmaps accordingly.
Innovation: Introduce new tools, frameworks, and approaches that enhance development speed, quality, and performance across the colleague tech space.
Team Empowerment: Mentor and guide software engineers and tech leads across squads; promote engineering best practices and continuous improvement.
System Ownership: Lead the evolution of core colleague platforms, including integrations with internal services and third‑party systems.
Operational Excellence: Ensure high system availability, performance, and data integrity through robust DevOps practices and incident management.

Experience and skills

10+ years in software development with proven experience in a senior or principal engineering role.
Strong hands‑on expertise in JavaScript / TypeScript, React, Node.Js.
Strong understanding of microservices architecture, RESTful APIs, event‑driven systems, and distributed computing.
Experience working with cloud platforms (preferably Azure), Docker, Kubernetes.
Hands‑on knowledge of CI/CD pipelines, test automation, and infrastructure‑as‑code.
Proven experience designing and building scalable mobile and web applications with a focus on usability, performance, and responsiveness.
Demonstrated ability to operate effectively in large, enterprise environments.
Familiarity with enterprise HR or colleague‑focused systems is a plus (e.g., Oracle HCM, Zellis).

Soft skills

Passion for building technology that improves the colleague experience.
Strong communication and stakeholder engagement skills.
Strategic thinker with a pragmatic, delivery‑focused mindset.
Comfortable navigating ambiguity and driving change across complex environments.

Location and work model

This role requires you to be based in or near Kraków, as you will spend 60% (3 days) of your week collaborating with colleagues at our office locations or local sites and the rest remotely.

Benefits

Up to 45% yearly salary bonus – based on both individual and business performance
Car allowance
Permanent contract from the go – as a sign of our trust in your abilities
Tax‑deductible expenses (IP)
Private healthcare (LuxMed)
Cafeteria & Multisport
Additional 4 days of paid leave to support your well‑being and family life
Increase in annual leave (from 20 to 25 days) for those not yet eligible for the full holiday entitlement
Learning opportunities – certified technical training and a learning platform (Udemy)
Back‑to‑school day – 1 day off for parents of primary school children
Fertility leave – up to 2 weeks of paid leave for IVF treatment
Sports activities with a personal trainer in the office
Referral bonuses
MacBook as your work tool