Senior Frontend Software Engineer

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 Software Development Engineer III 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 Software Development Engineer III, 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. You will be responsible for Using your in-depth knowledge of TypeScript, React, and the ecosystem of tools to develop and implement scalable frontend systems - including a high-level understanding of common DevOps platformsProfiling and optimising the codeApplying understanding of cohesion and architectural principles to create well-structured, maintainable softwareIdentifying patterns in code and refactoring the code towards them where it increases understanding and/or maintainability with minimal guidanceTranslating requirements into tasks & codeDeveloping high-quality code that can lead to rapid delivery, ruthlessly pursuing continuous integration and delivery - CI/CDCommitting code early and often, demonstrating understanding of version control & branching strategiesAutomating everything by defaultWriting secure code by default and following the secure coding policiesWriting maintainable code and observing basic hygiene practicesFollowing the best practices of continuous BDD/TDD/Performance/Security/Smoke testingWorking effectively with product stakeholders to communicate and translate needs into product improvementsContributing to group discussions on system design and understanding the domain well enough to work with Product Managers to drive valueSupporting production systems, resolving incidents and performing root cause analysisDebugging/finding complex problems and supporting/maintaining the software solutionSharing knowledge with the wider engineering communityProducing proof of concepts and conducting research to evaluate new solutions You will need Must have We are seeking individuals with a passion for Technology. You will demonstrate experience with different platforms and technologies. We expect to see some or all of the following: 8+ years of commercial experience as a Frontend Software DeveloperBest practices regarding all aspects of web development, including design, semantic HTML markup, CSS, TypeScript, and related technologiesExposure to a variety of JavaScript frameworks and libraries such as: React, Redux, React-Router and testing with React Testing Library Jest, Cypress, Playwright, Jasmine, Enzyme, and Mocha.Awareness and practice of UI performance best practicesUnderstanding and exposure to integrating REST API endpointsStrong experience and understanding of industry standard web accessibility, web design & usability, to support sites cross browser/platform devices with mobile-first approachA desire to write readable, maintainable, modular, and extendable codeExposure to the DevOps modelExperience in Lean and Agile environments and understanding of principles behind methodologies such as: BDD, ATDD, and TDD Nice to have Knowledge of Micro Frontends and Next.jsFamiliarity with managed QA processesBringing multiple viewport, responsive and adaptive web designs to lifeDeveloping web applications within the constraints of "non-standard" devices Whats in it for you? Salary UoP 26 000 - 33 000 PLN gross/month Hybrid work We know life looks a little different for each of us. That’s why at Tesco, we always welcome chats about different flexible working options. Some people are at the start of their careers, some want the freedom to do the things they love. Others are going through life-changing moments like becoming a carer, adapting to parenthood, or something else. So, talk to us throughout your application about how we can support. 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. BenefitsTesco is a diverse and exciting employer, dedicated to being #aplacetogeton, providing career-defining opportunities to all of our colleagues. If you choose to join our business, we will provide you with (for all): Up to 20% yearly salary bonus – based on both individual and business performancePermanent contract from the go – as a sign of our trust in your abilitiesTax deductible expenses (IP)Private healthcare (LuxMed)Cafeteria & MultisportAdditional 4 days of paid leave to support your well-being and family lifeIncrease in annual leave (from 20 to 25 days) to those not yet eligible for the full holiday entitlementLearning opportunities - certified technical training and learning platforms like UdemyBack-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 officeReferral BonusMacBook as your tool for workIf that sounds exciting, then we'd love to hear from you! Tesco is committed to celebrating diversity and everyone is welcome at Tesco. As a Disability Confident Employer, we’re committed to providing a fully inclusive and accessible recruitment process, allowing candidates the opportunity to thrive and inform us of any reasonable adjustments they may require About Us Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues. At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. Tesco is committed to celebrating diversity and everyone is welcome at Tesco. As a Disability Confident Employer, we’re committed to providing a fully inclusive and accessible recruitment process, allowing candidates the opportunity to thrive and inform us of any reasonable adjustments they may require. Want to get to know us better? Watch our team talk about our culture – YouTube What our colleagues like the most at Tesco:We develop our own productsWe make an impact; large scale of operationAccountability and respect are given to usWe cooperate and support each otherThere are great colleagues who are divided into small teams hereWe can develop and learn new thingsDiscover how our colleagues shape Tesco’s tomorrow.