Software Engineer - Frontend

We're looking for a Software Engineer with frontend expertise to join our Sage HCM Localisation engineering team in Barcelona. This is a mid-level role for a capable frontend engineer who can deliver well-structured UI work across a large-scale enterprise product, collaborate effectively with senior engineers, and continue building depth across React, Ext JS, and modern frontend practices.

You'll contribute to both new development in React and the maintenance of an established Sencha Ext JS codebase - working within a team that includes a Frontend Engineering Lead and Senior Software Engineers who will support your growth. If you're looking for a role where you can deepen your frontend skills in a complex, real-world product environment, this is a strong next step.

This is a hybrid role requiring 3 days per week in our Barcelona office.

First 90 Days

30 Days: Get up to speed with the Sage HCM frontend codebase, development tooling, and team practices. Understand how React and Ext JS coexist in the product and where your work will sit. Begin contributing to sprint delivery - small features, bug fixes, and UI improvements - with support from senior engineers and the Frontend Engineering Lead.

60 Days: Take ownership of well-defined frontend tasks independently. Build and maintain React components, work within the Ext JS modules where needed, and collaborate with QA, backend engineers, and product colleagues to deliver reliable, tested UI changes. Participate actively in code reviews and sprint ceremonies.

90 Days: Deliver end-to-end frontend features with confidence - from translating designs and user stories through to working, tested code. Contribute constructively to technical discussions and code reviews. Begin identifying small opportunities to improve code quality, reduce duplication, or simplify existing implementations.

Meet the Team
You'll join a cross-functional Sage HCM Localisation delivery team working across payroll, HR, compliance, and reporting features. The team includes frontend and backend engineers, QA, solution designers, and product owners, operating in an Agile environment with a strong focus on delivery quality.
You'll work closely with the Frontend Engineering Lead and Senior Software Engineers, who will provide technical direction and support your development. The dual-framework frontend — React for new development, Ext JS for established modules — reflects the reality of evolving a mature enterprise product, and you'll gain practical experience working across both.

How Success Will Be Measured

Quality, correctness, and maintainability of the frontend code you deliver

Reliable contribution to sprint goals - tasks completed to a good standard, on time, with clear communication when blockers arise

Good test coverage for your assigned UI changes

Collaborative approach with QA, backend, product, and design colleagues

Growing confidence and independence in tackling frontend tasks across both React and Ext JS

Qualifications

2+ years of professional frontend development experience in a commercial software environment

Good working knowledge of React, modern JavaScript (ES6+), component-based development, and frontend build tooling

Solid understanding of HTML, CSS, responsive layouts, browser debugging, and accessible UI development

Some experience with Sencha Ext JS, or a genuine willingness to learn and work within an established Ext JS codebase

Understanding of RESTful APIs, JSON data structures, form handling, validation, and common frontend integration patterns

Familiarity with Git, pull request workflows, package managers, and Agile delivery practices

Ability to work independently on well-defined tasks whilst knowing when to ask for support

Good communication skills and a collaborative approach to problem-solving

Fluency in English

Nice to Have

Experience with TypeScript, React Testing Library, Jest, Cypress, Playwright, or similar testing tools

Exposure to enterprise design systems such as the Carbon Sage Design System

Experience working with Figma designs or collaborating with UX and product teams

Background in Payroll, HR, HCM, ERP, or other business-critical SaaS products

Russian, Ukrainian, or Polish language skills would be beneficial but are not essential

Want to know more about our Product?: https://hcm.sage.com/

At Sage, we offer you an environment where you can grow professionally without compromising your personal well-being. Our benefits package is designed to provide stability, flexibility, and balance:

Medical and dental insurance: Fully funded medical and dental insurance.

Flexible benefits: Exchange part of your salary and make tax savings on meal and transport vouchers, childcare, and training.

Well-being: Free access to the Calm app (for up to 5 users), 24/7 counselling, and emotional support from our Healthy Mind Coaches. We also offer self-care and parenting resources through the Cleo app.

Flexible working: flexibility of working one hour in, one hour out, shortened workdays on Fridays and during the summer, and the opportunity to work from over 40 countries for up to 10 weeks per year through our Work Away program.

Annual leave: 23 working days of vacation, 5 paid days per year for volunteering.

Extended leave: 7 extra days of maternity leave and 5 extra days of paternity leave, on top of the legal allowance, available after one year of service.

Financial support: Life and disability insurance, salary advances of up to 3.5 times your net monthly pay, a €300 net marriage bonus, and access to Sage's employee stock purchase plan at a discounted rate.

Learning and development: Free premium subscription to external learning platforms

Health and Safety Responsibilities

Fostering the safety culture, by leading with your own example.

Following established safety procedures and reporting potential hazards promptly helps maintain a secure and efficient workplace.

Participating in safety training sessions and adhering to preventive guidelines and procedures, the objective is minimizing risks and protecting yourself and the rest of your colleagues.

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