Software Engineer

Responsibilities

• Front‑End Development
• Build responsive, accessible, high‑performance interfaces using modern JavaScript frameworks (e.g., React, Vue, Angular).
• Translate UX/UI designs and wireframes into production‑ready code.
• Optimise performance related to rendering, load times and SEO.
• Ensure compatibility across devices and browsers.
• Implement and maintain unit tests for front‑end components.
• Back‑End Development
• Develop and maintain robust, scalable RESTful APIs using C# and/or Python frameworks.
• Design and manage relational and non‑relational databases (e.g., PostgreSQL, MongoDB).
• Implement secure authentication and authorisation (OAuth 2.0, JWT).
• Integrate third‑party APIs and services.
• Maintain unit tests for services, APIs and business logic.
• Architecture & DevOps
• Contribute to system design discussions focused on scalability and maintainability.
• Manage CI/CD pipelines using GitHub Actions, Jenkins or CircleCI.
• Work with cloud providers (AWS, GCP, Azure) to provision and operate infrastructure.
• Containerise applications using Docker and orchestrate via Kubernetes where appropriate.
• Quality & Collaboration
• Write unit, integration and end‑to‑end tests to ensure quality standards.
• Participate in Agile ceremonies (planning, stand‑ups, retrospectives, code reviews).
• Share knowledge and support junior colleagues through mentoring.
• Document code, APIs and architectural decisions clearly and consistently.
• Personal attributes
• Degree in Computer Science, Software Engineering or related field (or equivalent experience).
• 3+ years' experience in full‑stack or equivalent development roles.
• Proficiency in JavaScript/TypeScript and at least one major front‑end framework (React preferred).
• Back‑end experience with Node.js, Python, Java or similar.
• Experience with SQL and NoSQL databases.
• Strong Git knowledge and familiarity with branching strategies.
• Experience with cloud platforms, containerisation (Docker) and CI/CD pipelines.
• Understanding of web security best practices (OWASP, HTTPS, CORS).
• Ability to explain technical concepts to diverse audiences.
• Preferred
• Experience with GraphQL.
• Knowledge of microservices and event‑driven systems (Kafka, RabbitMQ).
• Familiarity with accessibility standards (WCAG 2.1).
• Experience in regulated environments (GDPR, ISO 27001).
• Open‑source contributions or active portfolio.
• Experience with monitoring/observability tools (Datadog, Sentry, New Relic).
• Using AI in your application
• We're happy for you to use AI tools to research us, polish your cv/cover letter, and practice interviews. Please make sure everything you submit reflects your authentic skills and experience.
• To keep things fair, please don't use AI to invent or exaggerate achievements, complete assessments (unless we say it's allowed), or to generate live interview answers.
• Rewards and Benefits
• We believe in supporting our employees in both their professional and personal lives. As part of our commitment to your well-being, we offer a comprehensive benefits package, including but not limited to:
• 26 days holiday, plus bank holidays(pro-rata for part time or fixed term roles)
• Referral Scheme
• Private medical
• Employee Assistance program
• You will also have the opportu

Benefits

Additional Information

Software Engineer Salary: 216,000 PLN - 252,000 PLN per annum, plus company benefits Location: Hybrid Warsaw or Krakow Contract: Full Time, Permanent Shifts: 40 hours per week, Monday - Friday, 8.30am until 5:30pm with 1 hours unpaid lunch break Work model: Hybrid Williams Lea seeks a Software Engineer to join our team! Williams Lea is the leading global provider of tech-enabled business and marketing services helping clients manage and transform processes through resilient, scalable 24/7 operations. We combine deep expertise, agentic AI-imbedded workflows, and a global delivery model into a tech-enabled, seamless human expert-in-the-loop experience that helps clients achieve superior business outcomes. Built on a strong heritage and great client relationships, we harness deep industry expertise, emerging technology and our global "Optishore™" delivery model to plan, build, execute and measure business processes, driving operational agility and digital transformation at speed and scale. Williams Lea, an RRD company, serves clients in 20 countries across four continents and has 15,000 employees worldwide. Purpose of role This role is responsible for designing, building and maintaining both client‑facing and server‑side components of modern web applications. Working across the full software stack, the Software Engineer helps deliver scalable, high‑quality digital products that meet user and organisational needs. The role involves close collaboration with product managers, UX/UI designers, and engineering peers to take features from concept to production. It also includes contributing to architectural decisions, code reviews, and the evolving technical direction of the team. Reporting Structure Reports to: Engineering Team Lead Direct reports: None

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