Mid-level Software Developer in Test in London

Mid-level Software Developer in Test in London

London Full-Time 45000 - 55000 £ / year (est.) No working from home possible
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At a Glance

  • Tasks: Design and maintain automation frameworks for Connected TV, mentoring juniors along the way.
  • Company: Join FX Digital, a dynamic tech company focused on innovation.
  • Benefits: Enjoy competitive salary, profit sharing, generous leave, and pension contributions.
  • Other info: Collaborative environment with opportunities for mentorship and career growth.
  • Why this job: Make a real impact on global Connected TV users while growing your skills.
  • Qualifications: 2+ years in test automation with strong TypeScript/Python knowledge.

The predicted salary is between 45000 - 55000 £ per year.

We're looking for a Mid-level Software Developer in Test to join our Quality Engineering team at FX Digital. This is a hands-on role for a genuinely self-driven engineer who cares deeply about the work they do and loves being part of a team.

You’ll take ownership of meaningful pieces of our automation platform, work closely with senior engineers, and start coaching more junior members of the team. The role involves extensive work with CI pipelines running on real Connected TV devices — no prior TV experience required, we'll teach you everything you need. The successful candidate will be based full-time at our London office.

What We Offer

  • A dynamic, fast-paced environment where innovation is at the heart of everything we do.
  • The opportunity to work on real-world projects that impact Connected TV users across the globe.
  • Ownership of substantial pieces of our automation platform.
  • Structured mentoring from senior engineers, and the chance to mentor juniors and interns in turn.
  • A platform to take your ideas from inception to implementation.
  • Lab-based work and continued investment in your learning and development.

About You

  • You're a self-starter. You take an idea, run with it, and check in when it's useful — not because you need someone to tell you what to do next.
  • You genuinely care about the work you produce. 'Good enough' on your own output isn’t good enough for you.
  • You're passionate about teamwork. You enjoy pairing, reviewing, and getting the best out of the people around you.
  • You have solid hands-on experience in test automation and want to deepen it.
  • You write clean, well-documented code and care about quality — your own, and your team’s.
  • You're curious about new technologies and keen to work out where they fit.
  • You like to build things and you’re energised by seeing your work in production.
  • You communicate clearly with engineers, product, and non-technical stakeholders.

Responsibilities

  • Design, build and maintain automation frameworks and tooling, with guidance from senior engineers on larger architectural decisions.
  • Own pieces of our CI pipelines — configuring, maintaining, diagnosing and fixing issues.
  • Contribute across the full test lifecycle: requirement analysis, test planning, execution, defect capture and reporting.
  • Write and review code, upholding our quality and documentation standards.
  • Investigate and triage failures, including intermittent ones, and drive them to resolution.
  • Mentor junior engineers and interns through pairing, code review and informal coaching.
  • Report and prioritise bugs; communicate clearly with internal and external stakeholders.
  • Contribute to test strategy conversations on your projects.
  • Research new tools, frameworks and approaches, and share what you learn with the team.

Qualifications

  • 2+ years of professional experience in test automation, SDET or equivalent software engineering roles.
  • Strong working knowledge of TypeScript and/or Python, and at least one modern test framework (Playwright, Cypress, WebdriverIO, or similar).
  • Good understanding of Node.js and JavaScript, and comfort with bash scripting.
  • Working knowledge of CI/CD principles and tools such as Docker, GitHub Actions / GitLab CI, or equivalent.
  • Experience with Agile/Scrum development processes and associated tools (Jira).
  • Solid documentation skills and the ability to explain technical concepts clearly.
  • A track record of taking ownership of non-trivial pieces of work and delivering them.

Desirable

  • Experience with micro services.
  • Some experience with performance, accessibility or security testing.
  • Cloud platform experience (AWS, GCP, Azure).
  • Prior experience mentoring junior engineers or interns.
  • Experience with Infrastructure as Code (IaC) and configuration management tools such as Terraform, CloudFormation, or Ansible, enabling automated provisioning, configuration, and maintenance of scalable test environments.

Why Work at FX?

  • Annual profit share distributed equally across all roles and departments.
  • Pension contributions with Scottish Widows.
  • Generous 35 days of annual leave.

Mid-level Software Developer in Test in London employer: FX Digital Limited

At FX Digital, we pride ourselves on fostering a dynamic and innovative work environment where every team member's contributions are valued. As a Mid-level Software Developer in Test, you'll have the opportunity to take ownership of significant projects while benefiting from structured mentoring and a culture that encourages continuous learning and collaboration. With generous annual leave, profit sharing, and a commitment to employee growth, our London office is an excellent place for those looking to make a meaningful impact in the world of Connected TV.

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Contact Details:

FX Digital Limited Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Mid-level Software Developer in Test in London

Tip Number 1

Network like a pro! Reach out to folks in the industry, attend meetups, and connect with people on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.

Tip Number 2

Show off your skills! Create a portfolio showcasing your test automation projects. Whether it's GitHub repos or a personal website, let your work speak for itself and make it easy for potential employers to see what you can do.

Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence is key, so get comfortable talking about your experiences!

Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who take the initiative to engage directly with us. Don’t hesitate to follow up after applying to show your enthusiasm!

We think you need these skills to ace Mid-level Software Developer in Test in London

Test Automation
CI/CD Principles
TypeScript
Python
Modern Test Frameworks (Playwright, Cypress, WebdriverIO)
Node.js
JavaScript

Some tips for your application 🫡

Show Your Passion:When writing your application, let your enthusiasm for test automation shine through. We want to see that you genuinely care about the work you do and are excited about the opportunity to contribute to our team.

Be Clear and Concise:Make sure your application is easy to read and straight to the point. Use clear language to describe your experience with test automation and any relevant technologies. We appreciate well-documented code, so apply that same clarity to your written application!

Highlight Teamwork:Since we value collaboration, don’t forget to mention your experiences working in teams. Share examples of how you've paired with others or mentored junior engineers, as this aligns perfectly with what we're looking for.

Apply Through Our Website:We encourage you to submit your application through our website. It’s the best way for us to receive your details and ensures you’re considered for the role. Plus, it makes the whole process smoother for everyone involved!

How to prepare for a job interview at FX Digital Limited

Know Your Tech Stack

Make sure you brush up on your TypeScript and Python skills, as well as any modern test frameworks like Playwright or Cypress. Be ready to discuss how you've used these technologies in past projects, and think of specific examples where you’ve taken ownership of your work.

Show Your Team Spirit

Since teamwork is key for this role, prepare to share experiences where you’ve collaborated with others. Think about times you’ve mentored junior engineers or worked closely with senior team members. Highlight your passion for pairing and code reviews!

Demonstrate Problem-Solving Skills

Be ready to talk about how you approach diagnosing and fixing issues in CI pipelines. Share examples of challenges you've faced in test automation and how you resolved them. This will show that you can handle the hands-on nature of the role.

Ask Insightful Questions

Prepare some thoughtful questions about the company’s approach to test automation and the tools they use. This shows your genuine interest in the role and helps you understand how you can contribute to their projects effectively.