Senior Frontend Software Engineer in London

RoleSenior Software Engineer

About FX DigitalFX Digital is a specialist Connected TV agency, providing a wide range of services, including Product Strategy, Design, Engineering, and Test Automation. We partner with global streaming brands such as Discovery+, BritBox, ATP Media, ITV, and Dyn.

As a Senior Software Engineer at FX Digital, you take a leading role in shaping the technical direction of our Connected TV and living room experiences.

With your extensive experience in application development and web technologies, you will lead technical solutions, mentor team members, and deliver engaging user experiences for large screen devices.

Key Responsibilities

Engineer and develop responsive, fluid, and data driven user experiences for mobile and large screen devices

Lead technical solutions for Connected TV, mobile and interactivity across smart devices

Contribute to product development initiatives that reach hundreds of thousands of users

Collaborate with product, design, and QA to understand customer needs and structure work for efficient delivery

Provide technical guidance and inspire the development team to deliver optimised, reliable, and maintainable code

Mentor team members, supporting them to improve their craft and grow their impact

Implement tools and processes that support the team\’s continuous delivery of value to users

Provide technical insight in customer meetings, presenting solutions and advising on architectural decisions

Collaborate with sales and marketing teams to present technical solutions to prospective clients

Stay current with industry developments by attending relevant events and training to maintain cutting-edge skills

Requirements

5+ years of professional experience in front-end or full-stack application engineering / development

Expert knowledge of TypeScript and the Javascript eco-system

Extensive experience integrating with RESTful APIs, unit testing frameworks, and debugging tools

Solid grasp of web architecture, including APIs, transfer protocols, and browser internals

Proficiency with CLI tools (e.g., yarn, npm) and some familiarity with CI/CD pipelines

Strong leadership, time-management, and communication skills

Desirable Skills

Passion for efficient code, performance optimisation, and pushing limits of constrained devices

Experience with video/audio player playback (e.g., hls.js), video delivery protocols, DRM

Experience with WebGL, RxJS, and stream-based programming

Experience in one or more native and cross-platform development environments Android/Google TV/Kotlin, or iOS/tvOS, React Native

Bachelor\’s degree in Computer Science, Mathematics, or a related field (or equivalent experience)

Why work at FX?

MacBook Pro on your first day at FX

Annual profit share distributed equally across all roles and departments

Pension contributions with Nest pensions

Generous 35 days of annual leave, including bank holidays and Christmas office shutdown

Monthly one-on-one Sanctus mental health coaching session

Optional Vitality Health Insurance with discounted Apple Watch, cinema tickets, and Amazon Prime

Cycle-to-work scheme with up to 47% savings on a new bike

Flexi start time between 9am and 10am

Employee referral scheme

Regular appraisals for feedback and growth

Weekly dedicated training time for personal development

Collaborate with prestigious global brands in media, sports, and entertainment

We take great pride in our culture of acceptance, diversity and inclusion

Complete regular surveys to provide anonymous feedback on the business, leadership team and your role to ensure that we are doing everything we can to keep improving and making FX a great place to work

Join us at our monthly Show and Tell, where team members update us on what they\’ve been working on

Get nominated for the monthly FX Factor by your peers and get recognised for your contribution to the business.

Get a chance to earn a £20 voucher for high project NPS scores

Additional InformationIf you\’re passionate about this role and believe you can add value, we encourage you to apply, even if your background doesn\’t match the job description exactly.

This is a full-time role based out of our office in Old Street, London. We can only consider applicants who are able to work 3 days per week from the office.

#J-18808-Ljbffr