Senior Software Engineer in London

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Job Description
Role
About FX Digital
FX 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 and cross-platform development environments Android/Google TV/Kotlin, or iOS/tvOS, React
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, and
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
If 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.
Please note salary expectations for this role (as listed on Job advert on our FX Digital website careers page).
If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.
Apply
Location:
London
Job Type:
FullTime

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