This role sits within the Vesper team at Deltatre — the platform powering live and on-demand streaming experiences for some of the world's most recognised media brands. You will work across web, React Native mobile, and connected TV (10-foot) applications, contributing to the component systems, performance standards, and delivery pipelines that underpin our clients' products.
We are hiring at two levels. Both roles are hands-on engineering positions for people who care about quality, take ownership of their work, and are comfortable in a cross-functional environment. The distinction lies in depth of experience, scope of contribution, and degree of independence expected.
Senior Front-End Software Engineer
For engineers who are ready to lead solutions and raise the bar for those around them.
As a Senior Front-End Engineer, you will take end-to-end ownership of features and solutions across our platform. Beyond your own delivery, you will contribute actively to how the team works — mentoring less experienced developers, shaping technical decisions at the solution and feature level, and helping establish standards that others build on.
Your day-to-day will include:
- Design, build, and maintain high-quality front-end experiences across web, React Native mobile, and connected TV platforms (tvOS, Android TV / Fire TV, Samsung Tizen, LG webOS)
- Take the lead on solution and feature design — bringing well-reasoned technical proposals and seeing them through to delivery
- Mentor mid-level and junior developers through code review, pairing, and day-to-day guidance — helping build capability across the team
- Contribute to and evolve our shared component library and design system, with a focus on consistency, accessibility, and long-term maintainability
- Set a high bar for front-end performance — profiling, measuring, and improving rendering, load times, and analytics instrumentation
- Collaborate with back-end engineers, QA, and product to define robust, scalable solutions
- Contribute to CI/CD pipelines and front-end tooling, improving build reliability and developer experience
- Stay current with the front-end ecosystem and bring emerging patterns and practice into the team
Mid-Level Front-End Software Engineer
For engineers with solid foundations who are ready to take on meaningful ownership and grow their craft.
As a Mid-Level Front-End Engineer, you will take ownership of features and components within the Vesper platform, working with increasing independence across our target environments. You will collaborate closely with senior engineers and contribute to a team culture where quality and continuous improvement matter.
Your day-to-day will include:
- Build and maintain high-quality front-end experiences across web, React Native mobile, and connected TV platforms
- Contribute to our shared component library and design system — writing reusable, accessible, maintainable code
- Apply front-end performance principles — understanding how your code affects rendering, load times, and instrumentation
- Participate in technical design discussions, asking good questions and contributing your perspective
- Collaborate with back-end engineers, QA, and product teams to deliver robust solutions
- Work within CI/CD pipelines and front-end tooling as a self-sufficient contributor
Develop your knowledge of the front-end ecosystem and apply it to your work
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What we're looking for at Senior level
You produce work that others learn from. You don't wait to be asked — you identify problems, propose solutions, and follow through. You understand that technical quality and team capability are inseparable, and you invest in both.
Required
- Deep proficiency in TypeScript and modern JavaScript (ES6+)
- Substantial production experience with React and React Native, including cross-platform delivery
- Solid command of HTML and CSS/SCSS — responsive and adaptive layouts, flexbox, grid
- Proven track record shipping apps across multiple targets: web, mobile (iOS/Android) and/or connected TV
- Experience building and maintaining component libraries or design systems
- Deep understanding of front-end performance — measurement, optimisation, and analytics integration
- Experience with RESTful APIs or GraphQL
- Comfortable working within CI/CD pipelines and modern front-end tooling
- Demonstrated testing approach — experience with modern front-end testing frameworks and a test-first mindset
- Clear communicator who can articulate technical decisions to peers and cross-functional stakeholders
Valued
- Experience in the streaming or media industry — VOD, live events, player integrations, or DRM
- Hands-on 10-foot development experience across Samsung Tizen, LG webOS, Apple TV, or Android TV / Fire TV
- Familiarity with client-side data event instrumentation
- Knowledge of Node.js, AWS (Lambda, S3, CloudFront), or back-end concepts
- Curiosity about the full stack and how front-end decisions interact with broader system design
What we're looking for at Mid level
You can take a well-defined problem and run with it. You ask good questions early, flag blockers clearly, and deliver work you are proud of. You are actively developing your craft and open to the kind of feedback that accelerates that.
Required
- Solid proficiency in TypeScript and modern JavaScript (ES6+)
- Production experience with React and React Native
- Good understanding of HTML and CSS/SCSS — responsive layouts, flexbox, grid
- Experience shipping apps to at least one of: web, mobile (iOS/Android), or connected TV
- Some experience with component libraries or design systems
- Working knowledge of front-end performance concepts
- Experience with RESTful APIs or GraphQL
- Comfortable working within CI/CD pipelines and modern tooling
- Experience with front-end testing frameworks and an appreciation for test-first development
- Good communication skills and comfort working in an agile, cross-functional team
Valued
- Any exposure to the streaming or media industry
- Experience with 10-foot / connected TV development
- Familiarity with client-side data event instrumentation
- Awareness of Node.js, AWS, or back-end concepts
- Curiosity about the full stack
Who Thrives Here
Across both levels, we look for people who bring rigour and curiosity to their work in equal measure. You take quality seriously — not as a constraint, but as a standard you set for yourself. You communicate clearly, flag issues early, and treat your colleagues' time and context with respect. You are honest about what you know and what you are still learning.
This is an environment that rewards initiative. If you are looking for genuinely interesting work on a technically demanding platform, alongside people who hold themselves to a high standard, this may be exactly right.
Not sure which level is right for you? Apply anyway and tell us where you think you sit. We'll figure it out together.
Process and what to expect
- Introductory conversation: this is a step for us to get to know each other better, and for us to answer all questions you might have around Deltatre.
- Take-Home Assessment: we have a coding challenge waiting for you, to grab a sense of what you'll be dealing with. This step is the entry point in our process, and mandatory to acccess to the followng steps.
- 1-hour Technical round of Interview: we will use your Assessment as a starting point for a discussion with Senior team members in the video team. You will do code review and discuss additional technical aspects in details. This conversation, combined with the output of the assessment will allow us to make a solid technical evaluation.
- 1-hour Competency Based Interview: we are going to ask you some situational questions around how you deal with real-life scenarios at work. Easier doing it, more than explaining it!
If any of these formats would be difficult for you, tell us — we adjust regularly and can usually accommodate.
Accessibility and accommodation questions are welcome at any stage, including before you apply. Tell us what would work for you.
