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Senior Full Stack Developer – R&D (Remote)
Location: Remote — Based in the United Kingdom or Ireland
Department: Publisher Growth & Revenue
About Contenta AI
Contenta AI is a next-generation Agentic AI platform built for content creators, publishers, and media groups. We empower editorial and monetization teams with AI-driven tools for content creation, SEO optimization, trend detection, collaboration, and advanced monetization via hybrid header bidding and programmatic strategies. Our mission is to make content creation smarter and monetization more effective — at scale.

Founded by media and ad tech veterans from companies like Google and Microsoft, Contenta AI is backed by industry leaders and is rapidly expanding across Europe and beyond.
Role Overview
We’re looking for a Senior Full Stack Developer — R&D to join our core engineering team. You’ll play a crucial role in developing the foundational architecture of our SaaS platform — from LLM-powered content creation tools to real-time monetization intelligence systems.

You’ll work across the stack and closely with product and AI teams to design, build, and iterate on innovative solutions that serve both editorial and ad ops teams.

If you’re excited about shaping the future of GenAI applications in media and thrive in a fast-paced, early-stage environment, we’d love to meet you.
Key Responsibilities
  • Design and build scalable full-stack applications using React / Next. js, Node. js, and Nest. js
  • Integrate LLM APIs (e.g., OpenAI, Claude) including streaming and retrieval-augmented generation
  • Build and optimize back-end infrastructure with both relational and NoSQL databases
  • Develop secure and scalable REST APIs, including authentication and webhook integrations
  • Work with Prisma ORM to streamline data access across services
  • Write and maintain clean, testable, and well-documented code
  • Collaborate with Product and AI teams to experiment, iterate, and validate hypotheses
  • Participate in architectural discussions, R&D explorations, and roadmap planning
  • Contribute to the engineering culture by mentoring teammates and advocating for best practices
Requirements
  • 5+ years of experience in full stack web development
  • Strong proficiency in JavaScript and TypeScript
  • Deep experience with React, Next. js, and server-side rendering (SSR)
  • Solid experience with Node. js, Nest. js, or Express. js
  • Experience with Prisma ORM and both SQL and NoSQL databases
  • Hands-on experience with REST API development and integration
  • Familiarity with webhook systems and asynchronous job processing
  • Experience integrating LLMs, including streaming APIs (OpenAI, etc.)
  • Excellent problem-solving skills and product-oriented mindset
  • Strong communication skills and ability to work in a remote, async-first team
Nice to Have
  • Background in AdTech, including SSPs, DSPs, Header Bidding, and Prebid. js
  • Experience working in early-stage startups or R&D-focused roles
  • Knowledge of Tailwind CSS, Shadcn UI, or similar component libraries
  • Experience integrating fintech or multinational payment APIs
Why Join Contenta AI?
  1. Remote-first culture — work from anywhere in the UK/Ireland
  2. Competitive base salary + performance bonus
  3. Comprehensive benefits package (health, dental, vision — depending on location)
  4. Generous paid time off, parental leave, and annual team retreat
  5. Professional development stipend and career growth opportunities
  6. A diverse, mission-driven team building a category-defining platform in media tech
Contenta AI is proud to be an equal opportunity employer.
We welcome applicants from all backgrounds and celebrate the value of diverse perspectives.

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