Full Stack Developer - PART TIME in London

Sing King is on a mission to delight millions of singers around the world through our portfolio of games and singing experiences across multiple platforms. Our successful flagship YouTube channel welcomes over 14 million subscribers and 30 million unique viewers each month, and along with our latest Mobile Game release, we are continuing to build innovative and exciting products that spread joy to singers wherever and whenever they sing. We are a team of music lovers, game enthusiasts and entrepreneurial spirits, passionate about our vibrant and growing community of global singing fans.

As our Full Stack Engineer, you will help transform processes and develop fast, reliable web-based tools and apps that deliver impact. This role sits within the Data & Tools function, responsible for building the systems that allow Sing King’s data, content, and products to operate reliably and scale intelligently. It’s responsible for orders, data validation, third-party reporting, distribution, and more. Under your guidance, you’ll evolve us from our existing combination of backend and frontend systems into a new bespoke solution incorporating an API currently being developed in Python (FastAPI with PostgreSQL) and a web-app frontend in React.js or similar.

• Lead the CMS architecture, the heart of the creation and distribution of our assets and data.
• Maintain and develop our internal REST API that centralises business logic for the CMS, tools, asset management, data validation, and publishing of Karaoke content.
• Transform the CMS frontend to deliver a fast, intuitive experience, built around how people actually work.
• Design and build automation workflows that remove manual toil from content production, such as thumbnail generation, media transcoding, uploading, scheduling, playlist generation, web-scraping and more.
• Prototype and develop simple light web-apps and services that empower internal teams or service our fans, whether that’s Discord/Slack bots, or simple ways for the public to request songs and submit user-generated content.
• Collaborate with Data experts to turn models and research into internal tools and help solve data quality challenges through fuzzy matching, LLM-assisted enrichment, or other solutions.

Organisation - Ability to manage multiple technical priorities with excellent time and project management.

• Agile approach - Can develop scrappy Proof of Concepts to pitch new ideas and generate buy-in, as well as making swift pivots if business priorities change.
• Attention to detail - Can deliver accurate results that are key to decision-making and maintaining high quality deliveries with our music industry partners.
• Security conscious mindset - Solid understanding of software engineering fundamentals, data privacy, and secure coding practices.
• Strong programming skills – Proficient in languages such as Python, Node.js, and JavaScript, with a solid understanding of core engineering principles.
• Version control & deployment practices – Strong experience with Git/GitHub and CI/CD workflows, with a focus on clean, reliable releases.
• Google Cloud Platform and backend systems, including deploying and maintaining production-ready web applications.

BONUS POINTS

• Passion for karaoke, rhythm games, or community-led mobile games.
• Experience with popular web scraping methods.
• Experience with PostgreSQL and BigQuery.

We believe in creative exchange and collaborative ownership. We prioritise ideas that make our players feel something - joy, energy, expression. We operate a hybrid working policy at Sing King and expect a balance of office and home working for this role - our office is in Farringdon, London. We offer a competitive salary and benefits package. We’re committed to building a diverse and inclusive team.