Lead JavaScript Engineer

Mixcloud

Lead Engineer for Encore's full-stack team enhancing an online platform for booking live musicians. Work on the customer web app, mobile app, backend services, and improve functionality.

Posted 7/13/2026full-timeLondon • 🇬🇧 United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates strong full-stack engineering capabilities with expertise in TypeScript, JavaScript, React, and Node.js/Express, while effectively balancing technical work with business impact. Proven ability to mentor, prioritize tasks, and maintain a reliable tech infrastructure in a production environment.

Highest-signal resume keywords

Full-Stack EngineeringTypeScript/JavaScript ProficiencyReact and Node.js/Express ExperienceAI-Assisted Coding Tools FamiliarityCloud Configuration and DevOps Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack EngineeringTypeScriptJavaScriptReactNode.jsExpressAI-Assisted Coding ToolsCloud ConfigurationDevOpsTech Debt Reduction

Soft Skills

Strong Communication SkillsAutonomous Decision-MakingMentorship

Tools & Technologies

React NativeExpoRailwayGitHubPlaywrightViteVitestGoogle CloudAWSStripe

Industry Keywords

Production Software EnvironmentTech Infrastructure MaintenanceCommercial MindsetBespoke Payment IntegrationsSEO Landing Pages

Tech Stack

Tools & technologies

AWSCloudJavaScriptNode.jsReactReact NativeTypeScriptWordPress

About the role

Key responsibilities & impact

Transform Encore into a more focused, intuitive self-serve platform for both musicians and customers, making it seamless and delightful to use.
Bring systems-level understanding and stewardship of strategy to the tech/product team (and across the company)
Pastoral mentorship of another full-stack engineer
Maintenance of our tech infrastructure (keeping downtime to a minimum, and fixing critical bugs/team requests in a prioritised and timely manner)
Continuous formation/refinement of tech projects of strategic importance (e.g, tech debt, stack modernisation)
Deliver on the release cadence for tech/product projects of strategic importance
Improve Encore key features including messenger, job listings, search and musician admin panels
Continued build-out of the USA platform — SEO landing pages, musician-side functionality, and bringing the US experience up to parity with the UK platform
Keep technical output closely and visibly aligned with commercial priorities, and always identify the highest-impact work and the next bottleneck to remove
Keep the platform reliable — minimising downtime and resolving critical bugs and team requests in a timely, well-prioritised way
Work with bespoke payment integrations, including Stripe for the US market
Reduce tech debt on an ongoing basis — including migrating toward a more formalised meta framework and moving our WordPress blog off Digital Ocean and onto Railway

Requirements

What you’ll need

Lead-level engineering ownership in a production software environment
Strong full-stack experience with TypeScript/JavaScript — comfortable across the stack rather than specialised in just one layer
Experience with React for frontend and Node.js/Express for backend services
Comfort moving between frontend web work and infrastructure/DevOps tasks (containers, cloud configuration) — at Encore, engineers regularly jump between the two
Experience working with AI-assisted coding tools, such as Claude Code Skills, MCP servers and Routines.
A product and commercial mindset: the ability to weigh technical work against business impact, prioritise ruthlessly, and know what to cut to ship faster
Strong communication skills — you'll work closely with product, design, non-technical stakeholders, and leadership on technical priorities across the company
Comfort operating with autonomy as an individual contributor; we don't micro-manage, and you'll be trusted to make day-to-day technical decisions independently
Experience with (or willingness to quickly get up to speed on) our stack: React Native/Expo, Railway, GitHub (incl. CI and end-to-end testing), Playwright, Vite/Vitest, Google Cloud, AWS, Twilio, and Stripe
Eligible to work in the United Kingdom

Benefits

Comp & perks

Zero-to-one impact: Be at the forefront of solving some of the music industry’s most intriguing challenges.
Real problem-solving: You’ll work on complex, meaningful challenges that impact thousands of musicians and event organisers.
True ownership: Take the lead in shaping product direction and enjoy a high level of autonomy in your work.
Direct impact: Work in a small, dynamic team where your contributions directly affect our users’ experiences.