Senior Software Engineer, CoinDesk Media

Bullish, Inc.; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

CoinDesk is seeking a Senior Full-Stack Engineer to join the Media Engineering team. You will own complex features across web, mobile apps, and services, with a focus on performance, reliability, and security.

You will work with Next.js, React, Node.js, and TypeScript, applying automated testing and DevSecOps principles. Experience with AI tooling and large-scale publishing platforms is highly valued.

Qualifications

• 7 to 8 years of experience shipping production software.

Responsibilities

• Autonomous Problem Discovery: Spot critical gaps and unassigned challenges across our architecture before they impact users.
• Technical Direction & Standards: Proactively set and drive technical direction, architectural standards, and engineering excellence across the media stack.
• Force Multiplication & Mentorship: Actively raise the technical bar for engineers, share context, and perform code reviews to avoid bottlenecks.
• End-to-End Delivery Excellence: Own complex features from concept to production with product managers and designers.
• Full-Stack Execution: Architect and ship functionality across web, mobile apps, and services using Next.js, React, TypeScript, and backend services.
• AI-Native Engineering: Leverage AI tools daily; champion internal AI tooling to accelerate workflows.
• Safe Release & Operational Governance: Build CI/CD pipelines and observability with feature flags for safe deployments.

Skills

Lead-level track record

Full-stack mastery

Web performance/architecture

Automated testing

Cross-functional collaboration

DevSecOps mindset

Large-scale publishing

Tools

React

Next.js

Node.js

TypeScript

Playwright

Maestro

LaunchDarkly

Redis

CMS platforms

Job description

CoinDesk is the most trusted media, events, indices and data company for the global crypto economy. Since 2013, CoinDesk Media has led the story of the future of money and investing, illuminating the transformation in society and culture that comes with it. Our award-winning team of journalists delivers news and unparalleled insights that bring transparency, comprehension and context. CoinDesk Events gathers the global crypto, blockchain and Web3 communities at annual events such as Consensus, the world's largest and longest-running crypto festival. CoinDesk Indices offers expertise in digital asset indices, data and research to educate and empower investors. For more information on CoinDesk media and events, please visit http://coindesk.com [coindesk.com] and for breaking headlines, data and indices visit http://coindeskmarkets.com [coindeskmarkets.com] In November 2023, CoinDesk was acquired by the Bullish group, owner of Bullish, a regulated, digital assets exchange. For more information on Bullish, please visit https://bullish.com. CoinDesk operates as an independent subsidiary with an editorial committee to protect journalistic independence.

Reports to: Director, Engineering, CoinDesk. The Team: CoinDesk Media Engineering. The CoinDesk Media Engineering Team builds and optimizes the digital touchpoints that connect millions of global readers to the digital asset economy. Our mission is to ensure seamless, real-time access to breaking journalism, multimedia, and market intelligence for millions of readers worldwide. We are responsible for the architecture, development, and optimization of coindesk.com, the CoinDesk mobile applications, and the high-availability services layer behind both.

What You'll Do:

• Autonomous Problem Discovery: Spot critical gaps and unassigned challenges across our architecture before they impact users. You take immediate initiative to design and deliver robust, lasting solutions.
• Technical Direction & Standards: Proactively set and drive technical direction, architectural standards, and engineering excellence across the media stack. You balance near-term execution with sustainable, long-term system health.
• Force Multiplication & Mentorship: Actively raise the technical bar for the engineers around you. You share context openly, provide thoughtful code reviews, and eliminate knowledge silos so no single person becomes a bottleneck.
• End-to-End Delivery Excellence: Own complex features from concept to production. You collaborate directly with product managers and designers on scoping, steer deployment, and maintain production reliability, performance, and security.
• Full-Stack Execution: Architect and ship resilient functionality across our web surface, mobile apps, and services layer. You build clean, maintainable systems with Next.js, React 19, TypeScript, and modern backend services.
• AI-Native Engineering: Leverage AI tools as a standard part of how you design, build, and optimize software. We use Claude Code, Open Code, and open-source models daily. You champion internal AI tooling that accelerates workflows for product managers, designers, and editorial staff.
• Safe Release & Operational Governance: Champion progressive delivery practices using feature flags in LaunchDarkly. You build dependable CI/CD pipelines and production observability so the team can deploy often with complete confidence.

What You'll Bring:

• Lead-Level Track Record: 7 to 8 years of experience shipping production software. You demonstrate verified end-to-end ownership of at least one complex, high-traffic production system from initial design through maturity.
• Full-Stack Ecosystem Mastery: Deep hands-on authority across modern web and backend technologies. You bring proven expertise in React, Next.js, Node.js, TypeScript, RESTful APIs, and content management platforms.
• Web Performance & Architecture Expertise: In-depth knowledge of Next.js, server-side rendering (SSR), and advanced caching patterns. You have a track record of tuning Core Web Vitals to deliver immediate page responsiveness at scale.
• Quality as a Feature: A disciplined commitment to automated testing across unit, integration, and end-to-end suites with tools like Playwright and Maestro. Automated testing is your default standard, never an afterthought.
• Cross-Functional Partnership: Strong communication skills with an appetite for working in a small, direct team. You move easily between deep technical debates and collaborative working sessions alongside product managers, designers, and newsroom partners.
• DevSecOps & Resiliency Mindset: Practical experience establishing automated CI/CD pipelines and embedding security best practices across client and server boundaries. You manage production risks with feature flags and actionable telemetry.
• Large-Scale Publishing Platforms: Proven background designing or maintaining high-volume consumer platforms or media properties with tens of millions of monthly impressions.

Nice to Haves:

• Architectural Pruning & Simplification: Proven experience deprecating and decommissioning legacy infrastructure and services, leaving codebases leaner and easier to maintain.
• Mobile Application Development: Hands-on experience building or maintaining production mobile applications using React Native and Expo.
• Modern Runtimes & High-Speed Datastores: Exposure to alternative execution runtimes like Bun and Elysia, along with high-throughput caching in Redis.
• Identity & CMS Platforms: Familiarity with modern authentication protocols using Auth0, alongside structured headless CMS architectures like Sanity.
• Monetisation, Analytics & Cloud Tooling: Familiarity with Google Ad Manager, Stripe billing, HubSpot, Amplitude, and Google Cloud Platform services with Terraform.

EQUAL OPPORTUNITY

In an effort to attract, retain, develop and promote the most qualified individuals, CoinDesk is committed to treating all applicants and employees in a nondiscriminatory manner with respect to the terms and conditions of employment, without regard to race, color, religion or belief, sex, national or ethnic origin, ancestry, age, marital status, sexual orientation, gender identity, veteran status/service, physical or mental disability, or any other classification protected by applicable law. This mandate governs all aspects of employment, including recruitment, selection, promotion, training, education, social and recreation programs, compensation, discipline, termination and access to benefits.

ACCOMMODATION

CoinDesk is also committed to providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the application process, please send an e-mail to [e-mail] and let us know the nature of your request. Learn more at www.coindesk.com