Senior Software Engineer

Build the products and platform that power loyalty and customer-first monetisation.

Thanks is building a rewards and customer-first monetisation platform that delivers sustainable growth – for publishers, advertisers and customers. We’re operating at scale today and entering a phase where execution quality, speed, and sound technical judgment matter more than ever.

We’re hiring a Senior Engineer to design and ship meaningful product improvements across our platform. You’ll independently drive work end-to-end, bring clarity to complex decisions, and consistently deliver at pace in a high-trust, high-impact environment.

This role is hands-on, product-minded, and execution-focused.

What you’ll do

Ship impactful features end-to-end: Design, build, test, and deploy frontend and backend functionality across our TypeScript / Node / React stack.

Design thoughtful solutions: Independently design technical solutions within our architecture, clearly communicating trade-offs while balancing speed, scalability, and long-term impact.

Own meaningful surface area: Take responsibility for a subsystem or domain area, ensuring quality, maintainability, and steady improvement over time.

Bring product thinking into engineering: Challenge scope when needed, contribute to sequencing decisions, and ensure we’re solving the right problems in the right way.

Maintain high engineering standards: Write clean, well-tested code, participate actively in code reviews, and contribute to a culture of contextual quality.

Support production reliability: Troubleshoot issues, resolve bugs, and ensure performance and stability across live systems.

Collaborate openly: Communicate clearly about progress, risks, and trade-offs, contributing to a high-trust, feedback-oriented engineering culture.

What we’re looking for

• Strong experience building production systems using TypeScript, Node.js, and React
• Ability to independently design scalable solutions and clearly communicate technical trade-offs
• Strong software design fundamentals and system thinking
• Comfort owning features from problem definition through to production
• Pragmatic judgment – you balance ideal architecture with shipping value
• Comfort operating in ambiguity and actively creating structure where it’s missing
• High emotional intelligence and strong communication skills
• Strong internal drive – you take pride in your craft and care deeply about the quality and impact of what you ship
• Uses AI thoughtfully to augment problem solving and delivery – accelerating exploration, debugging, and implementation while maintaining high standards for quality, correctness, and ownership
• A genuine ownership mindset – you take responsibility for outcomes and follow through

Nice to have

• Experience building and scaling production systems in product-led startup or scale-up environments
• Exposure to adtech, marketplaces, or performance-driven platforms 
• Familiarity with Cloudflare (Workers, Queues, KV)
• Exposure to data systems such as ClickHouse or similar OLAP platforms
• Understanding of experimentation frameworks
• Experience contributing to architectural discussions in growing systems

Our stack

• Backend – Node.js, TypeScript, Turborepo
• Frontend – React, Next.js, React Native
• Infrastructure – Cloudflare (Workers, Queues, KV)
• Data – Prisma, PlanetScale, ClickHouse
• Testing & CI – Vitest, Playwright, GitHub Actions
• Observability – Datadog, Sentry, OpenTelemetry
• Experimentation – Statsig

Why Thanks?

We power growth for the world’s leading brands, delivering tens of millions of high-value “thanks” moments every month.

What makes this role different:

Real ownership: You’ll drive meaningful product work end-to-end, with trust and autonomy.

Impact you can see: Your work directly influences performance, reliability, and growth.

High standards, low ego: We value thoughtful decisions, clear communication, and strong follow-through.

Attractive compensation: Including worthwhile equity.

Flexibility with intent: This role is based in NYC, with 4 days in the office. 

We’re building something deliberately – not copying what already exists. If you’re excited by product-led engineering and solving complex problems at pace, we’d love to hear from you.

Let’s build something extraordinary together.