Senior Full Stack Engineer

Role Description

We're looking for a Senior Full Stack Developer to help us build and scale the next generation of our publishing marketplace. This role is about shipping high-quality features end-to-end on a lean, AI-augmented team where your output punches well above its weight. You'll also mentor teammates, contribute to technical direction, and raise the bar for how we build.

As a Senior Full Stack Developer, you'll own features from database to UI and everything in between. We're an AI-native engineering team - we treat tools like Cursor and Claude Code as core infrastructure, not nice-to-haves. You'll work closely with leadership and product to turn ambiguous problems into shipped software. Day to day, you will:

• Design and implement high-quality, scalable and resilient web applications.
• Ship features end-to-end in partnership with product managers and designers: design APIs, optimize queries, polish UI and own the outcomes.
• Deploy and manage cloud-native applications on AWS, ensuring high availability, performance, and security.
• Contribute to and influence architecture decisions that will shape how we scale the marketplace over the next 12–24 months.
• Build AI-powered platform capabilities - semantic matching between brands and publishers, in-app agents, campaign performance prediction, etc.
• Keep the platform fast, reliable, and secure under load; proactively address bottlenecks and production issues.
• Implement security best practices (e.g. OWASP guidelines) and ensure compliance with data privacy regulations (e.g. GDPR, CCPA) across all development stages, including secure coding, data encryption, and access control.
• Drive continuous improvement through code reviews, agentic workflows, automated testing, and CI/CD practices.
• Mentor teammates through code reviews, pairing, and career development.

Qualifications

• Proficiency in both front-end (JavaScript/TypeScript, Vue/React) and back-end (Node.js, Golang) technologies.
• Fluency in databases (PostgreSQL, Clickhouse), APIs (REST/GraphQL), and cloud infrastructure (AWS/GCP).
• Real experience directing agentic coding workflows: you've used tools like Cursor or Claude Code to scaffold entire features, caught the subtle bugs they introduce, and know where they reliably fall short.
• Proficiency operating in both human-in-the-loop and human-on-the-loop paradigms.
• Strong understanding of software engineering principles, design patterns, and best practices.
• Experience integrating LLM APIs or ML models into production applications.
• Comfort working in fast-moving environments: you bias for shipping, iterate quickly, and bring others along with you.
• A track record of influencing architecture, scaling systems, and making pragmatic trade-offs.
• Strong communication skills: you can advocate for smart technical decisions with leadership, while ensuring the team feels heard and supported.
• Bonus: background in adtech, programmatic advertising, or marketplace platforms with proven track record in developing and scaling high-traffic, large-scale applications.

Requirements

If you don’t meet 100% of the above qualifications, you should still consider applying. Studies show that you can still be considered for a role if you meet just 50% of the position’s requirements.

Benefits

• Competitive salary + equity package (we believe in shared upside).
• $155,000-185,000/yr depending on country location and experience level.
• Flexible remote work + optional office access.
• Generous paid time off / leave policy.
• Health & wellness benefits (depending on location).
• Opportunities for fast growth, mentorship, and leadership.
• High autonomy and ownership - you’ll see the direct impact of your work.

Company Description

Linkby is a growing, VC-backed adtech startup on a mission to democratize the link between brands and trusted voices - helping both grow and thrive. We’re transforming how brands share their stories with the world’s most trusted publishers, on a platform that feels like magic.

• Our technology connects D2C advertisers with high-quality publishers and powers CPC-based press releases that turn great storytelling into measurable results.
• We believe transparency and effectiveness go hand in hand, and that every connection between a brand and a publisher should create value for both sides.
• We’re a remote-first team with hubs in key cities - Sydney, London, Toronto, and New York - for those who thrive on in-person collaboration.