Staff Full Stack Engineer

We’re looking for a Full-Stack Staff Engineer with a strong frontend orientation to drive technical excellence across Melio’s AP Platform group. You’ll take ownership of complex, high-impact infrastructure initiatives—elevating frontend and backend quality, improving performance and reliability, shaping our engineering standards, and enabling 3 teams to move faster with cleaner, scalable, partner-agnostic solutions.

Qualifications:

• 8+ years of experience building modern web applications in a full-stack environment.
• Deep expertise in TypeScript and React, including building scalable, reusable, and maintainable frontend architectures.
• Experience developing backend services and APIs using Node.js, Python, or similar.
• Experience with testing frameworks (Jest, Cypress, Playwright).
• Demonstrated ability to craft smart, high-impact solutions that unblock teams and significantly accelerate delivery.
• Experience driving cross-group/R&D/company technical initiatives, from design to adoption.
• Highly motivated, driven, and independent, with the ability to thrive in a dynamic environment

Bonus points:

• Passion for clean abstractions, scalable frontend patterns, and long-term technical thinking.
• Experience with performance profiling, monitoring and observability across FE & BE.

A day in the life and how you’ll make an impact:

• Lead and execute complex infrastructure and platform projects that improve velocity and quality across 3 engineering teams.
• Design and build frontend platform tools that keep our partner-facing interfaces clean, generic, and fully extendable.
• Own cross-company technical challenges - performance, resilience, monitoring gaps, architectural bottlenecks - delivering long-term solutions.
• Collaborate with engineering leads and the group director as the go-to IC for hard technical problems and missing infra.
• Build shared full-stack services, libraries, and tools that elevate engineering standards and streamline development workflows.
  

About the hiring department: 

The Engineering department is the backbone of Melio. We provide consultation, support and designs for technical solutions—supporting our customers and the entire organization. We get involved from the early stage of a project, making the connection between customer needs, our product design, and then translating these into solutions. 

What’s our stack?

In Melio, we are all in with AWS Serverless. Meaning all our services are managed by AWS and our infrastructure is deployed using SAM CLI built over CloudFormation.

Serverless gives us the freedom to build, scale and deploy applications faster than ever. We combine the usage of relational and document DBS, write mainly in TypeScript and Python for consistency and ability to share resources.

As part of an engineering team within a fintech company, you’ll have a unique opportunity to make a real impact on Melio, its product, our users and help the company scale.

Read more about our Engineering department tech blog. 

About Melio: 

Melio builds business-to-business (B2B) payment tools so small business owners can spend less time in the back office and more time on their craft. As the fastest-growing B2B payment platform in the US, Melio is working hard to find new and better ways to help small businesses succeed in the ways that work best for them.

With offices in New York, Denver, and Tel Aviv, and a vibrant work culture, Melio is expanding every single day. We are a diverse group of people who love what we do and do what we love. If you are a driven and passionate team player, you will fit right in. We are an equal-opportunity employer and are always on the lookout for top-notch talent—please reach out if you would like to join us on this exciting journey!