Senior Full-Stack Engineer - Remote

AI Job Summary

7+ years building production full-stack applications.

Strong expertise in TypeScript, Node.js, and modern React development.

Experience with AWS serverless tech: Lambda, API Gateway, DynamoDB, SQS, and AWS CDK.

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Role Type

Anywhere • Contract • Full-time • Mid-level Senior

Description

We are building modern financial infrastructure for the next generation of businesses. We create secure, scalable, and developer-first software that powers complex financial workflows through intuitive products, robust APIs, and cloud-native architecture.

Our platform is built with TypeScript, React, and AWS serverless technologies, enabling businesses to manage financial operations through reliable software, APIs, and intelligent automation. We embrace modern engineering practices, AI-assisted development, and a strong culture of ownership to build products customers can trust.

If you’re excited about solving complex engineering challenges and building production systems that matter, we’d love to hear from you.

Attributes We Value

We look for engineers who combine technical excellence with ownership and product thinking. You enjoy solving difficult problems, care deeply about software quality, and take responsibility for delivering secure, reliable systems from design through production.

You embrace AI-assisted engineering as a force multiplier, while applying sound judgment around architecture, security, testing, and long-term maintainability.

About the Team

Our Engineering team builds a modern serverless fintech platform powering accounts, transactions, payments, integrations, and developer-facing products. We build not only exceptional web experiences, but also APIs, SDKs, and AI-ready interfaces that enable developers, customers, and intelligent agents to interact with our platform safely and efficiently.

What You’ll Do

We are looking for a Senior Full-Stack Engineer to help build and scale our cloud-native fintech platform. You’ll work across React, TypeScript, AWS serverless infrastructure, and developer-facing APIs, taking ownership of features from architecture through production.

Working closely with Product and Engineering, you’ll help transform early-stage ideas into secure, scalable, and production-ready systems while contributing to engineering best practices, automation, testing, and AI-assisted development.

Responsibilities

Design, develop, and maintain production-grade full-stack applications using TypeScript, React, and Node.js.

Build serverless backend services with AWS Lambda, API Gateway, DynamoDB, SQS, and AWS CDK.

Develop secure customer-facing APIs, SDKs, and developer-facing interfaces.

Build reliable event-driven systems, webhook handlers, and transaction workflows with strong operational resilience.

Integrate third-party financial services, payment providers, and external APIs.

Implement secure authentication, authorization, RBAC, and multi-tenant application architecture.

Write high-quality automated tests and contribute to CI/CD, observability, and monitoring.

Leverage AI-assisted development tools to improve engineering velocity while maintaining production-quality code.

Participate in architecture discussions, code reviews, technical planning, and continuous platform improvements.

Who You Are

We’re looking for candidates who meet the minimum qualifications below. Preferred qualifications are a plus.

Qualifications

7+ years of professional software engineering experience building production full-stack applications.

Strong expertise in TypeScript, Node.js, and modern React development.

Experience building production frontend applications, including API integrations, state management, routing, and responsive UI.

Proven experience with AWS serverless technologies, including Lambda, API Gateway, DynamoDB, SQS, and AWS CDK.

Experience building APIs, background workers, webhooks, and event-driven systems.

Strong understanding of authentication, authorization, API security, and multi-tenant applications.

Experience designing reliable transaction workflows with robust testing and error handling.

Experience integrating third-party APIs, ideally within fintech, payments, banking, or other high-reliability environments.

Comfortable using AI-assisted engineering tools and applying strong technical judgment to AI-generated code.

Preferred Qualifications

Experience in fintech, payments, banking, treasury, or financial infrastructure.

Familiarity with Hono, OpenAPI, React Query, React Router, Playwright, or Turborepo.

Experience designing SDKs, developer platforms, customer-facing APIs, or AI-agent interfaces.

Experience with DynamoDB data modeling and production serverless operations.

Experience building internal developer tooling, automation, or AI-powered engineering workflows.

Why Join Us

Build technology that powers real-world financial operations.

Work with a modern TypeScript stack, AWS serverless infrastructure, and AI-native engineering workflows.

Own meaningful technical decisions and make a direct impact on product direction.

Join a collaborative team focused on engineering excellence, innovation, and continuous learning.

Equal Opportunity