Senior Fullstack Engineer

About Astra
Astra is building mission-critical infrastructure for moving money at scale. Our platform processes billions in annual transaction volume with 99.9%+ uptime, powering real-time transfers, bank debits, card disbursements, and complex financial compliance systems. We provide APIs and automation tools that enable businesses to move money programmatically while maintaining strict regulatory requirements.

The Role
We're looking for a Senior Fullstack Engineer who is primarily frontend-focused but comfortable contributing across the stack. You'll own the React and TypeScript surfaces our clients and internal teams depend on, while also being able to build and extend the Python APIs that support them. You'll work closely with our engineering team to ship features across our payments dashboard, internal tooling, and embedded product surfaces.

This role is a great fit if you think of yourself as a frontend engineer first, with enough backend range to move fast without always needing to hand off. Strong React and TypeScript skills are the foundation. Python fluency is a plus, not a prerequisite.

What You’ll Do: Own the Frontend Architecture
Lead frontend architecture decisions including component design, state management, performance, and scalability as our platform grows

Design and implement React and TypeScript interfaces for our payments dashboard, reporting surfaces, and embedded product experiences

Translate complex financial workflows into intuitive, accessible interfaces

Help establish and scale our frontend platform, including shared component libraries, tooling, and patterns the team builds on

Contribute Across the Stack
Build and extend Python APIs that power frontend features

Collaborate with backend engineers on data contracts, API design, and integration patterns

Participate in system design discussions and bring a product-quality perspective to backend work

Drive Frontend Standards
Establish and maintain frontend best practices, component libraries, and design patterns for a growing team

Mentor engineers and conduct code reviews with a focus on quality and consistency

Partner with product and design to refine requirements and push back when scope or UX is unclear

Support Internal Tooling
Build and improve internal tools used by our operations, compliance, and payments teams

Maintain high standards for reliability and usability across both external and internal surfaces

What We’re Looking For: Senior Fullstack Engineer Requirements
5+ years of software engineering experience with significant frontend ownership

Strong production experience in React and TypeScript, these are the primary skills for this role

Enough backend range to build and extend APIs independently, Python experience preferred

Demonstrated ability to own features end to end, from data layer to UI

Experience working in a collaborative team with shared codebases and code review culture

Education
Bachelor's degree in Computer Science, Engineering, or related field preferred, or equivalent practical experience

Technical Skills
Frontend: React, TypeScript, component architecture, state management

Backend: Python, REST APIs, web frameworks

Database: Experience with SQL and NoSQL databases

Cloud: Google Cloud Platform or similar

Tooling: Git, CI/CD, testing frameworks

Preferred Experience
Data visualization and reporting: experience building charts, dashboards, or analytics surfaces

Financial or fintech products, including dashboards, reporting, or transaction workflows

Design system or component library ownership

Experience with internal tooling for operations or compliance teams

Familiarity with domain-driven design or clean architecture patterns

Why This Role Matters
Direct Impact: You'll be a core part of a small, high-output engineering team with real ownership over the product experience

Frontend Ownership: Lead the frontend architecture and set the bar for quality across our interfaces

Complex Problems: Work on sophisticated payment workflows that few engineers get to build

Team Building: Establish frontend engineering practices and culture as we scale

Financial Innovation: Build the interfaces that make financial infrastructure accessible to our clients

What We Offer
Competitive compensation with equity in a growing fintech company.

Remote-first culture with flexible working arrangements

Small team, big impact — your work directly supports Astra’s ability to scale responsibly

Professional growth opportunities in compliance and risk management

Mission-driven — build infrastructure that powers financial innovation while meeting the highest regulatory standards

Remote Work and Culture
Astra is a remote-first company hiring only within the U.S. We value thoughtful collaboration, clarity, and initiative. We’re proud to be an equal opportunity employer and are committed to building a diverse and inclusive team.

How to Apply
We're looking for engineers who care about product quality as much as technical craft. If you're excited by the challenge of making complex financial systems feel simple to use, and you want real ownership on a small team, we'd love to hear from you.