Senior Full-Stack Engineer

About Monstro

Monstro is the operating system for governed financial intelligence. We build governance and intelligence infrastructure that enables artificial intelligence to operate safely, explainably, and at institutional scale.

We exist because the level of financial guidance historically available to a small group should be accessible to many more people. By combining AI with deep institutional infrastructure, we help financial institutions deliver more personalized, responsible, and life-changing financial support to millions of individuals.

We're building mission-critical systems in a highly regulated domain, and we care deeply about doing it right. If you're motivated by meaningful problems, high standards, and shaping infrastructure that improves financial outcomes, you'll feel at home here.

About the Role

Monstro is hiring a Senior Full Stack Engineer with a backend focus to help build and scale the client-facing systems that power our platform. This role owns critical backend services that handle sensitive financial data, where reliability, security, and performance are essential.

What You'll Do

Backend Engineering

Design, build, and maintain backend services that power Monstro's consumer experience

Work across our stack (Python, Node.js, and Go), selecting the right tool for each problem

Build robust APIs serving mobile and web clients while integrating with financial institutions and third-party servicesSystem Architecture & Scalability

Architect systems that scale gracefully as our user base grows

Identify bottlenecks and implement caching strategies (Redis, CDN, application-level caching)

Optimize query performance and tune container-based applications

Design for resilience with failover strategies, retry logic, and graceful degradationInfrastructure & DevOps

Containerize and orchestrate services using Docker and Kubernetes

Collaborate with platform teams on infrastructure decisions

Contribute to CI/CD pipelines and ensure smooth, reliable deployments

Understand and work across the full SDLC, from local development through production observabilityData & Integrations

Work with relational and NoSQL databases, partnering with data engineers on schema and data models

Build integrations with banking systems, payment processors, and financial data providers

Implement event-driven architectures and message queues where appropriateSecurity, Quality & Team Collaboration

Build systems with security as a first-class concern, including authentication, authorization, encryption, and audit logging

Ensure systems meet fintech regulatory and compliance requirements

Guide and develop junior and mid-level engineers through code reviews, pairing sessions, and technical coaching

Partner closely with frontend engineers, product managers, and designers to deliver cohesive features

Participate in architectural discussions and incident response, contributing to a culture of continuous learning and technical excellenceWhat Success Looks Like

Backend systems reliably support a growing consumer user base with minimal incidents or regressions

Sensitive financial data is handled securely, correctly, and in compliance with regulatory requirements

APIs and services are well-designed, performant, and easy for mobile and web clients to consume

Infrastructure and deployment processes enable safe, frequent releases

Junior and mid-level engineers are unblocked, supported, and improving through mentorship and collaborationWhat We're Looking For

7+ years of professional software engineering experience

Strong proficiency in at least two of the following: Python, Node.js, Go

Hands-on experience with Docker and Kubernetes in production environments

Solid understanding of the full SDLC and modern development toolchains

Experience scaling and performance-tuning container-based applications

Strong understanding of caching patterns and strategies

Familiarity with API design, microservices patterns, and distributed systems

Experience with test-driven development and test automation

Familiarity with cloud platforms such as AWS, GCP, or Azure

Clear communicator who takes ownership, moves with urgency, and is passionate about building high-quality softwareWhy Monstro?

Ownership & Impact: Shape the future of AI-powered finance-building a category-defining product used by consumers and institutions around the world.

Elite Team: Join a team with leadership that has a track record of scaling companies from early stage to major exits.

Principles-Driven Culture: Work in a culture that values speed, ownership, and impact-what most companies achieve in 90 days, we do in 45.

Comprehensive Compensation Package: Competitive salary, equity, and robust benefits package, including paid health, vision, dental, and disability coverage.

Note: This role will be hybrid in office for those in the NYC metro or remote for those in the Denver metro area (but with the expectation of periodic travel to our NYC office)

Compensation Range (New York City): $162,000 - $190,000

Compensation Range (Denver Metro): $142,000 - $177,000

*The posted range reflects the base salary for this role across the market ranges for each location. Final compensation will depend on a variety of factors, including experience, skills, internal leveling, and market conditions, and will be offered within the stated range in accordance with applicable pay transparency laws.

Ready to Build With Us?

If you're excited to contribute to a high-bar team building something meaningful, we love to hear from you!