Senior Full Stack Engineer (Back-End Focused)

We’re looking for a Senior Full Stack Engineer (Back-End Focused) who will be one of the first technical hires at Monstro. This is a pivotal opportunity to lay the technical foundation of our platform, shape the overall core architecture, and become a founding member of our engineering team. You’ll work closely with our design, product, and executive teams to translate vision into scalable solutions, define technical requirements, and make critical decisions on Monstro’s technical stack, infrastructure, and security.

While you’ll contribute across the stack, your primary strength should be back-end engineering - owning services, APIs, data pipelines, and system scalability. You’ll also drive infrastructure, cloud deployments, and DevOps best practices, ensuring Monstro is built for security, resilience, and global scale.

The ideal candidate thrives in ambiguity, enjoys tackling complex challenges, and is passionate about building innovative technology that disrupts traditional financial systems. This role offers significant ownership, the ability to directly influence the product roadmap, and the chance to grow into a technical leadership position as Monstro scales.

Monstro, headquartered in New York, is an innovative AI-enhanced fintech company redefining personal finance management through a global financial platform. Our platform offers individuals a comprehensive view of their entire financial, legal, and tax life, delivering actionable insights, tailored recommendations, and the ability to take direct action.

For financial institutions, Monstro unlocks unparalleled access to personalized customer data and insights. Leveraging Monstro’s data-driven approach allows institutions to maximize revenue, boost customer retention, and attract new clients while lowering acquisition costs. By efficiently servicing clients across all wealth tiers and providing direct, actionable solutions, Monstro is transforming the financial services landscape. We are democratizing access to high-quality financial advice, enabling institutions to optimize operations, empower their clients, and achieve measurable growth in an evolving digital economy.

Architecture & Infrastructure

• Design and implement back-end systems, APIs, data pipelines, and integrations, ensuring high performance and scalability.
• Lead decisions around architecture, infrastructure, and cloud strategy.
• Own infrastructure-as-code, CI/CD pipelines, and DevOps practices.
• Establish best practices for monitoring, observability, availability, and disaster recovery.

Cloud & Security

• Build secure, compliant systems on AWS, GCP, or Azure, with experience in multi-region/global deployments.
• Implement strong security practices for a fintech-grade environment (encryption, authentication, access controls, data privacy).
• Stay ahead of evolving regulatory and compliance requirements.

Prototyping to Production

• Transition design prototypes into functional, production-ready solutions, focusing on reliability, performance, and scale.
• Contribute to front-end development as needed, but primarily own the back-end stack.

AI/ML Integration

• Work with data and product teams to integrate AI/ML features into core systems.
• Define and implement infrastructure required to support AI-driven functionality at scale.

Collaboration & Iteration

• Partner with design, product, and executive teams to align technical execution with product vision and business objectives.
• Iterate on platform development based on user feedback and evolving business needs.

Future Team Growth

• Help recruit and mentor engineers, building a collaborative, high-performing technical culture as Monstro scales.

Experience

• 8+ years of software engineering experience, with significant focus on back-end systems.
• Proven track record in architecting and scaling cloud-native systems (AWS, GCP, or Azure).
• Strong experience with DevOps practices: CI/CD pipelines, containerization (Docker, Kubernetes), infrastructure-as-code (Terraform, CloudFormation).
• Expertise in databases (SQL and NoSQL), data pipelines, and performance optimization.
• Experience designing and securing APIs and microservices.
• Exposure to AI/ML infrastructure or data-driven platforms is a plus.
• Early-stage startup experience strongly preferred.

Technical Skills

• Proficiency in one or more back-end programming languages (Node.js, Python, Java, etc.) with full stack capability.
• Deep knowledge of distributed systems, scalability, and cloud deployments.
• Some familiarity with front-end frameworks (React, Next.js) and willingness to contribute as needed (or a quick learner who can pick up the basics!)
• Strong knowledge of networking, monitoring, and observability tools.
• Understanding of security and compliance standards in regulated industries (fintech ideal).

Soft Skills

• Hands-on builder who thrives in ambiguity.
• Proactive problem-solver who can make independent technical decisions.
• Excellent communicator who collaborates effectively with cross-functional teams.
• Passion for Monstro’s mission to democratize financial access and disrupt fintech.

• Ownership and Impact: As one of the first engineers, you’ll have unparalleled ownership of Monstro’s technical direction and the opportunity to shape the platform from day one.
• Collaborate with Experts: Work closely with an accomplished executive team that has a proven history of scaling successful startups to significant exits.
• Scalability and Growth: Be part of a high-growth startup, with the chance to grow into a leadership position as the company scales.
• Mission-Driven: Join a company focused on democratizing access to financial management and education for individuals and institutions globally.
• Innovative Environment: Be at the forefront of fintech innovation, creating groundbreaking solutions that redefine how people interact with their finances.

Base is between 180k-220k + equity 

If you’re passionate about building transformative technology in a mission-driven company and thrive in a startup environment, we want to hear from you!