Senior Backend Engineer - Fintech, Microservices (NYC Hybrid)

Guarantors Technology Service Inc; New York (NY); Hybrid; USD 170,000 - 195,000; Full time

Benefits offered by this job

Health savings account with employer

Generous PTO and paid holidays

401(k)

Paid parental leave

Company sponsored short and long term.

Job summary

TheGuarantors is seeking a Software Engineer to own backend features for deal flow and underwriting in a hybrid NYC setup. You’ll design, build, and operate scalable services, migrating toward microservices while mentoring peers.

Bring 5+ years of backend-focused software engineering with Node.js/NestJS/TypeScript and Go, REST/GraphQL APIs, and PostgreSQL. Bachelor’s in CS or related field; Master’s preferred.

Qualifications

• 5+ years of software engineering experience with a strong backend focus.
• Experience with Node.js, NestJS, TypeScript, Go in production, including designing and operating APIs (REST/GraphQL) and relational data models (PostgreSQL).
• Strong understanding of distributed systems and micro‑service architecture, including migrating from monolithic systems.
• Demonstrated ability to manage complex features end‑to‑end and collaborate with product and cross‑functional stakeholders.
• Bachelor’s degree in Computer Science or related field (Master’s degree preferred), or equivalent practical experience.

Responsibilities

• Own a slice of the product end‑to‑end—from requirements through development, QA, and production.
• Build and extend backend services and React frontends within a micro‑service architecture.
• Analyze, review, or maintain services, APIs, and data models to support business needs.
• Partner with product managers, QA, designers, and engineers across teams to align priorities.
• Communicate updates, risks, blockers, and recommendations clearly and proactively.

Skills

Node.js

NestJS

TypeScript

Go

REST/GraphQL

PostgreSQL

Distributed systems

Microservices

Education

Bachelor’s degree in Computer Science or related field

Master’s degree preferred

Job description

TheGuarantors is seeking a Software Engineer to own backend features for deal flow and underwriting in a hybrid NYC setup. You’ll design, build, and operate scalable services, migrating toward microservices while mentoring peers.

Bring 5+ years of backend-focused software engineering with Node.js/NestJS/TypeScript and Go, REST/GraphQL APIs, and PostgreSQL. Bachelor’s in CS or related field; Master’s preferred.