Senior Software Engineer — Scalable FinTech Platforms

Selby Jennings; New York (NY); On-site; USD 120,000 - 180,000; Full time

Job summary

Selby Jennings is seeking a Software Engineer to design, build, and maintain business-critical applications used across multiple teams. This hands-on role involves collaborating with engineers and business stakeholders to deliver scalable software and optimize internal workflows.

The ideal candidate brings 5+ years of production experience and proficiency in Python, APIs, and cloud environments. The role emphasizes building full-stack solutions, APIs, and modern UIs, with a focus on reliability

Qualifications

• 5+ years of experience building and supporting production software applications.
• Strong full-stack engineering skills with modern frontend and backend technologies.
• Hands-on experience with Python, APIs, databases, and cloud environments.
• Experience designing scalable, maintainable software solutions.
• Financial services, asset management, capital markets, trading, or investment technology experience is a plus.

Responsibilities

• Building and enhancing full-stack applications and internal platforms.
• Developing scalable APIs, backend services, and microservices.
• Creating modern, responsive user interfaces.
• Integrating internal and external data sources.
• Participating in architecture, design, testing, and deployment activities.
• Improving system performance, reliability, and maintainability.
• Contributing to cloud infrastructure and CI/CD initiatives.
• Working closely with stakeholders to translate business requirements into technical solutions.

Skills

5+ years experience

Full-stack engineering

Python

APIs

Cloud environments

Tools

Python

FastAPI

React

TypeScript

PostgreSQL

SQL

AWS

Docker

Kubernetes

REST APIs

Microservices

Git / CI/CD

Job description

Selby Jennings is seeking a Software Engineer to design, build, and maintain business-critical applications used across multiple teams. This hands-on role involves collaborating with engineers and business stakeholders to deliver scalable software and optimize internal workflows.

The ideal candidate brings 5+ years of production experience and proficiency in Python, APIs, and cloud environments. The role emphasizes building full-stack solutions, APIs, and modern UIs, with a focus on reliability