Junior Real-Time Backend Engineer – Platform Systems (NYC)

Kastel Group; New York (NY); On-site; USD 125,000 - 175,000; Full time

Benefits offered by this job

401(k) matching

Healthcare contribution

Job summary

First Roles is seeking a Junior Software Engineer – Backend / Platform Systems in New York, NY. You will join a small, technically skilled team building real‑time pricing and trading platforms, with hands‑on backend, data infrastructure, and ML model integration responsibilities.

You will contribute to production systems, data pipelines, and tool development while learning cloud technologies in a fast‑growing fintech environment. Onsite five days per week in Manhattan.

Qualifications

• 0–2 years of professional software engineering experience, preferably focused on backend or systems development.
• Bachelor's degree in Computer Science or a related STEM discipline.
• Hands‑on experience with Python and backend software development.
• Experience building or maintaining backend systems, data integrations, pipelines, APIs, or internal engineering tools.

Responsibilities

• Maintain and enhance backend systems supporting real‑time pricing, bidding, and transaction processing.
• Develop and manage data integrations, pipelines, and mapping workflows across multiple data sources.
• Build internal tools and automation solutions to improve platform performance and operational efficiency.
• Troubleshoot production issues and implement reliable, scalable solutions.
• Integrate existing machine learning models into production applications and workflows.
• Contribute to backend APIs, data infrastructure, and platform enhancements.
• Collaborate directly with senior engineers on technical challenges and system improvements.
• Participate in two‑week development sprints and contribute across multiple engineering functions.

Skills

Python

Backend development

Data pipelines

Production systems

Education

Bachelor's degree in Computer Science

Tools

AWS

GCP

Job description

First Roles is seeking a Junior Software Engineer – Backend / Platform Systems in New York, NY. You will join a small, technically skilled team building real‑time pricing and trading platforms, with hands‑on backend, data infrastructure, and ML model integration responsibilities.

You will contribute to production systems, data pipelines, and tool development while learning cloud technologies in a fast‑growing fintech environment. Onsite five days per week in Manhattan.