# Senior Software Engineer, Backend

**Company:** [Posh](https://hotfix.jobs/companies/posh)
**Location:** New York, NY
**Role:** Backend Engineering
**Salary:** $200k – $225k/yr
**Experience:** 5+ years
**Skills:** Java, Node.js, Postgres, MongoDB, AWS, Terraform, Docker, APIs, Distributed Systems, Event-Driven Architecture, Data Modeling, Infrastructure As Code
**Posted:** 2026-08-18

> The Senior Backend Engineer will build, scale, and operate production backend services and APIs, taking ownership from design through on-call. The role requires 5+ years of experience with distributed systems, data modeling, cloud infrastructure, and containerized deployments, plus strong technical communication and mentoring skills.

## Job Description

## Responsibilities
- Build and maintain backend services and APIs powering the platform.
- Own backend systems end to end, from design through deployment and on-call.
- Address performance and reliability issues as usage grows, evolving production systems under load.
- Instrument systems and design security into services from the start.
- Build data models and pipelines that provide actionable insights.
- Contribute to design reviews, code reviews, and cross-team technical decisions.
- Mentor early-career engineers through code review, pairing, and feedback.
- Participate in technical interviews and calibration.

## Requirements
- 5+ years of backend engineering experience shipping production systems in fast-paced environments.
- Deep expertise in APIs, data modeling, distributed systems, and event-driven architecture.
- Proficiency with relevant backend technologies such as Java, Node.js, PostgreSQL, MongoDB, and AWS or similar technologies.
- Experience with Infrastructure as Code, such as Terraform.
- Experience deploying containerized applications.
- Experience scaling systems operationally and evolving live architecture under load.
- Ability to explain and defend technology tradeoffs to engineering, product, and business stakeholders.
- GitHub profile or portfolio of past projects.

## Nice to Have
- Experience at a consumer, social, or marketplace company.

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**Apply:** https://hotfix.jobs/jobs/7ef044b3-cf2c-422f-a64c-f8d9b4047459
**Canonical:** https://hotfix.jobs/jobs/7ef044b3-cf2c-422f-a64c-f8d9b4047459