Backend Jobs in United States

There are 5,621 open Backend jobs in United States on freehire right now. 781 of them were posted recently. The skills employers ask for most often are api, cloud and ai.

Salary

CurrencyPeriod25thMedian75thPostings
USDyear$166,500$192,050$215,0501,397
USDhour$62$70$7827

From postings that disclose pay. Currencies are counted separately, never converted.

Most requested skills

  • api 44%
  • cloud 42%
  • ai 38%
  • python 35%
  • aws 33%
  • java 32%
  • distributed-systems 24%
  • kubernetes 23%

How the work is done

  • Remote 860 · 15%
  • Hybrid 736 · 13%
  • Onsite 361 · 6%

Visa sponsorship offered in 39% of the 1,593 postings that state a position on it.

Seniority

  • Senior 3,093
  • Lead 433
  • Staff 396
  • Principal 105
  • Middle 47
  • C-level 41

Who is hiring

  • 501-1000 employees 920
  • 1000+ employees 914
  • 51-200 employees 584
  • 11-50 employees 284
  • 201-500 employees 45
  • 1-10 employees 14
5,621 jobs
polymarket
last month

Backend Engineer, Markets

Open 31d On-siteNorth America
United States

Builds and maintains real-time automation pipelines for prediction markets, integrating external data (sports/news APIs) to ensure accurate market creation, updates, and resolution. Focuses on reliability, debugging, and end-to-end ownership of backend systems for a fast-growing crypto-adjacent platform.

AI API Automation Claude Code Cloud +6 skills
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ACI Solutions
last month

Senior Backend Developer

Open 24d North AmericaFull-timeSenior
United States

Designs and maintains backend services for a U.S. government contractor, ensuring compliance with security clearances and federal contract requirements.
Affirm
last month

Senior Backend Engineer, Traffic Mesh (Remote)

Open 32d North AmericaSenior H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Build and maintain backend systems for Affirm’s financial infrastructure using Python or Kotlin, AWS, MySQL, and Kubernetes.

AWS Kotlin Kubernetes MySQL Python
169 000 – 219 000 $
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Qrypt
last month

Senior Backend Software Engineer (AI Native)

Open 20d HybridNorth AmericaSenior
United States

Build and own Rust-based backend services that deliver quantum entropy and keys, using AI-assisted tooling to ensure reliability and security at scale.

Agentic AI AI API C++ Cryptography +6 skills
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Qrypt
last month

Backend Software Engineer (AI Native)

Open 20d HybridNorth America
United States

Build and ship Rust-based backend services that deliver quantum entropy and keys, powering a secure entropy-as-a-service platform while using AI-assisted tooling to accelerate development.

Agentic AI AI API C++ Cryptography +6 skills
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WeaveGrid
last month

Software Engineer Backend

Open 32d RemoteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Builds and maintains cloud-native backend systems for distributed energy resource management, integrating with device APIs, utilities, and scheduling optimization to support grid electrification and climate resilience.

AI API AWS CircleCI Cloud +10 skills
116 000 – 165 000 $
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Microsoft
last month

Software Engineer II and/or Senior Software Engineer - Backend

Open 31d On-siteNorth AmericaSenior
United States

Build and scale Azure Monitor’s globally distributed backend systems for telemetry collection, storage, and AI-assisted observability at hyperscale.

Agentic AI AI Analytics Anomaly Detection API +22 skills
102 100 – 202 200 $
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whoop
last month

Senior Software Engineer (Backend, Core)

Open 32d On-siteNorth AmericaSenior H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Build and scale the backend systems that power WHOOP’s wearable health platform, using Java, APIs, and cloud-native architectures to deliver fitness, sleep, and recovery insights.

AI API Api Design Cloud Cloud Native +7 skills
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C1 Green Chemicals AG
last month

Staff Backend Software Engineer

Open 24d North AmericaFull-timeStaff
United States

Staff Backend Software Engineer Location: Sunnyvale, California, United States Department: Software At Carbon, our mission goes beyond 3D printing. We are enabling creators everywhere to make what the world needs,…

Cloud C++ DNS Embedded Linux Firewall +10 skills
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Brillio
last month

Java Backend Developer (Banking, CIAM)- R01568751

Open 19d RemoteNorth America
United States

Build and maintain scalable Java backend services for banking clients, focusing on CIAM/IAM systems using Spring Boot, Kafka, and microservices.

Agile API CI/CD Design Thinking Docker +13 skills
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Dexian DISYS
last month

C++ Software Engineer - Distributed Systems & Backend

Open 22d North America
United States

Build scalable, asynchronous backends for wearable devices using C++ and distributed systems.

C++ Distributed Systems
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RSM US LLP
last month

Temporary Senior Backend Lead Developer – Capital Markets Technology Transformation

Open 32d North AmericaContractLead H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Lead backend engineering for a capital-markets client’s transformation, designing scalable APIs and microservices in .NET/C# while mentoring teams and modernizing legacy systems.

Agile Angular API Api Documentation CI/CD +22 skills
48 – 72 $ / hr
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Alpaca Health
last month

Senior Backend Architect: AI-Driven Healthcare Platform

Open 32d North AmericaSenior
United States

Architect and build the backend platform for an AI-driven healthcare workflow system, including data models, APIs, billing engines, and integrations with healthcare vendors and Medicaid systems.

AI API HubSpot
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Aermor-LLC
last month

Senior Software Engineer - Backend & Systems (Onsite VA)

Open 32d North AmericaSenior
United States

Senior backend engineer in Virginia Beach building APIs and services in a Linux environment, contributing to system design, testing, and Agile workflows.

Agile API Linux
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Jobtailor
last month

Senior Software Engineer, Backend (Agentic AI)

Open 32d North AmericaFull-timeSenior
United States

Design and operate agentic AI systems that reason over time-series data and hardware context, building APIs, distributed systems, and evaluation suites in Go/Python/Rust.

Agentic AI AI API Cloud Distributed Systems +7 skills
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Jobtailor
last month

Backend Developer (Java/Kotlin) – TDD, CD & Cloud

Open 32d North America
United States

Backend Developer building customer experiences using Java/Kotlin, TDD, CD, and cloud services

Agile CI/CD Cloud Design Patterns Docker +4 skills
100 000 – 160 000 $
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Cognizant
last month

Senior Backend Architect – Federated Identity & Vehicle Platform

Open 32d North AmericaSenior
United States

Designs and refactors backend services for federated identity and a multi-entity vehicle management system, integrating Firebase Auth and modernizing APIs.

API Authentication Firebase
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Jobtailor
last month

Senior Backend Developer – Node.JS, AWS

Open 32d North AmericaSenior
United States

Build and maintain Node.js serverless applications on AWS Lambda, integrating contact center tools like Amazon Connect and Amazon Lex with enterprise systems and APIs.

API Authentication Automation AWS CI/CD +20 skills
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SmartCommerce
last month

Senior Backend Engineer: AI-Driven Data Pipelines (Remote)

Open 32d North AmericaSenior
United States

Senior Backend Engineer builds and maintains scalable commerce systems and data pipelines using Airflow, Parquet, and Redshift, with PHP, Node.js, MySQL, Redis, Kafka, and AWS.

AI Airflow AWS ETL Kafka +7 skills
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Realtor.com Careers
last month

Senior Software Engineer, Backend

Open 32d North AmericaSenior
United States

Senior backend engineer building scalable real-estate platforms that connect buyers, sellers, and agents using Python, FastAPI, React, Node.js, GraphQL, and AWS.

AI Airflow Analytics AWS Cloud +12 skills
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