Backend Developer Jobs in Illinois

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41 - 60 of 226 Jobs

Python Backend Engineer (React) - Remote

FlairTech Solutions

•

Remote

Contract

Role: Python with React Consultant Location: Remote Duration: Long Term Develop and maintain user interfaces using React.js . Design and build RESTful APIs and server-side logic using Python Experience using CI/CD tools Understanding of cloud platforms (Google Cloud Platform preferred, then Azure, then AWS) Integrate with databases (BigQuery, Spanner, MongoDB, etc)
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Posted 1 hour ago | Updated moments ago

Principal Cybersecurity Engineer

NuLeap

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Remote or US

Third Party

Job Summary (List Format): - Lead the design and implementation of secure, scalable, and high-performance cloud-based systems. - Architect and develop backend systems using Rust (Tokio, Actix, Axum, Rocket) and Scala (Akka, ZIO, Cats, Play). - Ensure secure execution environments utilizing WebAssembly (WASM). - Employ extensive AWS services (Lambda, ECS, S3, API Gateway, CloudFront, DynamoDB, GuardDuty, WAF, Security Hub, KMS) for cloud infrastructure and security. - Implement and enforce AP
Posted 29 days ago | Updated 6 days ago

Java Microservice Lead Developer

Okaya Inc

•

Rosemont, Illinois, USA

Full-time

Hi, Greetings of the Day! Position Title : Java Microservice Lead Developer Location: Plano, TX Experience: 8 to 15 Job Description Java Technical Lead Must Have Technical/Functional Skills Have strong expertise with Java, Spring Boot Microservice. Proficiency with Spring Boot microservice development and integration. Experience in EKS and Docker. Experience in Kafka message broker. Experience in Log4j, JUnit testing or any other unit testing framework. Experience in NoSQL Database like MongoDB.
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Posted 43 days ago | Updated 12 hours ago

Senior React Developer (10+ Years Experience) - Remote

URSI Technologies Inc.

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Remote

Third Party, Contract

Position Senior React Developer (10+ Years Experience)Location RemoteDuration 1+ Year (Extendable) Job Description: We are seeking a highly skilled Senior React Developer with over 10 years of experience in frontend development. The ideal candidate will have deep expertise in JavaScript, React.js, TypeScript, and modern UI/UX principles. You ll be responsible for leading frontend architecture, mentoring developers, collaborating with cross-functional teams, and delivering high-performance, scal
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Posted 42 days ago | Updated 1 day ago

Android Developer

Vuesol Technologies Inc.

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Chicago, Illinois, USA

Full-time

Job Title: Android Developer Location: Onsite Chicago IL Duration : Long Term Job Description: Key Responsibilities:Design, develop, and deploy advanced Android applications in alignment with business needs.Collaborate with cross-functional teams including UI/UX designers, backend engineers, QA, and product managers.Ensure the performance, quality, and responsiveness of applications across a wide range of Android devices.Identify and correct bottlenecks and fix bugs to improve application reliab
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Posted 16 days ago | Updated 2 hours ago

Web Developer

Pozent

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Remote or Woburn, Massachusetts, USA

Contract

6 month plus contract opportunity Remote position - CST Overview We are seeking a skilled and reliable Web Developer / Backend Engineer to provide ongoing support and project-based development across our digital ecosystem. This includes building new websites, updating existing websites, and handling server-side tasks and remediation. Familiarity with Microsoft Azure and Kentico CMS is essential. Background Our organization operates multiple web properties and digital tools hosted primarily in
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Posted 48 days ago | Updated moments ago

Software Engineer, Backend

West Coast Consulting LLC

•

Remote

Full-time

Job Description REMOTE JOB DESCRIPTION We're looking for a skilled Senior Backend Engineer (Contractor) to join our GraphQL API platform team. In this role, you'll focus on migrating legacy Python services to Go within our GraphQL API services. Experience with GraphQL, including GraphQL Federation and Apollo Router, is a strong plus. You'll use internal tools and processes developed by the GraphQL team to accelerate our migration from Python to Go. We're seeking someone who thrives in a fas
Posted 40 days ago | Updated 4 hours ago

Accessibility Web Developer (Mobile + Web)

Allwyn Corporation

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Remote

Contract, Third Party

NOTE:This is 4 month contract only. 40 Hrs / per week. We are looking for a skilledFront-End Developerwho can contribute across bothmobile and web (.com)platforms. The ideal candidate will have hands-on experience withAngular and Ionic frameworks, and a strong understanding ofADA complianceto ensure accessibility standards are met across all digital experiences. Responsibilities: Develop and maintain responsive and accessible applications across mobile and web platforms.Collaborate with UI/UX
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Posted 30 days ago | Updated 2 days ago

Backend Lead (Java, Spring Boot, MongoDB)

Master Compliance Inc

•

Bolingbrook, Illinois, USA

Contract

Title: Backend Lead (Java, Spring Boot, MongoDB) Onsite in Bolingbrook, IL) NOTE: LinkedIn ID is mandatory for submission. Job Description:We are seeking a Backend Technical Lead with expertise in Java, Spring Boot, and MongoDB to lead a team of developers. The ideal candidate will provide technical guidance, oversee high-quality code development, and contribute to full software lifecycle activities including design, development, testing, and deployment. Key Responsibilities:Lead and mentor a te
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Posted 2 days ago

Backend Software Engineer

Pinterest, Inc.

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Remote or San Francisco, California, USA

Full-time

About Pinterest: Millions of people around the world come to our platform to find creative ideas, dream about new possibilities and plan for memories that will last a lifetime. At Pinterest, we're on a mission to bring everyone the inspiration to create a life they love, and that starts with the people behind the product. Discover a career where you ignite innovation for millions, transform passion into growth opportunities, celebrate each other's unique experiences and embrace the flexibility
Posted 51 days ago | Updated 7 hours ago

Software Engineer, Backend

West Coast Consulting LLC

•

Remote

Contract

Job Description Remote In this role, you'll focus on migrating legacy Python services to Go within our GraphQL API services. Experience with GraphQL, including GraphQL Federation and Apollo Router, is a strong plus. You'll use internal tools and processes developed by the GraphQL team to accelerate our migration from Python to Go. We're seeking someone who thrives in a fast-paced environment, excels at solving complex problems, and collaborates effortlessly across teams. Responsibilities inclu
Posted 14 days ago | Updated 4 hours ago

Principal Backend Engineer, Materia AI

Thomson Reuters U.S. Inc.

•

Remote or Eagan, Minnesota, USA

Full-time

Principal Backend Engineer, Materia AI Are you excited about building AI-driven software that redefines how professionals work? Join a dynamic and highly skilled team at Thomson Reuters, where we combine the agility and innovation of a startup with the stability and resources of a global leader. As a Lead Backend Engineer, you will play a pivotal role in developing AI-powered systems that enhance accounting workflows through automation, intelligence, and seamless orchestration. About the Role:
Posted 45 days ago | Updated 7 hours ago

Senior Backend Software Engineer

Pinterest, Inc.

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Remote or San Francisco, California, USA

Full-time

About Pinterest: Millions of people around the world come to our platform to find creative ideas, dream about new possibilities and plan for memories that will last a lifetime. At Pinterest, we're on a mission to bring everyone the inspiration to create a life they love, and that starts with the people behind the product. Discover a career where you ignite innovation for millions, transform passion into growth opportunities, celebrate each other's unique experiences and embrace the flexibility
Posted 51 days ago | Updated 7 hours ago

Senior Python Developer / Remote / Cloud & Microservices

Motion Recruitment Partners, LLC

•

Remote or San Francisco, California, USA

Full-time

Job Description Join a globally recognized leader in the entertainment and media industry for a fully remote, long-term contract role focused on impactful backend development. Known for its cutting-edge technology, strong developer-first culture, and commitment to work-life balance, this company is looking to bring on a Senior Python Backend Engineer to join its high-impact platform team. You'll be contributing to the architecture and development of highly scalable backend systems, APIs, and s
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Posted 15 days ago | Updated 4 hours ago

Core Java and SQL / Remote / Construction Planning Software

Motion Recruitment Partners, LLC

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Remote or Boston, Massachusetts, USA

Full-time

Join a small, agile team building a highly scalable, cloud-based backend powering complex data-driven web applications. This is a great opportunity for a backend engineer with strong Java and SQL expertise who thrives in a startup-like environment and enjoys tackling performance-heavy challenges. This is an opportunity to work side-by-side with the Chief Software Architect on a lean team driving architecture and core functionality. You'll be writing highly concurrent Java code and building syste
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Posted 58 days ago | Updated 4 hours ago

Senior Python Developer / AWS / Fully-remote

Motion Recruitment Partners, LLC

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Remote or Los Angeles, California, USA

Full-time

Job Description This is a fully remote, long-term contract opportunity with a major global enterprise operating in the entertainment and media space. The company is known for its innovative tech stack, strong developer culture, and commitment to employee well-being. They're currently seeking a Senior Python Backend Engineer to join their high-impact platform team working on scalable backend systems, APIs, and serverless cloud infrastructure. This is a rare opportunity to work behind-the-scenes
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Posted 16 days ago | Updated 4 hours ago

.Net Backend Architect / Only on W2

FutureTech Consultants LLC

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Remote

Contract

Hi, Hope you are doing good, this is Rajeev from FutureTech Consultants, LLC and I have a job opening with our direct client. Please have a look at the below job description and let me know your interest. Please share me the latest copy of your resume. Role: .Net Backend Architect Location: Remote Duration: Long Term Contract Mode of Interview: Coding Test + 30 mins video call Must Have Skill: C++, C#, .Net Core Architecture, AWS Cloud, Trading Platforms, Futures Commodity Commissions Market (F
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Posted 6 days ago

Principal Engineer, Backend

Harman International

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Texas, USA

Full-time

A Career at HARMAN As a technology leader that is rapidly on the move, HARMAN is filled with people who are focused on making life better. Innovation, inclusivity and teamwork are a part of our DNA. When you add that to the challenges we take on and solve together, you'll discover that at HARMAN you can grow, make a difference and be proud of the work you do every day. About the Role Join our team as a Backend Engineer and help us build the backend systems for a revolutionary new music discov
Posted 41 days ago | Updated 7 hours ago

Lead C++ Developer with .Net

Photon

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Remote

Contract, Third Party

Lead C++ Developer with C# and .Net Core Remote We are seeking a hands-on Lead Backend Engineer to help build a new Futures Commodity Commissions Market (FCM) platform a greenfield, regulated financial trading product focused on binary sports prediction markets. This is a rare opportunity to shape the architecture and implementation of a federally regulated financial system from the ground up. You'll be responsible for designing and developing core backend services for a compliant, low-latency t
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Posted 35 days ago | Updated 22 hours ago

.Net Backend Lead

Photon

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Remote

Contract, Third Party

.Net Backend Lead Developer Remote We are seeking a hands-on Lead Backend Engineer to help build a new Futures Commodity Commissions Market (FCM) platform a greenfield, regulated financial trading product focused on binary sports prediction markets. This is a rare opportunity to shape the architecture and implementation of a federally regulated financial system from the ground up. You'll be responsible for designing and developing core backend services for a compliant, low-latency trading platfo
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Posted 48 days ago | Updated 22 hours ago