Backend jobs in illinois

Remote or Maumee, Ohio

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Today

Job Summary: The Senior Back-End Software Developer will be responsible for designing and developing scalable, secure, and high-performance back-end web-based applications and services, including maintenance, testing, and debugging. In addition to development, this individual will collaborate with a team of developers and occasionally assist junior developers in all facets of software development. Job Goals: Contribute to all stages of the software development lifecycle, from feasibility, soluti

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Full-time

Compensation information provided in the description

Senior Java Backend Developer

Remote

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Today

Job Title: Senior Java Backend Developer Location: Remote Candidate must be from LATAM Job Overview: We are looking for an experienced Senior Java Backend Developer to design, develop, and maintain scalable, high-performance backend applications and distributed systems. The ideal candidate will have strong hands-on experience with Java, Spring Boot, REST APIs, microservices, SQL/NoSQL databases, messaging systems, AWS, Docker, and Kubernetes, along with a solid understanding of data structures,

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Third Party

Back-end developer, Java

Remote

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Today

Senior Back-End Developer (Cloud & IoT) We're looking to connect with experienced Back-End Engineers who enjoy building the cloud platforms behind connected IoT products, smart devices, and real-time video applications . We're looking for engineers with experience in: -Java backend development -AWS cloud services & scalable distributed systems -RESTful APIs powering mobile applications and connected devices -Kubernetes, DynamoDB & Git -Secure, high-performance cloud services -Automated testing a

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Contract

$80

W2 - Backend Engineer || Chicago, IL

Chicago, Illinois

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Today

Backend Engineer Location : Chicago, IL (onsite 4 days/week- 1 day remote) Start Date : ASAP Duration : 6+ Months 8+ years backend engineering exp PHP/Spryker Cloud Commerce OS REST/GraphQL API Design Middlware/iPaaS integration Spryker state machines ostgresSQL/MySQL Redis, Elasticsearch CI/CD (Azure Pipelines/GitHub Actions), Docker, Kubernetes

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Contract

$55

Backend Developer - HIT

Remote or Natchitoches, Louisiana

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Today

job summary: ROLE AND RESPONSIBILITIES ? Collaborate with cross-functional teams to define, design, and ship new features. ? Conduct code reviews and provide constructive feedback via Pull Requests (PRs). ? Implement backend functionalities and business logic to support the business processes, ensuring accuracy and compliance with regulatory requirements. ? Works independently and within a team on special nonrecurring and ongoing projects. ? Optimize applications for maximum speed and sca

Contract

USD70 - USD81

Senior Backend Engineer // Fully Remote // TypeScript Node.JS

Remote

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Today

A fast-growing B2B infrastructure platform is expanding its engineering team and looking for a Senior Backend Engineer to join one of its most critical and high-velocity teams. This is a full-time, 100% remote opportunity built around a TypeScript, Node.js, and Nest.js stack, with microservice architecture at the core. The platform powers real-time services for a rapidly growing merchant base and operates at meaningful scale. EST hours are required. This team owns more services than any other i

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Full-time

$170000 - $200000

Senior Backend .NET Engineer

Remote or Lakeland, Florida

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Today

RESPONSIBILITIES: Kforce has a client that is seeking a Senior Backend .NET Engineer in Lakeland, FL. Duties Include: * Design and implement backend architecture using .NET Framework/.NET 8 and C# * Develop and maintain RESTful APIs and microservices for web and mobile applications * Optimize application performance, scalability, and security across distributed systems * Collaborate with FE engineers to integrate user-facing elements with server-side logic * Implement database solutions (SQL Se

Full-time

$50 - $65 annually

Django Backend Lead Developer

Remote

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5d ago

Django Backend Lead DeveloperLocation: Jersey City, NJ / Charlotte, NC Remote Employment Type: Contract Job SummaryWe are seeking an experienced Django Backend Lead Developer to design, develop, and lead scalable backend applications and services. The ideal candidate will have strong expertise in Python, Django, REST APIs, Microservices, Cloud technologies, and database management, along with experience leading technical initiatives and mentoring developers. Key ResponsibilitiesLead backend dev

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Contract, Third Party

Depends on Experience

Senior Backend Developer

Remote

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23d ago

Location: Remote (U.S.)Employment Type: Full-Time Security Clearance Requirements- U.S. Citizenship is required.Must have the ability to obtain and maintain a DHS Public Trust clearance.Preference will be given to candidates with an active or recently held ICE or CBP Public Trust clearance, allowing for a faster onboarding process.Candidates must be able to successfully complete all required background investigations and security screening necessary to support federal government contracts.About

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Full-time

Depends on Experience

Senior Front-End & BFF (Backend-for-Frontend) Developer

Remote

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3d ago

Key Responsibilities Design and develop modern, responsive, accessible web applications for capabilities across pricing, underwriting, data, workspace, and operational experiences. Build and maintain Backend-for-Frontend services that aggregate APIs, compose domain data, manage experiencespecific orchestration, and simplify front-end integration. Create user-facing workflows that incorporate AI agents, recommendations, conversational interactions, decision support, task automation, and human-

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Contract

Depends on Experience

Backend Developer

Remote

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26d ago

We are seeking an experienced Senior Node.js & iOS Developer with a strong backend foundation and exposure iOS development experience. The ideal candidate will lead the design and development of scalable server-side applications while contributing meaningfully to native iOS solutions. Key Responsibilities Design, develop, and maintain robust, scalable Node.js backend services and APIsArchitect and build high-performance RESTful and GraphQL APIs for web and mobile consumptionDevelop and maintain

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Full-time

Depends on Experience

Backend Software Engineer (Platform)

Remote

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Today

Backend Software Engineer (Platform) W2 Contract Pay Rate: $60 - $70 per hour Location: Cupertino, CA - Remote Role Job Summary: We are looking for a strong Senior Software Engineer with experience in data engineering concepts to support our data platform initiatives. This role is best suited for someone who has solid backend engineering fundamentals and can work independently on data-related systems, pipelines, and services. Duties and Responsibilities: Design, build, and maintain backend

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Contract

$60 - $70 per hour

Urgent Need - LEAD JAVA BACKEND DEVELOPER - Remote

Remote

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Today

LEAD JAVA BACKEND DEVELOPER REMOTE 100% Remote. Must reside in EST or CST Overview Were seeking a Senior Java Engineer to join our engineering team and play a key role in designing, building, and maintaining cloud-native, event-driven microservices. This position requires deep technical expertise in Java (17+) and Spring Boot, along with a strong grasp of modern software architecture and design patterns. As a hands-on senior engineer, youll contribute to solution design, perform code reviews,

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Contract

Depends on Experience

AI Backend Engineer, Artificial Intelligence (AI) Required, Work From Home - G

Remote

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Today

AI Backend Engineer, Artificial Intelligence (AI) Required, Work From Home We are looking for talented AI Backend Engineers to build systems that power AI-driven decisioning, automation, and orchestration across our platform. This role sits at the core of our AI stack, between models, backend systems, and real users, where latency, correctness, reliability, and cost directly impact production experience. This is a fully remote position where you will be part of a global engineering team working

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Full-time

$140,000 - $200,000

Lead Backend Java Engineer (Kotlin)

Remote

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19d ago

About Evolutyz Corp: Evolutyz Corp, a vibrant, award-winning, woman-owned IT consulting firm headquartered in Naperville, IL. We are passionate about innovation and committed to driving business transformation with our custom technical solutions. As a certified MBE enterprise, we promote a diverse and inclusive work environment where your ideas are valued. At Evolutyz, youll find the perfect opportunity to grow your career, make an impact, and collaborate with a team that supports your professio

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Full-time

60 - 70

.Net Backend Developer with COTS products & Production support

Remote

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19d ago

HelloAll, Hope you are doing well, Title: .Net Backend Developer with COTS products & Production support Location: Remote Duration:12+ Months Responsibilities: Work with Product teams to develop highly scalable, flexible and resilient software solutions to accelerate the delivery timeline of our solutions.Partner with our system architects and product owners to re-architect our products to enable deployment on server less containerized cloud frameworks.Key participant in the development and tr

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Contract

50 - 60

Sr Backend Engineer (Python)

Remote

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5d ago

Role 1: Senior Backend Engineer Level: Senior (8+ years) Working hours: Minimum 5 hours overlap with US Pacific business hours Position Summary This engineer will build and operate the backend services behind CLIENTs AI features - the APIs, retrieval paths, and data layers that turn a model call into a product our customers can rely on. This is hands-on delivery work on a small team: the engineer owns services end to end, from schema and endpoint design through deployment and production behavior

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Contract

50 - 70

.Net Backend Developer with Azure

Remote

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5d ago

Role: .Net Backend Developer Location: East Hartford, CT (REMOTE) Relevant Experience: 9+ Years Senior .NET Backend Developer with Azure Cloud experience to join a core development team. The ideal candidate will have a minimum of 9 years of hands-on experience developing enterprise applications using Microsoft .NET technologies and modern cloud platforms. This role requires strong backend development expertise, experience with Angular, Azure services, CI/CD pipelines, and relational databases. W

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Third Party, Contract

Depends on Experience

Principal Backend Engineer - Music Discovery Platform - Roon

Remote or New York, New York

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Today

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 At Harman International, we are revolutionizing music metadata management and discovery. We're seeking a Princi

Full-time

USD 125,250.00 - 183,700.00 per year

Software Engineer, Back-End - Mail (US)

Remote

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Today

Superhuman offers a remote-flexible working model for this particular role on the Mail team. This gives team members plenty of focus time and the flexibility to do their best work from wherever they're based, while staying closely connected to a collaborative, tight-knit team culture. For those based in San Francisco, New York City, or Seattle, a hybrid setup is also available. About Superhuman Superhuman is the AI productivity platform on a mission to unlock the superhuman potential in everyo

Full-time

USD 186,000.00 - 300,000.00 per year

Senior Backend Engineer

Remote

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Today

Highlights: Location: Remote (CET hours preferred) Language: Russian-speaking team About Fundraise Up We're Fundraise Up - a global fundraising platform built to make donating to nonprofits fast, seamless, and accessible to all. Every month, our technology powers tens of millions of dollars in donations across the globe. We focus on innovation that directly impacts results: faster load times, higher conversion rates, global payment support, and accessibility-first design. Our platform is tru

Full-time

Backend jobs in Illinois, USA