Senior Backend Developer jobs in Vernon Hills, IL

Senior Backend Developer (AI, Python)- Remote - Contract

Remote

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3d ago

Title : Senior Backend Developer (AI, Python) Remote Job Type: Contract Project description We are seeking a hands-on GenAI Engineer to join a team developing production-grade, AI-powered solutions for a major US insurance provider. Designed and developed an enterprise-grade Generative AI platform using Python, FastAPI, and FastMCP to automate recruitment workflows and provide intelligent candidate insights. Built scalable, production-ready APIs that integrated with OpenAI GPT and Anthro

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Contract, Third Party

$60 - $65

Senior Backend Developer (AI, Python)

Remote

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Today

Project description We are looking for a Backend Developer to join a team building scalable, cloud-native services for a major US insurance provider. You will design and deliver high-performance Python APIs on Microsoft Azure, own services end to end from development through deployment on AKS, and make sure they are well monitored, observable and reliable in production. The platform also exposes enterprise capabilities to AI agents through MCP servers, so you will work at the intersection of cla

Full-time

Senior Backend .NET Developer

Remote

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Today

Job Title: Senior Backend .NET Developer Job Location: Remote Job Type: Full Time Job Description: Develop backend services and REST APIs using C# and .NET. Build business and domain logic using SOLID and Clean Architecture principles. Work with Entity Framework Core, LINQ, SQL Server, and Azure SQL. Design integrations with enterprise and third-party systems. Implement asynchronous processing, background services, and messaging. Work with Azure Service Bus and other messaging technologies. I

Full-time

Senior Backend Software Engineer (Python or PHP) - Chicago - ONSITE 2X Week- FreeWheel

Chicago, Illinois

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Today

FreeWheel, a Comcast company, provides comprehensive ad platforms for publishers, advertisers, and media buyers. Powered by premium video content, robust data, and advanced technology, we're making it easier for buyers and sellers to transact across all screens, data types, and sales channels. As a global company, we have offices in nine countries and can insert advertisements around the world. Job Summary FreeWheel's mission is to build great advertising software. We offer the most extensible

Full-time

USD 129,515.93 - 194,273.89 per year

Senior Software Engineer

Remote

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Yesterday

Job Title: Senior Software Engineer Duration: 6-12+ Months CTH Location: Redwood City, CA (Remote) Position Summary: We are building and operating a unique software stack of cloud infrastructure, software services, APIs, web and mobile interactive interfaces, and AI-driven data analytics pipelines to deliver life-saving results in the highly complex infectious disease landscape. We believe the success of client products is driven by both our unique technology and the elegance of the software

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Contract, Third Party

50 - 60

Senior Backend Software Developer

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

Full-time

Compensation information provided in the description

Senior Backend Engineer - Prompt Security (Node.js / TypeScript)

Remote

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Today

Our Purpose At SentinelOne, we are driven by a clear purpose: to give the advantage to those who secure our future. As AI reshapes how organizations build, operate, and innovate, the responsibility to protect them becomes more critical than ever. When you join SentinelOne, your work helps protect global enterprises, critical infrastructure, and the technologies shaping tomorrow. If you are motivated by meaningful challenges and want your impact to be real, measurable, and global, you will find

Full-time

USD 132,000.00 - 182,000.00 per year

Senior Backend Engineer

Remote

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Today

Who we're looking for As a Senior Backend Engineer, you'll be joining an impactful team of highly skilled engineers who are building the core platform features and services to fuel our rapidly growing company! As a team, we are always working to continuously improve both our product and our craft. The Backend team will focus on developing world-class services and integrations, all the while ensuring to keep our apps secure, high-performing, and most importantly scalable (we're growing!). We're l

Full-time

USD 170,000.00 - 195,000.00 per year

Senior Java Back End Developer (Google Cloud Platform) - Remote/Hybrid

Remote or Columbus, Ohio

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Today

Genesis10 is currently seeking a Senior Java Back End Developer (Google Cloud Platform) for a contract position with a Regional Financial Institution located in Columbus, OH. This is a 6+ month contract opportunity. This role can work remotely or can be a hybrid role from Columbus, OH. Compensation: $70.00 - $80.00 per hour, W2, based on qualifications Position Overview: This role involves designing, developing, and supporting enterprise-grade APIs and cloud-native applications hosted on Google

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Full-time

USD 70.00 - 80.00 per hour

Senior Dot Net Developer with Azure

Remote

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15d ago

Job Title: Senior Dot Net Developer Location: Remote(USA) Experience: 10+ Years Description: Senior .NET Backend Developer (Azure Cloud)Job SummaryPW Business is seeking a Senior .NET Backend Developer with Azure Cloud experience to join a core development team. The ideal candidate will have a minimum of 8 years of hands-on experience developing enterprise applications using Microsoft .NET technologies and modern cloud platforms. This role requires strong backend development expertise, experien

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Contract

40 - 50

Senior Lead Software Engineer, Backend

Remote

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Today

At DraftKings, AI is becoming an integral part of both our present and future, powering how work gets done today, guiding smarter decisions, and sparking bold ideas. It's transforming how we enhance customer experiences, streamline operations, and unlock new possibilities. Our teams are energized by innovation and readily embrace emerging technology. We're not waiting for the future to arrive. We're shaping it, one bold step at a time. To those who see AI as a driver of progress, come build the

Full-time

USD 160,700.00 per year

Senior Software Engineer, Backend | Audit Product Team

Remote

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Today

Machinify is a leading healthcare intelligence company with expertise across the payment continuum, delivering unmatched value, transparency, and efficiency to health plan clients across the country. Deployed by over 85 health plans, including many of the top 20, and representing more than 270 million lives, Machinify brings together a fully configurable and content-rich, AI-powered platform along with best-in-class expertise. We're constantly reimagining what's possible in our industry, creatin

Full-time

USD 200,000.00 - 230,000.00 per year

Sr/Staff Software Engineer, Backend | Web Products

Remote

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Today

Full-time

USD 200,000.00 - 250,000.00 per year

Senior MERN Stack Engineer – Backend Heavy + AWS

Remote

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9d ago

Senior MERN Stack Engineer Backend Heavy + AWSLocation: Remote EST Candidates Only Duration: Long-Term Contract Time Zone Requirement: Must be located in and able to work EST hoursRate : $70/hr on CTCRequired Skills 8+ years of overall software development experience. Strong hands-on experience with Node.js and Express.js. Strong backend development experience using JavaScript and TypeScript. Strong experience designing and developing RESTful APIs and backend services. Experience building micr

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Full-time, Third Party

65 - 70

Senior Backend Engineer

Remote or Stamford, Connecticut

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Today

RESPONSIBILITIES: Kforce has a client near Stamford, CT that is seeking a Senior Backend Engineer who will work across engineering, product, analytics, and operations to architect durable serverless systems, develop clean and reliable Python services, and power mission-critical workflows such as claims processing, eligibility ingestion, episode creation, provider search, and care coordination. Location: Remote within the U.S. The team is based near Stamford, Connecticut, and candidates must be

Full-time

$150,000 - $190,000 annually

Senior Backend Engineer (Multiple Positions)

Remote

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Today

Senior Backend Engineer About LaunchDarkly Engineering LaunchDarkly helps engineering organizations ship software and AI with speed, safety, and control. Our platform gives teams the confidence to release gradually, target experiences to the right audiences, learn through experimentation, understand what is happening in production, and respond quickly when risk appears. Our engineers build the systems, services, SDKs, developer tools, cloud infrastructure, and product experiences that make thi

Full-time

USD 191,800.00 - 263,670.00 per year

Senior Backend Engineer, Experimentation

Remote

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Today

About the Job: LaunchDarkly is seeking a Senior Backend Engineer to join our Experimentation team. The Experimentation team is building one of the company's most strategic product areas: a platform that helps leading engineering organizations move beyond intuition and make product decisions with real statistical confidence. Sitting at the intersection of large-scale systems, data science, and user experience, the team is creating a best-in-class experimentation product that lets customers set

Full-time

USD 191,800.00 - 263,670.00 per year

Senior Backend Engineer, Billing

Remote

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Today

About the Job: Software powers the world, and LaunchDarkly empowers teams to deliver and control it safely. As a Senior Backend Engineer on the Billing team, you will own the systems that turn every plan, price, entitlement, and usage limit into revenue - checkout, subscription and entitlement APIs, usage metering, and the integrations to our billing, CRM, and finance systems. When billing is wrong, customers get the wrong product and we invoice the wrong amount. Correctness here is a commitmen

Full-time

USD 191,800.00 - 263,670.00 per year

Senior Backend Engineer II - IPC

Remote

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Today

ABOUT BESTOW Life insurance is one of the world's most important products. It's also one of the hardest to build, distribute, and modernize. Bestow exists to change that. Bestow is a leading vertical technology platform serving some of the largest and most innovative life insurers. Our platform unifies the fragmented, legacy value chain, enabling carriers to launch products in weeks instead of years. Carriers choose us to scale and operate at unprecedented speed, powered by AI and automation.

Full-time

USD 170,000.00 - 200,000.00 per year

Senior Backend Engineer

Remote or Boston, Massachusetts

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Today

About Re:Build At Re:Build, our mission is to ensure the next generation of important products are made, at scale, in America. We are laying the foundation for a better future for our customers, employees, and communities by revitalizing America's manufacturing base and creating meaningful jobs across the country, including in historically deindustrialized regions. We operate an advanced, end-to-end manufacturing platform that partners with industrial companies and innovators to take products f

Full-time

USD 165,000.00 - 200,000.00 per year

Senior Backend Developer jobs in Vernon Hills, IL, USA