Senior Backend Developer jobs in Vernon Hills, IL

IT Software Engineer 5 / Sr. Java Backend Developer with AWS

Chicago, Illinois

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Yesterday

3Core Systems, Inc is an SAP and Success Factors Partner with employees located across the United States. Our organization is dedicated to customer and employee satisfaction. We provide High Quality, Cost efficient and Competitive Solutions and Resources. 3Core Systems is looking for IT Software Engineer 5 (Sr. Java Backend Developer with AWS) for one of our clients in Chicago, IL (Onsite) with experience in Java17+, Spring Boot, RESTAPI, AWS Cloud, Microservices. Job Title: IT Software Engineer

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Third Party, Contract

Depends on Experience

Senior .NET Backend Developer (Azure Cloud)

Remote

•

Yesterday

Job Summary PW 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, experience with Angular, Azure services, CI/CD pipelines, and relational databases. We are looking for a reliable professional who is technicall

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Contract

Depends on Experience

Senior Backend Software Engineer (Kotlin/Spring Boot/Kafka) | Remote

Remote

•

Yesterday

Title: Senior Backend Software Engineer (Kotlin/Spring Boot/Kafka) Location: 100% Remote (US-based) Job Type: Contract (6 months) Compensation: $56.00 - $86.00 per hour (W2) Industry: Retail About the Role Our client, a leading Fortune 50 retailer with a large-scale omnichannel commerce platform, is seeking a Senior Backend Software Engineer to join its Tax Technology organization. This team develops and supports the technology solutions that calculate, manage, report, and ensure compliance w

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Contract

Depends on Experience

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 Lead Software Engineer, Back End

Chicago, Illinois

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Today

Senior Lead Software Engineer, Back End Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who love to solve real problems and meet real customer needs. We are seeking Back End Software Engineers who are passionate about marrying data with emerging technologies. As a Capital

Full-time

USD 209,000.00 - 238,500.00 per year

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 Engineer (.NET)

Remote

•

Yesterday

Key Responsibilities API & Service Architecture: Design, build, and maintain production-grade, secure RESTful APIs and microservices managing provider hierarchies, billing accounts, and payment lifecycle events.Event-Driven & Webhook Systems: Implement reliable, idempotent event consumers and webhook ingestion pipelines to process asynchronous notifications (e.g., ACH NOC events, banking state changes) with zero data loss.Data Migration & Modeling: Design normalized relational schemas and data t

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Contract

Depends on Experience

Sr. Software Engineer II, Backend (Rust)

Remote or Chicago, Illinois

•

Today

Disclaimer: Please be advised that the most accurate and up-to-date information about our open roles-including job descriptions, compensation, and benefits-can only be guaranteed on our official job board. For the latest listings and details, please visit: ;br> JOIN US ON OUR MISSION TO BECOME THE #1 RETAIL TRADING PLATFORM IN THE WORLD Welcome to the dynamic world of NinjaTrader! As an industry-leading trading platform and futures broker, we're empowering traders to take control of their finan

Full-time

USD 140,000.00 - 190,000.00 per year

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

Remote

•

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

•

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 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 Dot Net Developer with Azure

Remote

•

Yesterday

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

Sr. Backend Software Engineer

Remote

•

8d ago

Easy Apply

Full-time

155000 - 170000

Senior Software Engineer, Backend | Audit Product Team

Remote

•

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

•

Today

Full-time

USD 200,000.00 - 250,000.00 per year

Senior Backend Engineer

Remote or Nashville, Tennessee

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Today

RESPONSIBILITIES: Kforce has a client 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, opening an office soon near Nashville, TN

Full-time

$150,000 - $190,000 annually

*Senior Full Stack Engineer (Backend focused - Nodejs, Javascript, AWS exp.) - W2 role

Remote

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24d ago

Kellton Tech is a full-service software development company, offering end-to-end IT solutions, strategic technology consulting and product development services in Web, SMAC (Social, Mobile, Analytics, Cloud), ERP-BPM, and IoT space Our methodology of inventing infinite possibilities with technology helps us develop best in-class and cost effective solutions for our clients. Currently Kellton Tech is looking for talented resources for one of our listed client. Below are the position details Posit

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Third Party, Contract

Depends on Experience

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 - Microservices

Remote

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: None Public Trust/Other Required: MBI (T2) Job Family: Software Engineering Job Qualifications: Skills: Agile Methodology, Computer Programming, Software Development Life Cycle (SDLC) Certifications: None Experience: 10 + years of related experience ship Required: No Job Description: Senior Backend Engineer - Microservices In this senior engineering role, you will design, bu

Full-time

USD 136,000.00 - 184,000.00 per year

Senior Backend Developer jobs in Vernon Hills, IL, USA