Backend Engineer Jobs in Chicago, IL

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ETL Backend Tester-Enrollment or Claims Insurance-Fully Remote

Elite Technical

Remote

Contract

Absolutely no third parties please Candidates must reside locally in Maryland, Virginia, or Washington DC. Although fully remote, a final face to face interview will be required. There will be occasional onsite office visits Reston VA, roughly once per quarter. Bachelor of Science (BS) is required. Min. 6+ years of experience in an SDET position. In addition to automation, must have knowledge of Backend ETL Testing experience as well. Must have Healthcare Insurance Experience, specifically sup

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.

Agile Delivery Lead (Cyber Security): Charlotte, NC: Hybrid

NodeLogix

Remote or Charlotte, North Carolina, USA

Contract

Pays $60/hr ON W2 Til: 12/2025: Potential extensions W2: EAD 3 DAYS ** Experience leading API development/backend API Developer ** Jira/Confluence; ** Fluent in Agile; ** Lead technologist; ** Execute vision/delivery of vision; ** Strong Product Manager ** Understanding of cyber security centers. ** Demonstrated ability to work on multiple complex projects in a matrixed environment; ** Demonstrated ability to build strong relationships; ** Critical thinking. ** Attention to detail/detail orien

.Net Backend Architect

Photon

Remote

Contract, Third Party

.Net Backend Architect Remote We are seeking a seasoned Backend Architect with deep expertise in regulated financial systems, trading platforms, and end-to-end trading infrastructure to lead the architecture and backend development of a greenfield Futures Commodity Commissions Market (FCM) platform. This product will power a federally regulated sports prediction market, akin to Robinhood s financial trading model, requiring full compliance with CFTC and NFA regulations. You will design, architec

Senior Cloud-Native Back-End Developer / Illinois

DATAMAXIS, Inc

Northfield, Illinois, USA

Full-time

About the Role We are seeking a highly experienced Senior Cloud-Native Back-End Developer to lead the design and implementation of scalable, resilient, and high-performance applications. This role is pivotal in modernizing e-commerce platform, integrating with cutting-edge SaaS solutions, and ensuring systems are designed for resiliency, reliability, and operational excellence. As a senior team member, you will drive technical design decisions, mentor junior developers, and embed Site Reliabili

Senior Manager, Software Engineering, Back End

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, 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

Senior Manager, Software Engineering, Back End

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, 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

Senior Manager, Software Engineering, Back End (Java, Python, AWS)

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, Back End (Java, Python, AWS) 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 emergi

UI Angular Developer (AVP) - Hybrid

Citi

Remote or Tampa, Florida, USA

Full-time

The Institutional Data Platform team is responsible for the Olympus platform to streamline data sources across Service, Markets, Banking and Client enabling industry leading analytics, client, regulatory, surveillance supervisory risk and finance reporting and data science solutions along with genesis platform. The UI Angular Developer (Applications Development Senior Programmer Analyst - C12) is an intermediate level position responsible for participation in the establishment and implementatio

Senior Manager, Software Engineer (People Leader)

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineer (People Leader) 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.

Senior Golang Developer

Reliable Software Resources

Remote

Contract

This is Srikanth from Reliable Software. We have an opportunity with one of our direct clients, and I'd like to share the details with you. Please review the information below and let me know if you're interested. Kindly share your updated resume if you'd like to be considered. Job Title: Senior Golang Developer Location: 100% Remote Duration: 6+Months W2 Only Must have the following: Senior Backend Engineer (10+ years) Expertise in Go, Typescript, node.JSProficiency in designing efficient Grap

.NET Backend Developer

Neo Prism Solutions, LLC

Remote

Contract

Job Title: .NET Backend Developer with Azure Job Description: We are looking for a .NET Backend Developer with experience in Microsoft Azure. The candidate should be skilled in C#, .NET Core, and building APIs. Experience with Azure services like App Services,

Senior Manager, Software Engineering, Back End

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, 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

Senior Manager, Software Engineering, Back End

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, 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

Front End Web Developer

TEKsystems c/o Allegis Group

Chicago, Illinois, USA

Full-time

KEY RESPONSIBILITIES: User Interface Development: Design, develop, and implement responsive and visually appealing frontend user interfaces using HTML, CSS, TypeScript/JavaScript, and frameworks such as Next.js/React or Angular, ensuring a seamless user experience across various devices and browsers. Help migrate our Adobe Experience Manager (AEM) powered site to a modern Next.js/React implementation.Platform Integration: Integrate user interfaces with digital platforms, ensuring seamless intero

Senior Front-end Developer (Information Security)

Walgreens

Deerfield, Illinois, USA

Full-time

Job Description Job Summary: Walgreens is seeking a highly skilled Senior Front-end Developer to join our Security team in Deerfield, IL. In this role, you will lead the development of engaging, scalable, and secure front-end web applications for one of the nation's largest pharmacy and retail companies. You'll work closely with cross-functional teams to deliver seamless digital experiences across web platforms, while applying modern web development practices and ensuring compliance with the la

Senior Manager, Software Engineering, Back End (Java, Python, AWS)

Capital One

Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, Back End (Java, Python, AWS) 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 emergi

Backend Developers (Python, SQL, Starrocks) - Remote

FlairTech Solutions

Remote

Contract

Role: Backend Developers Location: Remote Starrocks experience would be great - it is a little niche so any understanding of open-source , Airflow, Open-shift, Kubernetes experience is needed. -SQL -Python -API -Microservices -Cloud (Azure, Snowflake, Google Cloud Platform) -GraphQL

Fullstack Developer

TEKsystems c/o Allegis Group

Chicago, Illinois, USA

Full-time

KEY RESPONSIBILITIES User Interface Development: Design, develop, and implement responsive and visually appealing frontend user interfaces using HTML, CSS, TypeScript/JavaScript, and frameworks such as Next.js/React or Angular, ensuring a seamless user experience across various devices and browsers. Help migrate our Adobe Experience Manager (AEM) powered site to a modern Next.js/React implementation. REST API Development: Design, Develop, test and maintain scalable and secure RESTful APIs that i

BE Crypto Software Engineer

Russell, Tobin & Associates

Remote

Contract

Job Title: Crypto Software Engineer Location: Remote California Duration: 6 Months plus Pay Range: $58/hr-$65/hr on W2 JOB DESCRIPTION Join the User Economy team in this contractor role, working on an exciting initiative that enables users to earn money through various company products such as Awards, Premium, Collectible Avatars, and more. We're redefining how users engage with and monetize their contributions, shaping the future of the company's creator ecosystem. We are specifically hiring a