Back End Engineer Jobs in Illinois

1 - 20 of 133 Jobs

Senior Backend Engineer - CryptoJob Title - Senior Backend Engineer - Crypto

JobotCompany Name - Jobot

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Chicago, Illinois, USA

Full-time

Venture backed DeFi startup is hiring for a Senior Backend Engineer! This Jobot Job is hosted by: Sydney Weaver Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $150,000 - $300,000 per year A bit about us: Well-Funded, venture backed startup is looking for a Senior Software Engineer to join their growing team! This startup is partnered with big names in the crypto space and is a core contributor to a Solana liquidity aggregator and a mobile

Senior Backend Engineer - DeFi StartupJob Title - Senior Backend Engineer - DeFi Startup

JobotCompany Name - Jobot

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Chicago, Illinois, USA

Full-time

Venture backed DeFi startup is hiring for a Senior Backend Engineer! This Jobot Job is hosted by: Sydney Weaver Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $175,000 - $275,000 per year A bit about us: DeFi startup backed by Coinbase Ventures and a few other top investors is looking for a Backend Engineer to join their growing team! They are partnered with some of the biggest names in the crypto space and serves as a core contributor to

Lead Java Backend Engineer - Vice President - Tampa FLJob Title - Lead Java Backend Engineer - Vice President - Tampa FL

CitiCompany Name - Citi

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Remote or Tampa, Florida, USA

Full-time

The overall objective of this role is to drive applications systems analysis and programming activities. Responsibilities: Manage one or more Applications Development teams to accomplish established goals as well as conduct personnel duties for team (e.g. performance evaluations, hiring and disciplinary actions)Utilize in-depth knowledge and skills across multiple Applications Development areas to provide technical oversight across systems and applicationsReview and analyze proposed technical s

Staff Backend Engineer, Media FoundationJob Title - Staff Backend Engineer, Media Foundation

AirbnbCompany Name - Airbnb

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Remote

Full-time

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Media - images & videos, are critical to the success of Airbnb as it enables guests to make informed bookin

Senior Java Backend Engineer - VPJob Title - Senior Java Backend Engineer - VP

CitiCompany Name - Citi

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Remote or Tampa, Florida, USA

Full-time

Citi's Functions Technology is responsible for delivering Technology solutions to Citi's Functions organizations. Functions Technology mission is to optimize Citi's Technology environment by delivering world class applications, driving standardization of the production environment, reducing complexity, optimizing management of systems supporting global functions such as Compliance, Controls, Internal Audit and Risk, and introducing innovative technologies that provide new business capabilities,

Senior Azure Cloud Backend Engineer (Java, Python, C++)Job Title - Senior Azure Cloud Backend Engineer (Java, Python, C++)

Activesoft, Inc.Company Name - Activesoft, Inc.

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Chicago, Illinois, USA

Contract

Job Title: Solutions Engineer (Lead Cloud Solutions Engineer) Job Location: Chicago, IL (Hybrid - 3 days/week onsite) Duration: Long Term Key Technology: Java, Python, C++, SQL/NoSQL database, Azure Job Responsibilities: Act as the lead engineer for each domainCollaborate with Solution Architects to ensure understanding needed for engineering level guidance to nearshore teamsTranslate architecture design to engineering level guidanceOwn specifying architectural designs into sprint-ready engine

senior backend engineerJob Title - senior backend engineer

When I.T. Matters LLCCompany Name - When I.T. Matters LLC

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Remote

Full-time

Please Only apply if this is a solid fit. NO 3rd parties- Client does NOT sponsor Senior Backend Engineer What You ll Do: Design, build, and optimize backend systems that power real-time and batch video rendering pipelines.Lead API development (GraphQL and REST) and integrate with tools like OpenAI, stock footage providers, and CRM platforms.Develop features for a new paid API product enabling large-scale CRM integration.Tackle AI-enhanced video editing workflows and drive quality improvements.

Lead Python Backend Engineer-Remote with Occasional Visits to Danbury, CT office-Full time RoleJob Title - Lead Python Backend Engineer-Remote with Occasional Visits to Danbury, CT office-Full time Role

Cyber Sphere LLCCompany Name - Cyber Sphere LLC

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Remote

Full-time

Title Lead Python Backend Engineer Location-Remote with Occasional Visits to Danbury, CT office Duration FTE Job Description We re looking for a Lead Backend Engineer to drive backend development, optimize data infrastructure, and support critical integrations across our ecosystem. You ll play a pivotal role in modernizing our backend architecture to ensure scalability, reliability, and efficiency, while leading transformative initiatives such as: Enhancing CRM and subscription management syste

Lead Python Backend Engineer - Danburry,CT - Remote with client visits - FulltimeJob Title - Lead Python Backend Engineer - Danburry,CT - Remote with client visits - Fulltime

Cyber Sphere LLCCompany Name - Cyber Sphere LLC

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Remote

Full-time, Third Party

Lead Python Backend Engineer Remote with Occasional Visits to Danbury, CT Interview Mode: In person We re looking for a Lead Backend Engineer to drive backend development, optimize data infrastructure, and support critical integrations across our ecosystem. You ll play a pivotal role in modernizing our backend architecture to ensure scalability, reliability, and efficiency, while leading transformative initiatives such as: Enhancing CRM and subscription management systems to improve customer en

Backend Python Engineer (REMOTE)(No C2C/H1B)Job Title - Backend Python Engineer (REMOTE)(No C2C/H1B)

NetSource, Inc.Company Name - NetSource, Inc.

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Remote

Contract

No C2C/H1B Remote, preference in the LA area to come into the occasional in person meetings. Please note that this is a 4-month contract position. Tech Stack / Tools: Python (NumPy, Pandas, SciPy) SQL (PostgreSQL or MySQL preferred) Github Jupyter notebook Experience with production systems and deployment environments Requirements: 3+ years of experience in backend development using Python in a production environment. Must know be proficient in NumPy, Pandas, SciPy, and Object-Oriented Progra

Backend Software EngineerJob Title - Backend Software Engineer

Bayside SolutionsCompany Name - Bayside Solutions

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Remote

Contract

Backend Software Engineer W2 Contract Salary Range: $114,400 - $135,200 per year Location: Austin, TX - Remote Role Requirements and Qualifications: 3-4+ years of backend development experience in Python and/or Java Proven track record of building platforms or adding features to backend services Experience developing large-scale web applications or platforms that serve other teams (e.g., REST services, backend architecture). Bachelor's degree in Computer Science Preferred Qualifications: Ex

Sr. Back-End Software EngineerJob Title - Sr. Back-End Software Engineer

DRC Systems USA LLCCompany Name - DRC Systems USA LLC

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Remote

Contract

Overview of Project: THE LFRM 2.0 PROJECT AIMS TO MODERNIZE HOW FREIGHT RATES ARE CALCULATED, MANAGED, AND VALIDATED ACROSS OUR ORGANIZATION. THIS INITIATIVE INVOLVES DEVELOPING A SCALABLE PLATFORM ON NEWER INFRASTRUCTURE COMPONENTS AND TECHNOLOGIES, REPLACING CURRENT MANUAL PROCESSES WITH AUTOMATED SOLUTIONS.Required Skills & Experience: 5+ years of experience in back-end development, with a strong focus on database development. Proficiency in Python, Java, Node.js and related frameworks. Exten

Backend Software Engineer, MLJob Title - Backend Software Engineer, ML

Bayside SolutionsCompany Name - Bayside Solutions

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Remote

Contract

Backend Software Engineer, ML W2 Contract Salary Range: $135,200 - $156,000 per year Location: Remote Role - PST Job Summary: As a Backend Software Engineer, you will work with the engineering team, EPM, and customers to support customer migration to next-generation services that generate, manage, and consume datasets, features, and embeddings used for ML training. You will utilize tooling to migrate data and work with customers to change their Python clients to start using the new SDK. Thi

Backend JAVA Engineer (REMOTE- EST Timezone)(No C2C/H1B)Job Title - Backend JAVA Engineer (REMOTE- EST Timezone)(No C2C/H1B)

NetSource, Inc.Company Name - NetSource, Inc.

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Remote

Contract

No C2C/H1B Java backend development experience is a must; all others will be rejected. Network programming techniques (SMP, TCP/IP, Sockets) is a must. Please note that this is a 6-month contract position with possibility to extend. A coding exercise to validate technical skills will be on the 1st interview with client.Remote Work Considerations: While we prefer candidates to work onsite, we are open to remote candidates as long as they can commit to core working hours in US Eastern Time.Locati

Staff Back End Engineer (MTS 2)Job Title - Staff Back End Engineer (MTS 2)

eBay Inc.Company Name - eBay Inc.

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Remote or Portland, Oregon, USA

Full-time

At eBay, we're more than a global ecommerce leader - we're changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We're committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work - every day. We're in this together, sustaining the futur

Principal Backend EngineerJob Title - Principal Backend Engineer

3M CompanyCompany Name - 3M Company

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Remote or Maplewood, Minnesota, USA

Full-time

Job Description: Principal Backend Software Engineer Collaborate with Innovative 3Mers Around the World Choosing where to start and grow your career has a major impact on your professional and personal life, so it's equally important you know that the company that you choose to work at, and its leaders, will support and guide you. With a wide variety of people, global locations, technologies and products, 3M is a place where you can collaborate with other curious, creative 3Mers. This positi

Lead Backend Engineer, PythonJob Title - Lead Backend Engineer, Python

Launch PotatoCompany Name - Launch Potato

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Remote

Full-time

WHO ARE WE? Launch Potato is a digital media company with a portfolio of brands and technologies. As The Discovery and Conversion Company, Launch Potato is a leading connector of advertisers to customers at all parts of the consumer journey, from awareness to consideration to purchase. The company is headquartered in vibrant downtown Delray Beach, Florida, with a unique international team across over a dozen countries. Launch Potato's success comes from a diverse, energetic culture and high-pe