python backend developer jobs in Chicago

The Cyber Defense Engineer III position is responsible for monitoring, detecting, and validating complex security threats. As our Security Operations Center transitions toward an engineering and automation-first model, this role acts as a critical bridge between traditional cyber defense monitoring and modern development practices. You will take a leading...

OverviewOntrac Solutions is seeking a high-aptitude Production Engineer (IC2) to support a large-scale enterprise OS modernization and infrastructure hardening program for one of our enterprise clients. This role is built for an engineer with real software engineering foundations — specifically Python — who has since moved into infrastructure and is...

Data Engineer Chicago, Dallas or NY - hybrid WFH Why This Role Is Valuable This person will sit on a more senior Data Engineering team, and have ample opportunity to learn modern data engineering technologies such as Spark/PySpark and working in modern cloud environments, with cloud DWs. While you must have the core ETL/Data Engineering...

Founded in 1999, Geneva Trading is a premier global principal trading firm with strategically located offices in Chicago, Dublin, and London. Our relentless focus on trading excellence combined with technological innovation has equipped us with a best-in-class proprietary trading platform, enabling us to compete at the highest levels in the global markets....

Job Title: Information Security Engineer – Security Automation and ResponsePrimary Location: RemotePosition Type: Direct Hire Overview: TalentFish is casting a line for an Information Security Engineer – Security Automation and Response. This is a Direct Hire role, fully remote. This position exists to advance Security Operations capabilities through...

At Tanius we have a high standard. Our people come in each day ready to work hard, adapt to new challenges, and find solutions. We are looking for motivated individuals to develop and test new trading systems. Your role will include using the latest machine learning techniques to analyze mountains of market data and apply them to new and existing trading...

Company DescriptionWe focus on what we do best — providing insurance solutions that allow our customers to better manage their risks and grow profitably. We use our expertise to continually evolve our products and services to anticipate and address our customers' needs. Our broad portfolio enables us to respond to a wide range of business risks while...

Shirley Ryan AbilityLab is the global leader in physical medicine and rehabilitation for adults and children with the most severe, complex conditions. By joining our team, you’ll be part of our life-changing mission and vision. You’ll contribute to an innovative, multifaceted culture that is second to none — one that embraces collaboration, excellence,...

DescriptionReady for a sales career where high performance directly aligns with high rewards, without the hard close? Do you want to earn what you deserve for your energy and effort, not what the limits of a traditional commission structure dictate?Before you read further: this is an independent, self-employed business. If you need a guaranteed pay cheque...

DRW, located in Chicago, is seeking a Site Reliability Engineer to join their Algorithmic Trading Team. This role is crucial for ensuring the robustness of production trading systems and involves collaborating with engineers and traders for 24/7 support. Candidates should have a Bachelor’s in computer science, 3-10+ years' experience in software...

About Us:Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems.Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who...

XR Trading is a proprietary trading firm with employees in the Netherlands, Singapore, UK and US. XR participates in a wide variety of marketplaces including global futures, equities, commodities, options, fixed income, and cryptocurrencies. Our culture emphasizes teamwork and focuses on continuous integration and test-driven development.  We are...

Chicago-Hybrid (3X a week)(Please share your GitHub Account)Opportunity OverviewNOCD is seeking a Senior Full Stack Engineer to join our rapidly growing digital health team and help expand access to effective OCD treatment. You will work closely with engineering leadership, product, design, and clinical teams to build and scale systems that improve...

Role: Lead Software Engineer – AI & Cloud Architecture Location: Peoria, IL and/or Chicago, IL (Chicago preferred) Work Model: Hybrid – 2 days per week onsite Job Description We are seeking a Lead Software Engineer to architect and deliver next-generation software platforms powered by Artificial Intelligence, Large Language Models (LLMs), and Agentic...

Job Description: Hands on experience in software test automation and performance engineering (or equivalent), covering AWS and on-perm platforms.  Strong coding skills in one or more: Java, Python, JavaScript, Groovy, TypeScript  Hands-on experience with testing tools: Cypress, Selenium, JMeter, Blazemeter or equivalent tools  Working proficiency with...

Director, Data Scientist – Global Payment Network Data is at the center of everything we do. As a startup, we disrupted the credit card industry by individually personalizing every credit card offer using statistical modeling and the relational database, cutting edge technology in 1988! Fast-forward a few years, and this little innovation and our passion...

Primary Skills GenAI & Agentic AI Expertise: Development of generative & predictive AI models (NLP, Computer Vision) Agentic workflows, multi-agent systems, reinforcement learning Frameworks: LangChain/LangGraph, Crew AI, Semantic Kernel, OpenAI Agentic SDK Programming & ML Libraries: Python, SQL TensorFlow, PyTorch, scikit-learn Prompt...

Founded in 2017, NinjaHoldings works to give everyday Americans better access to financial services than traditional institutions typically provide. Through our CreditNinja and NinjaCard brands, we offer digital banking and lending products designed for consumers often overlooked, paired with incentives that support long-term financial improvement. Our Edge...

Who We Are Founded in 1980 as Aardvark Financial, TransMarket Group (TMG) is a privately held global markets proprietary trading firm in Chicago. We use next-generation technology to capture opportunities around the world and manage risk in financial markets. Our mission is to bless others through the services we provide and through the generous stewardship...

At Early Warning, we’ve powered and protected the U.S. financial system for over thirty years with cutting-edge solutions like Zelle®, Paze®, and so much more. As a trusted name in payments, we partner with thousands of institutions to increase access to financial services and protect transactions for hundreds of millions of consumers and small...