326 junior python developer jobs at 148 companies in Illinois
🚀PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yrOn-SiteFull Time
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
Supernova Technology: Provides cloud-based digital software for securities-based lending.
Entry-level software engineer; learn SDLC, backend, coding; BS in CS or related field or equivalent practical experience; Java/C/C++, JavaScript; Java Spring Framework; handling high-priority requests; startup adaptability.
Java, C/C++, JavaScript, Python, Spring Framework, Spring Boot
Junior Software Engineer (C++ & AI-Assisted Development)
Chicago, Illinois, United States
OnsiteFull Time
SG Cap Trading: Proprietary trading firm developing automated trading software and systems.
1+ YOE1-2 years C++ experience; AI tooling experience; problem solving; BS in CS/CE or equivalent; Python is a plus; Git/IDE tooling; interest in local LLMs.
C++, Python, Git, CLion, VSCode, CI/CD, Local LLMs
Akuna Capital: Proprietary trading firm providing liquidity in global options markets.
Pursuing a technical bachelor’s/masters/PhD graduating by Aug 2027 with 3.5+ major GPA, legal U.S. work authorization on day one (OPT/STEM accepted), strong Object-Oriented Python and distributed systems skills, and strong communication.
International Motors: Manufacturer of commercial trucks, buses, and diesel engines.
0+ YOEBachelor's degree (or pursuing) accepted with no experience OR 2+ years software engineering; experience with Python, Pandas, Scikit-learn, SQL, Databricks, Dataiku, and Azure; foundational ML knowledge and strong teamwork and learning ability.
New York City or London or Singapore or Austin or Chicago
$300k/yrOnsiteFull Time
Hudson River Trading: A quantitative firm using technology to trade global financial markets.
BS/MS in CS or related; proficient in C/C++ or Python, strong CS fundamentals, Linux/UNIX knowledge, excellent debugging and problem-solving, eligible for full-time roles in 2027.
Edgehog Trading: Proprietary firm specializing in systematic electronic options market-making.
BS/MS in EE/CE or related field, hands-on RTL design in Verilog/SystemVerilog, familiarity with ModelSim/QuestaSim/Vivado/Quartus and synthesis flow, Linux proficiency, Python/C/C++ a plus, eagerness to apply AI tools and learn HFT.
Verilog, SystemVerilog, ModelSim, QuestaSim, Vivado, Quartus, Linux, Python, C, C++
Farmington Hills or Rosemont or Pennsylvania or Houston or Dallas or Golden
HybridFull Time
GHD: Global professional services firm specializing in engineering and architecture.
0+ YOEBachelor's degree required, 0-2 years developer experience, proficiency in JavaScript and Python, front- or back-end development, data visualization and manipulation skills.
Illinois or Mississippi or Montana or North Carolina or Louisiana or Maryland or Maine or Minnesota or Nebraska or Missouri or North Dakota or New York or New Jersey or New Mexico or Nevada or Ohio or South Carolina or Texas or Rhode Island or South Dakota or Vermont or Tennessee or Virginia or Washington or Utah or Wisconsin or West Virginia or Oregon or Wyoming or Oklahoma or Pennsylvania or Colorado or Alabama or Arizona or California or Connecticut or District of Columbia or Florida or Iowa or Arkansas or Idaho or Kansas or Delaware or Georgia or Indiana or Kentucky or Michigan or Massachusetts or New Hampshire
$65k-$173k/yrRemoteFull Time
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
2+ YOE2+ years systems analysis and application development; 1+ year development in Java/C++/Python; Agile experience; 1+ year with AI/generative AI, Confluent Kafka, and LLMs such as Gemina or Claude.
Java, C++, Python, Confluent Kafka, Gemina, Claude
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
1+ YOEMaster's in Computer Science or related and 1 year experience developing backend/service-layer software. Requires Java, Python, PostgreSQL, MongoDB, TDD practices, and Agile development experience.
Illinois or Washington or Florida or New York or Colorado or New Jersey or Massachusetts or Maryland or Georgia or Tennessee or California
$70k-$80k/yrRemoteFull Time
Motorola SolutionsNYSE: MSI: Provides mission-critical communications and public safety technology.
1+ YOE1+ years of hands-on AI development or implementation, bachelor\u0002s degree in computer science/business or related field, experience with LLMs and Salesforce integrations, familiarity with Python and analytics tools.
DataDelivers: Customer data platform for the restaurant industry.
2+ YOE2+ years full stack development experience with React, Python, SQL and AWS; ability to read and improve existing codebase, consume/develop REST APIs, and work in a hybrid team environment.
Software Engineer – 2027 Internship Program (June Start)
Chicago, Illinois, United States
$150k-$200k/yrOnsiteInternship
Old Mission: Quantitative proprietary trading firm specializing in global market making.
Currently pursuing Bachelors or Masters in CS/CE or similar, 3.0+ GPA, junior standing with graduation Dec 2027 or May 2028, comfortable with C++, Python or TypeScript, strong CS fundamentals, able to start June 1, 2027.
San Francisco or Seattle or Dallas or Austin or Chicago or Atlanta or New York or San Diego
$100k-$120k/yrHybridFull Time
JacobsNYSE: J: Global provider of professional engineering and technical services.
1+ YOE1-3 years software development experience, bachelor's in CS/AI/data science, proficiency with AI/LLM APIs and frameworks, Python and JavaScript/TypeScript skills, Git and CI/CD experience, Docker/Podman familiarity.
Python, TypeScript, JavaScript, LangChain, LangGraph, CrewAI, PydanticAI, Model Context Protocol (MCP), Anthropic Claude API, OpenAI API, OpenAI Codex, Claude, Cursor, GitHub, GitHub Copilot, SQL, Docker, Podman, React, HTML, CSS, FastAPI, Flask, Express, Pinecone, Weaviate, pgvector, Microsoft Azure, Microsoft Fabric, Google Cloud, Amazon Web Services, Power BI
Enova InternationalNYSE: ENVA: Provides digital lending and credit solutions through machine learning.
2+ YOE2+ years professional software development experience with Java, Python, or Go; frontend experience with TypeScript and React; strong SQL and API/microservices experience; bachelor’s degree or equivalent; willingness to join on-call rotation.
Headlands Technologies: A global proprietary trading firm utilizing quantitative algorithms.
Degree in a technical field required; strong statistics and ML experience; software development skills in Java, C++, or Python; interest in systematic trading; internship experience preferred; collaborative and results-focused.
DRW: Technology-driven principal trading firm operating in global financial markets
Degree in CS/Math/Physics or related expected by June 2027; proficiency in C++, Java or Python; experience with multi-threading, network programming (TCP/IP), API design, data processing, and algorithms.
California or Florida or Georgia or Illinois or Indiana or Minnesota or Montana or North Carolina or New Hampshire or New Jersey or New York or Ohio or Oregon or Pennsylvania or Virginia
$75k-$125k/yrRemoteFull Time
Vitu: Digitizes vehicle titling and registration for businesses and governments.
2+ YOEBachelor's in CS or equivalent, Scrum Developer certification, 2+ years experience building scalable web applications across front-end and back-end stacks; proficiency with HTML, CSS, JavaScript, PHP/Python/Ruby/C#, and SQL Server; agile experience.
HTML, CSS, JavaScript, PHP, Python, Ruby, C#, SQL Server