83 software systems engineer jobs at 46 companies in Union, IL
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Software Engineer, AI & Product Systems
Naperville, Illinois, United States
$80k-$150k/yr OnsiteFull Time
3+ YOE3+ years software engineering; Node.js/Next.js/TypeScript; PostgreSQL or Supabase; REST/OAuth2/JWT; AI/LLM integration; CI/CD; security and reliability.
Node.js, Next.js, TypeScript, PostgreSQL, Supabase, REST, OAuth2, JWT, WebSockets, GitHub Actions, Vercel, n8n, SOQL
1mo
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Senior Software Engineer, Design Systems
North Chicago, Illinois, United States
$97k-$184k/yr HybridFull Time
5+ YOEExpert React and TypeScript skills, front-end design-system experience, Claude Code skills and agentic AI workflow development, Python/Node.js backend capability, Storybook/GitHub/Axe proficiency, accessibility (WCAG) and strong communication.
React, TypeScript, Python, Node.js, Storybook, GitHub, Axe, Claude Code, Figma, OutSystems, Angular, HTML, CSS, MCP
3w
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Senior Systems Engineer
Des Plaines, Illinois, United States
$100k-$150k/yr OnsiteFull Time
10+ YOEBachelor's degree in engineering with 10+ years experience, strong networking and routing knowledge, Linux and C/C++ proficiency, hardware/software troubleshooting, ability to obtain US security clearance and to travel.
Linux, C/C++, MANET, HAIPE
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Principal/Sr. Principal Systems Engineer
Rolling Meadows, Illinois, United States
$109k-$204k/yr OnsiteFull Time
5+ YOESTEM degree with 5+ years (Principal) or 8+ years (Sr Principal) experience, proficiency in systems thinking, model-based systems engineering, simulation/mission modeling, and listed software/tools; U.S. citizenship and active government clearance required.
MATLAB, C, C++, CUDA, VHDL, OpenCL, SysML, Python, Cameo, Rhapsody, AFSIM, STK, BRAWLER, ATCOM, ONESAF, DOORS, ClearCase, ClearQuest
1mo
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Systems Engineer/Principal Systems Engineer (Integration & Test)
Rolling Meadows, Illinois, United States
$88k-$163k/yr OnsiteFull Time
2+ YOEUS citizen able to obtain/maintain government clearance (SAP/Secret); BS/MS/PhD in EE/ME or related; 2+ years (Systems) or 5+ years (Principal) experience; troubleshooting hardware/software/firmware; test planning and execution; DOORS, MBSE/Cameo, MATLAB, C/C++, Java, Python familiarity.
DOORS, Cameo, MATLAB, C, C++, Java, Python
6d
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Staff Software Engineer
Chicago or Dallas
$190k-$250k/yr HybridFull Time
12+ YOE12+ years software engineering experience, expert JavaScript/TypeScript and backend languages, cloud and distributed systems experience, hands-on agentic AI/LLM experience, strong database and CI/CD knowledge.
React, Next.js, C#, Node.js, Java, REST, GraphQL, Azure, AWS, GCP, LangChain, AutoGen, Semantic Kernel, MCP, Kafka, Event Hubs, Kinesis, Docker, Kubernetes, SQL, NoSQL, CI/CD
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Sr. Software Developer
Pleasant Prairie, Wisconsin, United States
$143k/yr OnsiteFull Time
5+ YOEBachelor's in Computer Engineering or related plus 5+ years progressive software development experience; experience with databases, web applications, software security, version control, scalable system design, SQL/NoSQL, Linux/Windows/Mobile/Web platforms, CI/CD, containerization, and cloud services.
Database software, SQL, NoSQL, Version Control Software, Linux, Windows, CI/CD, containerization, cloud services
2w
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Software Engineer
Naperville, Illinois, United States
$132k-$147k/yr HybridFull Time
3+ YOEMaster's in CS/SE or related with 3 years development experience; experience designing enterprise systems and platform engineering; Java, AWS (Lambda,S3,EC2,Glue,DynamoDB), MySQL/PostgreSQL/DynamoDB, Docker/Kubernetes.
Java, REACT, EC2, S3, Lambda, Glue, DynamoDB, PostgreSQL, MySQL, Docker, Kubernetes
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Staff Software Engineer - FinOps
Lake Forest, Illinois, United States
$124k-$207k/yr RemoteFull Time
5+ YOEBachelor's or equivalent,5+ years software engineering experience,FinOps and cloud financial governance expertise across AWS/GCP/Azure,fullstack and API development,Infrastructure-as-Code (CloudFormation,CDK,Terraform),distributed systems.
AWS, GCP, Azure, CloudFormation, CDK, Terraform
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Software Engineer
Schaumburg, Illinois, United States
$84k-$106k/yr HybridFull Time
BS/MS in EE, Computer Engineering, or Computer Science; experience with C/C++, Linux/Unix, real-time embedded systems; Git and Jira; exposure to Docker or Podman; strong debugging, communication, and Agile experience; work onsite 3 days/week.
Docker, Podman, Git, Jira, C/C++, Linux, Unix
2w
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HVAC Controls Systems Engineer
Arlington Heights, Illinois, United States
$91k-$140k/yr OnsiteFull Time
6+ YOEAdvanced or university degree in a relevant field,6+ years system design and integration experience, mastery of AutoCAD and BIM, hardware design oversight and software architecture experience, strong communication and mentoring skills.
AutoCAD, BIM, Revit
1w
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Staff Software Engineer - GenAI
Oak Brook or California
$134k-$228k/yr HybridFull Time
10+ YOEBachelor's degree in CS/EE required,10+ years software engineering experience with 2+ years working with LLMs/agentic AI; experience with Python, LLM tools, distributed systems, and leading cross-functional AI productization.
LangChain, LangGraph, CAMEL, LlamaIndex, AutoGen, FAISS, Weaviate, Pinecone, Python, Node.js, REST, gRPC, GCP, AWS, Azure
2d
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Principal Software Engineer, Core Services
Wayne or Naperville
$160k-$185k/yr HybridFull Time
10+ YOE10+ years software engineering experience, bachelor’s in CS or equivalent, deep TypeScript/Node.js skills, cloud-native and distributed systems experience, leadership and mentoring experience.
TypeScript, Node.js, NestJS, EC2, Lambda, S3, SNS, SQS, Docker, Kafka, React, Kubernetes, GitHub Copilot, Claude Code, OpenAI Codex
3w
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Sr. Software Engineer - AI Platforms and Automation
United States or Chicago or Houston or Rosemont
$140k-$200k/yr RemoteFull Time
7+ YOE7+ years software/platform engineering experience; strong Python and AWS experience; production systems, CI/CD, Docker/Kubernetes, SQL/PostgreSQL, and experience with LLMs or AI-enabled applications.
Python, Amazon Bedrock, Lambda, Glue, S3, IAM, CloudWatch, MWAA, Airflow, CI/CD, Git, Docker, Kubernetes, Terraform, SQL, PostgreSQL, LLM APIs, LangChain, LangGraph, LlamaIndex, Claude Code, GitHub Copilot, Cursor, RDF, OWL, SPARQL, SHACL, FHIR, SNOMED CT, LOINC, RxNorm, ICD-10, CPT, vector databases, embeddings
2w
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Android Software Engineer II
Schaumburg, Illinois, United States
$81k-$117k/yr HybridFull Time
3+ YOE3+ years OO experience with Java/Kotlin, Android app and system debugging, strong software design and algorithms, B.S. in CS or related, experience with AI-assisted development tools and excellent communication.
Java, Kotlin, GitHub Copilot, Microsoft Visual Studio Code, Firebase Crashlytics, Real Time Databases, AOSP, Linux, logcat
1w
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Lead Software Engineer, Full Stack
Riverwoods or Plano or McLean
$179k-$225k/yr OnsiteFull Time
4+ YOEBachelor's degree,4+ years software engineering experience,1+ year cloud experience; expertise with Hadoop/HBase/Kafka/NiFi and AWS; strong communication and production systems experience.
Cloudera, HBase, Kafka, NiFi, Hadoop, AWS EC2, AWS MSK, AWS Lambda, AWS Glue, AWS DocumentDB, DynamoDB, Microsoft Azure, Google Cloud
2mo
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Software Test Engineer (Oak Brook, IL, US)
Oak Brook, Illinois, United States
$87k-$133k/yr HybridFull Time
2+ YOEBachelor's in engineering with 2+ years in software test for embedded systems; strong Python/MATLAB scripting; test frameworks; CAN/LIN protocols; version control; and defect tracking.
Python, MATLAB, Robot, PyUnit, Pytest, CANalyzer, CANoe, INCA, Git, Azure DevOps, GitLab, GitHub, Polarion, Doors, Jira
1mo
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Software Engineer – Test Equipment (Onsite)
Rockford, Illinois, United States
$87k-$165k/yr OnsiteFull Time
5+ YOEU.S. citizenship required. STEM degree (Bachelors with 5+ yrs or Advanced Degree with 3+ yrs). Experience developing software that interfaces with hardware-based test/HIL/ATE systems; Python, C++, TCL/Bash, Linux/Windows; configuration management and OOD.
Python, TCL, C++, Bash, LabVIEW, Linux, Windows, Automatic Test Equipment (ATE), Hardware-in-the-Loop (HIL)
1mo
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Lead Embedded Software Engineer (66954)
Franksville or Plymouth or Waukesha
$105k-$154k/yr HybridFull Time
4+ YOEBachelor's degree, 4+ years embedded systems/software experience. Proficiency in C/C++, Embedded Linux, networking protocols, RTOS concepts, unit testing and SDLC tools; Agile experience; ability to travel up to 10%; no immigration sponsorship.
C, C++, Embedded Linux, Serial, TCP/IP, Ethernet, UML, RTOS, GoogleTest, GoogleMock, xUnit++, Jira, Git, Continuous Integration (CI), Test-Driven Development (TDD), Agile Scrum
9h
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Engineer - Merch Systems
Bolingbrook, Illinois, United States
$88k-$125k/yr HybridFull Time
3+ YOEBachelor's degree or equivalent experience, 3–5 years of software engineering experience, programming and scalable application development expertise, and familiarity with Agile, CI/CD, cloud, DevOps, testing, and debugging.
o9, Blue Yonder, Oracle APEX, Oracle PL/SQL, Atlassian Jira, CI/CD, DevOps, AI-assisted software development tools, generative AI, prompt engineering
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