24 principal software engineer jobs at 13 companies in Marengo, IL
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Principal/Sr. Principal Software Engineer
Rolling Meadows, Illinois, United States
$109k-$163k/yr OnsiteFull Time
5+ YOEBachelor's in CS/CE or equivalent experience, 5+ years engineering experience (Principal) or 8+ years (Sr Principal). Proficiency in C++, embedded Linux/VxWorks, scripting (Python/Bash), version control (Git/GitLab/GitHub/Bitbucket/ClearCase), Agile/Waterfall; U.S. citizenship and active Secret clearance required.
C++, C++11, Python, Bash, Batch, Linux, VxWorks, Waterfall Methodology, Agile, Git, GitLab, GitHub, Bitbucket, ClearCase, Rally, Jira, DevSecOps, Model-based Engineering
3w
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Principal Software Engineer
Downers Grove or Willingboro
$140k-$180k/yr OnsiteFull Time
15+ YOE15+ years software engineering with enterprise architecture, cloud (Azure) modernization, microservices, eCommerce, AI/LLM production experience, and strong people mentoring and technical leadership.
React.js, Next.js, TypeScript, C#, .NET Core, Java, Python, Go, Kafka, Azure Service Bus, Event Hub, Cloudflare, Akamai, Azure Front Door, SQL Server, PostgreSQL, Redis, Cosmos DB, MongoDB, AKS, Azure App Service, Azure Functions, Azure SQL, Key Vault, Azure AD/Entra ID, Azure Monitor, Terraform, Bicep, Azure DevOps, GitHub Actions, Helm, Open Telemetry, Application Insights, Jaeger, Grafana, Prometheus, k6, JMeter, Azure Load Testing, Pinecone, Weaviate, pgvector, OpenAI, Anthropic, Gemini, LangChain, LangGraph, CrewAI, Playwright, Cypress, Pact, OAuth 2.0, OpenID Connect, Azure Data Factory, Azure Databricks
1mo
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Principal Engineer, Software Engineering
Rockford, Illinois, United States
$135k-$205k/yr OnsiteFull Time
8+ YOEBachelor's in CS/EE/EElec and 8+ years (or Master's and 5+ years); 5+ years embedded C; 3+ years DO-178C; software for generator/bus power control; authorized to work in U.S. without sponsorship.
embedded C, DO-178C
2w
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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
2w
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Principal Software Engineer
Rosemont, Illinois, United States
$200k/yr HybridFull Time
5+ YOEBachelor's in CS or related plus 5 years (or Master's plus 3),3+ years Salesforce and Lightning Web Components, Apex, Git, Visual Studio Code, HTML/CSS/JavaScript, Agile/DevOps experience, strong communication and design skills.
Salesforce CRM, Lightning Web Components, APEX, Git, Visual Studio Code, HTML, CSS, JavaScript, Agile
2w
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Principal Engineer, Product Cybersecurity
Round Lake or Raleigh
$120k-$165k/yr HybridFull Time
5+ YOEBachelor's degree plus 5+ years or master's degree plus 3+ years in a related field; expertise in medical device cybersecurity, threat modeling, testing, vulnerability analysis, and secure software practices.
Black Duck, Coverity, CWE, CVE
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Principal Software Engineer
Westchester, Illinois, United States
$171k-$257k/yr RemoteFull Time
12+ YOESenior/principal-level data engineer with deep Azure BI/data stack expertise (Microsoft Fabric, Synapse, Power BI), expert Python and SQL, architecture and platform design, and strong communication and mentoring skills.
Microsoft Fabric, Azure Synapse Analytics, Power BI, Azure, Python, SQL
2w
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Principal Software Engineer II (Cloud)
Deerfield, Illinois, United States
$166k-$282k/yr OnsiteFull Time
8+ YOEBachelor's degree and 8+ years or high school diploma/GED and 11+ years; complex application coding, Unix/Linux, C++/Java/Node, SOA, team leadership, mentoring, and financial decision experience.
Microsoft Azure, OpenStack, Harness IDP, Infrastructure as Code, Kubernetes, Azure Kubernetes Service (AKS), Istio, Terraform, Ansible, Unix/Linux, C++, Java, Node, Service Oriented Architecture (SOA)
3w
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Principal AI Engineer - Aerospace & Defense
Itasca, Illinois, United States
$15k-$180k/yr FieldFull Time
Hands-on experience building and shipping production AI and mobile solutions, expertise in prompt engineering, RAG, MLOps, forward-deployed integrations, full-lifecycle engineering, and technical leadership at principal level.
Retrieval-augmented generation (RAG), MLOps, CI/CD, iOS, ERP, CRM, IoT
1w
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Senior or Principal Transmission Planning Engineer
Kennesaw or Goodlettsville or Palm Beach Gardens or Charlotte or Spring or Lake Mary or Tampa or Pensacola or Overland Park or Plano or Fort Worth or Emeryville or San Luis Obispo or Naperville or United States or Glendale or Birmingham or Kennewick or United States
$110k-$179k/yr HybridFull Time
6+ YOEBachelor's degree in electrical engineering or related field, 6+ years in transmission planning, power-system modeling software experience, PSCAD, ISO systems knowledge, and leadership experience.
GE PSLF, TARA, Gridview, PowerWorld, PSSE, PROMOD, PSCAD, ISO, RTO, NERC, FERC
1mo
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Principal Agentic AI Security Engineer
North Chicago, Illinois, United States
$142k-$269k/yr HybridFull Time
4+ YOEExtensive cybersecurity and security-engineering experience, strong software engineering with Python, experience building agentic AI systems, and ability to develop technical standards and guidance.
Python, LangChain, AutoGen, MCP, Claude Code, Cursor, GitHub Copilot, Aider, SIEM, EDR, SOAR
4w
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Principal Piping Engineer - ASME Section III, Class 1
Kennesaw or Kennewick or Plano or Fort Worth or Naperville or Glendale or Overland Park or Baton Rouge or Palm Beach Gardens or Englewood or Charlotte
$150k-$180k/yr OnsiteFull Time
15+ YOEBachelor's in Mechanical/Civil Eng, PE license,15+ years piping design and ASME Section III Class 1 experience, pipe stress analysis expertise, ANSYS and pipe-analysis software familiarity, strong communication and leadership.
AutoPIPE, ME 101, Peps, PIPESTRESS, Caesar II, Tpipe, NuPipe, SuperPipe, ADL PipePro, Microsoft Suite, ANSYS
2mo
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Principal AI Architect - Remote
Lombard, Illinois, United States
$125k-$170k/yr RemoteFull Time
10+ YOE10+ years in software engineering and enterprise architecture; proven production AI/ML and Generative AI delivery; expertise in LLMs, RAG, embeddings, vector DBs, agents; Python; cloud (Azure); DevOps, CI/CD, containerization, Kubernetes; Terraform/Bicep; AI governance and privacy.
Python, Microsoft Azure, Terraform, Bicep, Kubernetes, LLMs, RAG
2w
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Principal Payment Tech Development Manager
Riverwoods or McLean or Chicago
$138k-$173k/yr OnsiteFull Time
5+ YOERequires 5+ years of payment technology R&D and 2+ years supporting business clients; high school diploma/GED required. Preferred engineering, computer science, or technology degree and EMV experience.
EMV, D-PAS, Mobile D-PAS, L2 tools
1mo
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Senior Principal Payment Tech Development Manager
Riverwoods or McLean or Illinois
$162k-$203k/yr OnsiteFull Time
6+ YOE4+ MgmtRequires 6+ years of payment technology R&D, 4+ years supporting business clients, and 4+ years managing people. High school diploma required; engineering or technology degree preferred.
D-PAS, Mobile D-PAS, EMV, EMV Functional, EMV Security
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