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520 mid level software engineer jobs at 303 companies in Illinois

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Mid-Level Software Engineer - USA
United States or Mountain View or New York City or Dallas or Miami or Chicago
HybridFull Time
Cognify Analytics
Cognify Analytics: A technology delivering scalable software solutions.
3+ YOE3–6 years of software development; proficient in multiple languages; strong frontend and backend framework experience; cloud, containers, CI/CD; familiar with AI/ML integration.
React, Next.js, Node.js, Spring Boot, FastAPI, Django, Flutter, AWS, Azure, GCP, Docker, Kubernetes, Terraform, Pulumi, CloudFormation, Kafka, RabbitMQ, SQS, Datadog, Grafana, Prometheus, OpenTelemetry, PostgreSQL, MongoDB, Redis, DynamoDB, Elasticsearch, GraphQL, gRPC, WebSocket, GitOps, OAuth 2.0, JWT, RBAC
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Mid Software Developer
O'Fallon, Illinois, United States
OnsiteFull Time
Chenega Corporation
Chenega Corporation: Provides professional government, defense, and facility support services.
2+ YOEMinimum 2 years relevant experience (or HS/GED +6 yrs); experience with AWS (S3, EC2, Lambda), Python, shell scripting, TypeScript, Node.js/Express, ASP.NET Core, C#, Postgres, Kubernetes, Docker, .NET Core, Linux, React, Java, and SQL; AWS Developer certification and TS/SCI clearance preferred; must pass background and drug screening.
Amazon S3, EC2, Lambda, AWS SDK API tools, RDS, Python, Python Flask, Bash, TypeScript, Node.js/Express, ASP.NET Core Web API, Swagger (OpenAPI), C#, Postgres, Kubernetes, Docker, .NET Core, Linux, React, JavaScript, Java, SQL, Gitlab/DevOps, ESRI, Microsoft Word, Microsoft Excel, Microsoft Office
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Senior Software Engineer, Mid-Frequency Platform
Chicago or London or New York City
$175k-$225k/yr HybridFull Time
DRW
DRW: Technology-driven principal trading firm operating in global financial markets
5+ YOE5+ years platform-level software development; strong CS fundamentals; Python or modern language; experience with large-scale data; strong analytical skills; distributed team experience.
Python, Spark, Delta Lake, Iceberg, Kafka, Airflow, Argo Workflows, SQL, AWS, Docker, Kubernetes, Splunk, Prometheus, Grafana, Sentry
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2mo
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Low-Level C++ Software Engineer
Chicago, Illinois, United States
$100k-$140k/yr OnsiteFull Time
Wolverine Trading
Wolverine Trading: Proprietary trading, asset management, and execution services firm.
2+ YOE2+ years professional C++ experience; high-performance apps; multi-threading; C++17/20; BS in CS/CE; strong problem-solving and communication.
C++, Multithreading, Performance profiling
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Civil Engineer - Mid-Level
Chicago, Illinois, United States
$69k-$100k/yr HybridFull Time
Sargent & Lundy
Sargent & Lundy: Engineering and consulting services for the power industry.
1+ YOEABET-accredited BSCE required, 1-2 years civil design experience, proficiency with Microsoft Office, strong written/verbal communication and teamwork; FE/EIT, civil software, and site design experience valued.
Microsoft Office, Civil 3D, StormCad, PondPack, MicroStation, AutoCAD, Python, MATLAB, Microsoft Excel
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Software Engineer
Naperville, Illinois, United States
RemoteFull Time
AmpliFI Loyalty Solutions
AmpliFI Loyalty Solutions: Provides cloud-based loyalty solutions for financial institutions.
3+ YOEMaster's degree in Computer Science or Software Engineering with three years of related software development experience; design, cloud-native architectures, Java backend, AWS, databases, and containerization.
Java, AWS, React, Docker, Kubernetes, PostgreSQL, MySQL, DynamoDB, Glue
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Software Engineer
Illinois or Kentucky or Kansas or Idaho or Washington or Michigan or Florida or California or Texas or Oklahoma or Tennessee or North Carolina or Minnesota or Massachusetts or Indiana or Georgia or Arizona or Missouri or Alabama or Connecticut or District of Columbia or South Carolina or Oregon
$79k-$119k/yr HybridFull Time
Relativity
Relativity: AI-powered platform for legal discovery and data intelligence.
Backend software engineering role; experience with C# or Python; strong distributed systems knowledge; cloud experience preferred.
C#, Python, GitHub Actions, Azure, Kubernetes
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Software Engineer
Westchester, Illinois, United States
$72k-$108k/yr HybridFull Time
Ritchie Bros.
Ritchie Bros.NYSE: RBA: Conducts global auctions for heavy equipment and industrial assets.
2+ YOE2-4 years of software engineering experience; proficiency in .NET, React, relational databases, and CI/CD; strong problem-solving and communication skills.
dotnet, react, typescript, javascript, ms sql, postgresql, ci/cd, git
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Software Engineer
Chicago, Illinois, United States
$90k-$110k/yr HybridFull Time
Midtown Athletic Clubs
Midtown Athletic Clubs: Operates premium athletic clubs and resort-style sports facilities.
3+ YOEBS in Engineering/IT or equivalent, 3+ years software development, experience with TypeScript/JavaScript, Node.js/Express.js/NestJS or React, REST APIs (JSON/XML), agile methodologies, and collaboration tools.
TypeScript, JavaScript, Node.js, Express.js, NestJS, React, JSON, XML, Microsoft Azure DevOps, JIRA, Microsoft Teams, Postman, Microsoft SQL Server, Flutter, Azure, AWS
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Software Engineer
Chicago, Illinois, United States
$108k-$123k/yr HybridFull Time
PMA Consultants
PMA Consultants: Provides project management and construction consulting services for infrastructure projects.
3+ YOE3+ years software engineering experience including C# and C++; experience with MFC, SmartBear, database-integrated applications, Jira, version control, and automated testing; Bachelor’s in CS or related required.
C++, C#, Microsoft Foundation Class, SmartBear, Jira, TestComplete
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Software Engineer
Chicago, Illinois, United States
$108k-$140k/yr HybridFull Time
Reverb
Reverb: Marketplace for buying and selling new and used musical gear.
2+ YOE2-4 years software engineering; strong Ruby on Rails and JavaScript/React fundamentals; GraphQL familiarity; understanding web architecture; clear communicator; plus for AI workflows, TypeScript, Datadog, Docker, Kubernetes, and GitHub Actions.
Ruby, Rails, JavaScript, React, GraphQL, TypeScript, Datadog, Docker, Kubernetes, GitHub Actions
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Software Engineer
Chicago or Toronto
$100k-$125k/yr HybridFull Time
Vivid Seats
Vivid SeatsNASDAQ: SEAT: Online marketplace for buying and selling event tickets
4+ YOE4+ years professional software engineering experience, strong Java (Spring Boot preferred), REST API and event-driven service experience, familiarity with relational databases/MyBatis, CI/CD and automated testing, and strong communication skills.
Java, Spring Boot, MyBatis, CI/CD
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Software Engineer
Chicago or St. Louis or Philadelphia
$75k-$95k/yr HybridFull Time
ProSight Financial Association
ProSight Financial Association: Professional association for financial services research and training.
3+ YOE3+ years software engineering experience with .NET/C#, SQL, Microsoft Azure (Functions, App Services, DevOps), front-end skills (HTML, CSS, JavaScript, React.JS/Angular JS), containerization (Docker, Kubernetes), and CI/CD practices.
.NET, C#, SQL, Microsoft Azure, Azure Functions, Azure App Services, Azure DevOps, HTML, CSS, JavaScript, React.JS, Angular JS, Docker, Kubernetes, Microsoft SQL Server, MySQL, PostgreSQL, Terraform, ARM templates, PHP, CI/CD, RESTful APIs
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(Remote) Software Engineer
Blair or Wisconsin or Virginia or Minnesota or Texas or Tennessee or Massachusetts or Pennsylvania or Illinois or Georgia or Florida or North Carolina or Missouri or United States or Canada
$75k-$100k/yr RemoteFull Time
Harris Computer
Harris Computer: Provides mission-critical vertical market software and service solutions.
Proven software engineering experience with MSSQL, Python, C#, .NET Core and COBOL; Associates in CS/Engineering; strong problem-solving, communication, and ability to travel ~25% with valid passport.
MSSQL, Python, C#, .NET Core, COBOL, PowerShell, Azure, AWS, GitHub
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Senior Software Engineer
Chicago, Illinois, United States
$113k-$188k/yr HybridFull Time
Grainger
GraingerNYSE: GWW: Distributes maintenance, repair, and operating supplies to businesses.
3+ YOEBachelor's or equivalent,3+ years software engineering,2+ years Java,proficiency in Oracle/SQL,experience with Spring Boot and MDM or data engineering,strong problem-solving and communication skills.
Java, Spring Boot, Oracle, SQL, GitHub Copilot, Stibo STEP, Informatica MDM, Reltio, Semarchy
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2w
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Lead Software Engineer
McLean or Chicago
$179k-$225k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOE1+ MgmtBachelor's degree, 4+ years software engineering, 1+ year cloud experience, proficiency in listed languages and cloud platforms, leadership and mentoring experience.
JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, Go, Docker, Kubernetes, AWS, Google Cloud, Microsoft Azure
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Test Engineer (Functional / Mid-Level)
Scott AFB, Illinois, United States
OnsiteFull Time
DecisionPoint
DecisionPoint: Provides IT and cybersecurity services for federal government agencies.
3+ YOE3+ years software testing experience; Active Secret Clearance; IAT Level II certification; Jira experience; strong analytical and communication skills.
Jira, Postman, Angular, Java, Spring Boot, CI/CD
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2w
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Senior Software Engineer
Lisle, Illinois, United States
$92k-$138k/yr OnsiteFull Time
International Motors
International Motors: Manufacturer of commercial trucks, buses, and diesel engines.
3+ YOE3+ years professional software engineering or equivalent via degree plus experience; proficiency in server-side and frontend technologies, cloud platforms, Terraform; US work authorization required.
TypeScript, Python, Java, C#, Ruby, React, Angular, Vue, Azure, AWS, GCP, Terraform, NextJS, Tailwind, NestJS, Microsoft SQL Server, Apache Lucene, Jest
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Software Engineer, API
Chicago, Illinois, United States
$108k-$110k/yr HybridFull Time
Supernova Technology
Supernova Technology: Provides cloud-based digital software for securities-based lending.
3+ YOEBachelor's in CS/Engineering, 3+ years software development with API design, experience with Java, Spring Boot, AWS, OAuth/JWT, REST, Git, CI/CD, and testing frameworks.
RESTful Services, OAuth, JWT, Java, Spring Boot, AWS, Git, CI/CD
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Software Engineer II, RVC
Alabama or Arizona or California or Colorado or Connecticut or Florida or Georgia or Idaho or Illinois or Indiana or Iowa or Kansas or Louisiana or Maryland or Massachusetts or Michigan or Minnesota or Missouri or Mississippi or North Carolina or Nebraska or New Jersey or Nevada or New York or Ohio or Oklahoma or Oregon or Pennsylvania or South Carolina or Tennessee or Texas or Utah or Virginia or Washington or Wisconsin or Wyoming
$90k-$135k/yr RemoteFull Time
Storable
Storable: Provides technology platform for storage and specialty real estate operators.
3+ YOE3+ years software engineering experience, production WordPress expertise, PHP/MySQL/modern JavaScript, experience using AI-assisted development tools, strong engineering fundamentals and communication.
WordPress, WordPress REST API, PHP, MySQL, JavaScript, TypeScript, HTML, CSS, React, REST APIs, AWS, Codex, Claude Code, Cursor, GitHub Copilot, ChatGPT
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