268 senior software developer jobs at 126 companies in Sycamore, IL
1w
Save
Mark Applied
Hide
Senior Software Developer
Bedford Park, Illinois, United States
$120k-$140k/yr OnsiteFull Time
5+ YOE5+ years professional software development experience; strong C#, .NET, React skills; proficiency with Git, CI/CD, automated testing, AI-assisted development tools; bachelor's in CS/engineering or equivalent.
C#, .NET, React, Git, CI/CD, Microsoft Azure, AWS, Claude Code, Codex, GitHub Copilot, SQL, REST APIs
1w
Save
Mark Applied
Hide
Senior Software Developer
Bedford Park, Illinois, United States
$120k-$140k/yr HybridFull Time
5+ YOE5+ years professional software development experience; advanced proficiency with C#, .NET, React; Git; CI/CD and automated testing experience; bachelor's in CS/Engineering or equivalent.
C#, .NET, React, Git, Microsoft Azure, AWS, Claude Code, Codex, GitHub Copilot, SQL
2mo
Save
Mark Applied
Hide
Senior Software Engineer - Digital and Web
Naperville, Illinois, United States
$106k-$159k/yr HybridFull Time
6+ YOESenior software engineer with 6+ years of full-stack experience; Next.js/React, GraphQL, Node.js, MongoDB; Docker/Kubernetes; GA/SEO; e-commerce/subscription experience preferred.
React, Next.js, GraphQL, Node.js, MongoDB, Docker, Kubernetes, REST, WebSockets, XML, JSON, YAML, Tailwind, Bootstrap, SCSS, Google Analytics, Google Webmaster Tools, SEO
1mo
Save
Mark Applied
Hide
Senior Software Engineer
Westchester, Illinois, United States
$99k-$124k/yr RemoteFull Time
10+ YOEBachelor's in CS/IT, 10+ years software development with backend Java experience; proficiency in Python/Go, Spring Framework, cloud platforms, containerization, relational databases, CI/CD, and strong communication.
Java, Python, Go, Spring Framework, Spring Boot, Spring Data, Spring Security, MySQL, PostgreSQL, AWS, Azure, GCP, Docker, Kubernetes, React, Angular
2mo
Save
Mark Applied
Hide
Senior Software Developer
Charlotte or Morrisville or Yellow Springs or Morton Grove
HybridFull Time
7+ YOE7+ years software engineering experience; strong Java and Spring Boot skills; CI/CD and SDLC practices; identity and security fundamentals (OAuth2/OIDC, JWT); experience with Keycloak/Okta/Auth0/Entra ID preferred; strong communication.
Java, Spring Boot, OAuth 2.0, OIDC, JWT, Keycloak, Okta, Auth0, Entra ID, Angular, React, PKCE, SAML 2.0, CI/CD, API gateway
3w
Save
Mark Applied
Hide
Senior Software Engineer (55220)
Vernon Hills, Illinois, United States
$108k-$127k/yr HybridFull Time
8+ YOEBachelor's in CS/Engineering,8+ years developing commercial B2B software for web/mobile/cloud/desktop,expertise with C#/.NET and Microsoft Full Stack,Azure experience,Git/DevOps,CI/CD,strong design and problem-solving skills.
C#, .NET, Microsoft Full Stack, Microsoft Azure, Git, DevOps, MFC, Java, React, AWS, Google Cloud
1mo
Save
Mark Applied
Hide
Senior Software Developer - Web
Waukegan or Glenview
$96k-$148k/yr OnsiteFull Time
5+ YOEBachelor's in CS/IT or related, 5+ years web development, strong OOP and web architecture, experience with ASP.NET, MVC, C#, JavaScript, T-SQL, code versioning and CI/CD.
ASP.NET, MVC, C#, JavaScript, T-SQL, CI / CD tools
2mo
Save
Mark Applied
Hide
Senior Cyber Embedded Software Engineer
Schaumburg, Illinois, United States
OnsiteAll Commitments Available
Embedded software, cybersecurity, and reverse engineering experience; strong C/C++, Python; Linux; BS/MS in CS/CE/Software; US citizenship with ability to obtain clearance; TS/SCI preferred.
Ghidra, IDA Pro, Radare2, GDB, JTAG, Wireshark, ELF, PE, IP, TCP, UDP, TLS, SIP, SRTP, ARM, MIPS, PPC, x86, C, C++, Python, Linux
2mo
Save
Mark Applied
Hide
Senior Software Engineer - ERP
Rosemont, Illinois, United States
$108k-$134k/yr OnsiteFull Time
2+ YOEBachelor’s Degree in Engineering or Computer Science with 2-4 years, or High School Diploma/GED with 5-7+ years; JD Edwards ERP experience in wholesale/distribution; development and support of ERP applications; SDLC/ITIL familiarity.
Java, C, C++, JD Edwards, BI Publisher, Linux, JDEdwards
1mo
Save
Mark Applied
Hide
Senior Software Engineer
Lisle, Illinois, United States
$92k-$138k/yr OnsiteFull Time
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
1w
Save
Mark Applied
Hide
Senior Software Engineer
Chicago or Lake Forest
$113k-$188k/yr HybridFull Time
3+ YOEBachelor's or equivalent, 3+ years modern software engineering, experience with Python/Go/Java, React, cloud (AWS), Terraform, Kubernetes, CI/CD and DevSecOps, strong communication and mentoring skills.
Python, Go, Java, React, Kubernetes, AWS, Terraform, GitHub Actions, CI/CD, OPA
3w
Save
Mark Applied
Hide
Senior Software Engineer
Elgin, Illinois, United States
OnsiteFull Time
Bachelor's degree in engineering, 4+ years medical device experience, 1+ year embedded development, proficiency in C and assembly, experience with microprocessor-based devices, communication protocols, debugger use, FDA/ISO processes.
C, Assembly, Linux, I2C, SPI, RS232, Ethernet, Bluetooth, Wi-Fi, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
1mo
Save
Mark Applied
Hide
Senior Software Engineer, Integrations
Chicago or Woodridge
$115k-$210k/yr HybridFull Time
5+ YOE5+ years coding experience, B.S. in CS or equivalent, strong Python/C/C++/TypeScript skills, experience with firmware-to-application integrations, customer-facing troubleshooting, and building production software.
Python, C++, TypeScript, C
2mo
Save
Mark Applied
Hide
Sr. Software Engineer
Oak Brook, Illinois, United States
OnsiteFull Time
5+ YOEBS in CS or related field or equivalent; 5+ yrs distributed multi-tier software development; strong comms; lead experience; proficient in C#/NET, HTML/JS; SQL Server; API development; Agile; OOP/SOLID.
C#/.NET, HTML, JavaScript, jQuery, Angular 2+, Microsoft SQL Server, Entity Framework, API development, Git, TFVC, Visual Studio, Azure, AWS, Azure DevOps, N Telerik Kendo UI, NativeScript, Xamarin, Windows UWP, OOP, SOLID
1mo
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
Pampered Chef LTD - Senior Software Engineer
Addison, Illinois, United States
$125k-$135k/yr HybridFull Time
Senior full-stack engineer with strong JavaScript/TypeScript skills (React, Next.js, Angular), backend experience (Node.js, Java), AWS and Kafka familiarity, plus tooling experience (Jenkins, Bitbucket, Jira); able to lead code reviews and influence architecture.
React, Next.js, Angular, TypeScript, Node.js, Java, REST APIs, Kafka, AWS (EC2, S3, CloudFormation, Lambda), Jenkins, Bitbucket, Jira, Dynatrace, Snyk, AI-assisted development tools, Hybris
3d
Save
Mark Applied
Hide
Senior Software Engineer (Onsite)
Rockford, Illinois, United States
$87k-$165k/yr OnsiteFull Time
5+ YOESTEM degree with 5+ years of relevant experience or advanced degree with 3+ years; embedded C lifecycle experience, testing, verification, certification, and aerospace standards knowledge.
C, Assembly, Python, Tcl/Tk, MATLAB, Simulink, RTOS, BSPs, IBM Rational Synergy, Change, DOORS, DXL, TMS320F2812, PowerPC
2mo
Save
Mark Applied
Hide
Sr. Software Engineer
Wayne or Naperville
$120k-$135k/yr HybridFull Time
5+ YOE5–7 years backend engineering or intelligent systems with production impact; strong Python, CI/CD, and system design; experience with ML model APIs and cloud inference; familiarity with vector databases and retrieval systems.
Python, CI/CD, AWS Bedrock, Azure OpenAI, Google Vertex AI, PyTorch, Hugging Face Transformers, vLLM, FAISS, Pinecone, OpenSearch/KNN, LangChain, LlamaIndex, MLflow, Weights & Biases, Prometheus
2w
Save
Mark Applied
Hide
Senior Lead Software Engineer, Full Stack
McLean or Plano or Houston or Riverwoods
$209k-$262k/yr OnsiteFull Time
6+ YOE1+ Mgmt6+ years software engineering, 1+ year cloud experience, bachelor’s required, people management and cloud/AWS experience preferred, proficiency in JavaScript/Java/TypeScript/SQL/Python/Go.
JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, Go, Docker, Kubernetes, AWS, Microsoft Azure, Google Cloud
1mo
Save
Mark Applied
Hide
Senior Software Engineer, e-Commerce Fulfillment
Romeoville or United States or Michigan or Nebraska or Illinois or Nevada or New Hampshire or Tennessee or Minnesota or Texas or Connecticut or Virginia or Maine or Indiana or District of Columbia or Wisconsin or Montana or New York or Maryland or Missouri or Kansas or Utah or Pennsylvania or Washington or Colorado or Arkansas or California or New Jersey or Iowa or Louisiana or Rhode Island or Massachusetts or South Carolina or Mississippi or Kentucky or Florida or Oregon or Ohio or North Carolina or Arizona or Idaho or Georgia
RemoteFull Time
5+ YOE5+ years building high-scale backend applications and microservices; expertise in event-driven architectures, message brokers (Kafka/RabbitMQ), distributed transactions, cloud platforms, software design, testing, and mentoring.
Kafka, RabbitMQ, AWS, Azure, GCP, Java, JVM, .NET, C#
Explore Jobs