147 senior python developer jobs at 65 companies in Darien, WI
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Senior Applied ML Engineer
Middleton or Irving or Denver or Seattle
$125k-$184k/yr HybridFull Time
5+ YOE5+ years designing and deploying applied ML systems; expertise in computer vision and NLP; strong Python and ML frameworks; ML Ops; cloud platforms; clear communicator; degree in CS/ML or related field.
Python, PyTorch, TensorFlow, Hugging Face, MLflow, Kubeflow, AWS, Azure, GCP
2mo
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Senior Backend Software Engineer, Solve Voice
Austin or Madison or San Francisco
$145k-$217k/yr HybridFull Time
3+ YOE3+ years backend engineering; real-time systems (WebRTC/SIP); Python or equivalent; API design; async architectures; frontend basics.
Python, WebRTC, WebSockets, SIP, APIs, Async frameworks
2mo
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Senior Embedded Software Engineer-Innovation Team
Cottage Grove, Wisconsin, United States
OnsiteFull Time
Senior embedded software engineer with degree in CS/EE and experience in C/C++, RTOS, Python/JS, and cross-functional collaboration.
C++, C#, Java, C, Python, JavaScript, RTOS
1mo
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Senior Java Engineer (Hybrid)
Madison or Boston
$99k-$167k/yr HybridFull Time
5+ YOE5+ years AWS-backed Java development experience building Spring Boot and RESTful APIs; proficiency with Python and SQL; experience with integration, SDLC, testing, and cloud services; insurance experience preferred; ability to travel up to 10%.
Java, Spring Boot, RESTful API, Python, SQL, AWS, Microsoft Copilot, Claude Code
3mo
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Senior Staff Software Engineer
Madison or Austin
OnsiteFull Time
8+ YOE8+ years professional software development, strong Python and ReactJS experience preferred, good SQL and database knowledge, experience with cloud (GCP preferred), technical writing, design, and mentoring skills.
Python, ReactJS, SQL, GCP
1mo
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Senior Web/App Engineer
Janesville, Wisconsin, United States
$118k-$142k/yr OnsiteFull Time
5+ YOE5+ years software development experience; proficiency in Java, C#, Python, JavaScript; strong system architecture, design patterns, data modeling, cloud and application security knowledge; bachelor's in CS/Engineering preferred; experience with SaaS platforms (Adobe, Oracle) preferred.
Java, C#, Python, JavaScript, Adobe, Oracle
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
1mo
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Senior Data Engineer
Waukegan or Pleasant Prairie or Round Lake or Glenview or Kenosha
$96k-$148k/yr OnsiteFull Time
8+ YOEBachelor's degree,8+ years data engineering,5+ years Informatica PowerCenter,strong T-SQL and DB tuning,ETL development and troubleshooting; SSIS, Python, Azure, Snowflake or Databricks a plus.
Informatica PowerCenter, T-SQL, SSIS, Python, Azure, Snowflake, Databricks
2w
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Cloud Engineer, Senior
Madison, Wisconsin, United States
$69k-$158k/yr RemoteFull Time
Experience developing and supporting multi-cloud platforms, containerization, CI/CD pipelines, scripting (C, Python, Shell/Bash), and collaborating with infrastructure and application teams; bachelor’s degree and ability to obtain Public Trust.
C, Python, Shell, Bash, CI/CD, Cloud HPC, space-stack, UFS, containerization
2w
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Senior Lead Software Engineer, Full Stack
McLean or Plano or Houston or Riverwoods
$230k-$262k/yr OnsiteFull Time
6+ YOE1+ MgmtBachelor's degree,6+ years software engineering experience,1+ year cloud experience,1+ year people management experience; experience with JavaScript/Java/TypeScript/SQL/Python/Go,containers,and cloud platforms.
JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, Go, Open Source RDBMS, NoSQL, Docker, Kubernetes, AWS, Microsoft Azure, Google Cloud
1w
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Senior Software Engineer
Madison, Wisconsin, United States
$78k-$156k/yr OnsiteFull Time
4+ YOEBachelor's in CS/related or HS+4yrs experience, strong OOP, REST, relational DB and cloud experience, proficiency in multiple programming languages, Agile tools, and ability to perform duties with minimal oversight.
Postgres, SQL Server, JPA2, Hibernate, Entity Framework, Azure, AWS/SDKs, JIRA, Confluence, C++, Java, JavaScript, Python, SQL, PL/SQL, .NET, Google Web Toolkit, SpringBoot, Angular, GraphQL, CI/CD, ECS, Lambda
4d
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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
2w
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Senior Software Engineer – Sensor Acquisition
Waukesha, Wisconsin, United States
OnsiteFull Time
4+ YOEBachelor's in EE/CS/STEM and 4+ years software engineering experience; 2+ years in data acquisition and sensor interfaces; Linux, C/C++, Python, RTOS experience; familiarity with IEC/ISO 62304 and embedded product development.
C++, Python, C, Linux, Unix, I2C, SPI, UART, USB, CAN, IEC/ISO 62304, microservices
1mo
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Software Engineer
Sun Prairie, Wisconsin, United States
$70k-$100k/yr OnsiteFull Time
5+ YOEBachelor's degree,5+ years professional software development experience,proficiency with Java,Python or C#,REST/SOAP,cloud platforms (AWS/Azure/GCP),Git,CI,Agile and strong communication.
Java, Python, C#, RESTful, SOAP, AWS, Microsoft Azure, Google Cloud, Git
2w
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Cloud Engineer, Senior
Madison, Wisconsin, United States
$69k-$158k/yr OnsiteFull Time
Experience designing and supporting multi-cloud platforms, containerization, CI/CD pipelines, cloud HPC, scripting (C, Python, Shell/Bash), and collaborating with infrastructure and application teams; bachelor's degree and ability to obtain Public Trust.
C, Python, Shell, Bash, CI/CD, Cloud HPC, UFS, space-stack
1w
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Principal BIT Systems Engineer / Senior Principal BIT Systems Engineer
Rolling Meadows, Illinois, United States
$109k-$204k/yr OnsiteFull Time
8+ YOEU.S. citizen with active Secret clearance, relevant STEM degree, 5+ years engineering experience (Principal) or 8+ (Senior Principal); MATLAB, C/C++, Python, sensor/RADAR integration and test experience.
MATLAB, C++, Python
2mo
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Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles or Virginia or Sun Prairie
OnsiteFull Time
2+ YOEActive Top Secret/SCI clearance, bachelor’s degree in STEM, 2+ years backend development with Python/Node.js/Java, experience with ArcGIS Enterprise, containerization, API design, and geoprocessing workflows.
ArcGIS Enterprise, Python, Node.js, Java, Docker, Kubernetes, PostgreSQL/PostGIS, SQL Server, Azure, AWS, GCP
4w
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Senior Software Engineer Applied AI
Madison or United States
RemoteFull Time
7+ YOE7+ years building and operating production backend systems, production LLM/ML experience, cloud distributed-systems expertise, and disciplined practices for regulated environments.
Python, AWS, LLMs
2w
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Senior Information Security Engineer
Madison, Wisconsin, United States
HybridFull Time
8+ YOE8+ years in information security or related engineering, experience with hybrid cloud (Azure/AWS), scripting (PowerShell/Python), IaC/automation, incident/vulnerability detection, and strong communication.
Azure, AWS, PowerShell, Python, OpenAI Codex, Claude Code, Git
3mo
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Principal Software Engineer
Madison, Wisconsin, United States
$153k-$259k/yr OnsiteFull Time
Senior individual contributor with expertise in OO languages, REST/DB, cloud, Agile, and enterprise-scale digital engineering.
C, C++, Java, JavaScript, Python, SQL, PL/SQL, .NET, Google Web Toolkit, JPA, Hibernate, Azure, AWS, JIRA, Confluence
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