1

Senior Python Developer Jobs in Crystal Lake, IL

Senior Analytics Engineer

Vernon Hills, IL

$101.80K - $139.80K/yr

The Senior Analytics Engineer transforms curated data into business‑ready analytical assets ... Proficiency in Python, including PySpark, and SQL. * Strong understanding of cloud platforms such ...

... native Node.js and Python services. Responsibilities and Outcomes Technical Leadership ... Mentor engineers from junior to senior, fostering technical depth and career progression Delivery ...

... native Node.js and Python services. Responsibilities and Outcomes Technical Leadership ... Mentor engineers from junior to senior, fostering technical depth and career progression Delivery ...

... native Node.js and Python services. Responsibilities and Outcomes Technical Leadership ... Mentor engineers from junior to senior, fostering technical depth and career progression Delivery ...

next page

Showing results 1-20

Senior Python Developer information

See Crystal Lake, IL salary details

$53.3K

$137.7K

$189.1K

How much do senior python developer jobs pay per year?

As of May 31, 2026, the average yearly pay for senior python developer in Crystal Lake, IL is $137,685.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,800.00 and $158,600.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior Python Developer, and why are they important?

To thrive as a Senior Python Developer, you need advanced proficiency in Python programming, experience with software architecture, and a solid understanding of algorithms and data structures, usually backed by a degree in computer science or related fields. Familiarity with frameworks like Django or Flask, version control systems such as Git, and containerization tools like Docker are typically required, alongside knowledge of modern CI/CD pipelines. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with teams and mentor junior developers. Mastery of these skills ensures the delivery of scalable, maintainable software solutions and the ability to drive technical excellence within development teams.

What are some common challenges faced by Senior Python Developers when leading a development team?

Senior Python Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members and ensuring code quality across the team. They are also responsible for making architectural decisions, which requires staying updated on best practices and emerging Python frameworks. Additionally, coordinating collaboration between cross-functional teams (like DevOps, QA, and front-end developers) can be complex, especially in agile environments where requirements may shift rapidly. Overcoming these challenges helps foster a productive and innovative team culture.

What are the main responsibilities of a Senior Python Developer?

A Senior Python Developer is responsible for designing, developing, and maintaining complex software applications using the Python programming language. They lead the technical aspects of projects, mentor junior developers, and ensure code quality through code reviews and best practices. Additionally, they collaborate with cross-functional teams to gather requirements, solve technical challenges, and deploy scalable and efficient solutions. Senior Python Developers are also expected to stay updated with the latest trends and advancements in Python and related technologies.

What is the difference between Senior Python Developer vs Python Developer?

AspectSenior Python DeveloperPython Developer
Required ExperienceTypically 5+ years, with leadership and complex project experienceUsually 1-3 years, focusing on core Python skills
ResponsibilitiesDesigning architecture, mentoring, handling complex systemsWriting code, debugging, implementing features
CertificationsOptional but beneficial (e.g., Python certifications, cloud certs)Often not required
Work EnvironmentCollaborative teams, project planning, code reviewsDevelopment-focused, task-oriented

The main difference between a Senior Python Developer and a Python Developer lies in experience, responsibilities, and leadership. Senior developers handle complex projects, mentor others, and often participate in architecture decisions, while Python Developers focus on coding and feature implementation. Both roles are essential in tech companies, but the senior role requires more experience and broader skills.

What are the most commonly searched types of Python Developer jobs in Crystal Lake, IL? The most popular types of Python Developer jobs in Crystal Lake, IL are:
What are popular job titles related to Senior Python Developer jobs in Crystal Lake, IL? For Senior Python Developer jobs in Crystal Lake, IL, the most frequently searched job titles are:
What cities near Crystal Lake, IL are hiring for Senior Python Developer jobs? Cities near Crystal Lake, IL with the most Senior Python Developer job openings:
Infographic showing various Senior Python Developer job openings in Crystal Lake, IL as of May 2026, with employment types broken down into 76% Full Time, 15% Part Time, 1% Temporary, 7% Contract, and 1% Nights. Highlights an 92% Physical, 5% Hybrid, and 3% Remote job distribution, with an average salary of $137,685 per year, or $66.2 per hour.
Principal / Sr. Principal Electronics Engineer

Principal / Sr. Principal Electronics Engineer

Northrop Grumman Corporation

Rolling Meadows, IL

Full-time

Medical, Life, PTO

Posted 13 days ago


Northrop Grumman rating

8.1

Company rating: 8.1 out of 10

Based on 336 frontline employees who took The Breakroom Quiz

103rd of 512 rated manufacturers


Job description

RELOCATION ASSISTANCE: Relocation assistance may be availableCLEARANCE REQUIRED FOR START: NoCLEARANCE TYPE: SecretTRAVEL: Yes, 10% of the TimeDescriptionAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.

The successful candidate will join NorthropGrumman's Defense Systems (DS) Specialized Tactical Electronic Warfare Systems (STEWS) team in RollingMeadows, IL. The role focuses on the development, testing, and sustainment of legacy and advanced electronic systems for U.S. Air Force platforms, including RF microwave airborne RADAR, infrared (IR) sensors, laboratory test stations, and transportable flightline electronic warfare combat test sets.

Our team provides sustainment support for the US Air Force platforms. Our team members complete engineering, reverse engineering, and logistics solution efforts to solve complex obsolescence problems and ensure warfighter training, combat and supportability.

You will support execution of various program activities to include test system design and evaluation, design and development of RF systems and components, radar, power and/or electrical systems architecture, components, circuits, and products for aircraft and flight line. Theposition will research, develop, design, and test electrical components, perform equipment, systems, and design evaluations and provide general engineering support for defense or commercial systems.

The role demands handson troubleshooting of field failures, supplier coordination, and the ability to mentor junior engineers while interfacing with customers and program leadership.

Roles and Responsibilities include, but are not limited to:

  • Lead or support system integration activities, coordinating with crossfunctional teams to deliver endtoend system functionality.

  • Design, develop, integrate, test, and deploy hardware and system modifications.

  • Create and execute Verification and Validation (V&V) plans that ensure radarsystem requirements satisfy mission objectives and customer needs.

  • Diagnose hardware and subassembly failures, determine root causes, and implement corrective actions.

  • Facilitate smooth transitions from design to production.

  • Produce and maintain engineering documentation, including specifications, change notices, parts lists, bills of materials, test plans, test procedures, and test reports to support the engineering development lifecycle and program goals.

  • Establish milestones and monitor adherence to master plans and schedules.

  • Evaluate, integrate, and test hardware and software components to reduce development risk and investigate anomalies.

  • Interface with internal and external customers, delivering clear presentations and status updates.

  • Provide troubleshooting support for field failures, leveraging deep knowledge of both hardware and software interfaces within the system and subsystem components.

  • Offer technical assistance to Northrop and USAF technicians and collaborate with suppliers to resolve hardware issues.
    **This position may be filled at either Principal or Sr. Principal Level.

Principal Electronics Engineer Basic Qualifications:

Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline and5years of related engineering experience; or a Master's degree in a STEM discipline and3years of related engineering experience with:

  • Exposure to airborne RADAR and Electronic Warfare (EW)

  • Familiarity in C++, Python or MATLAB development and/or debugging

  • Familiarity with National Instruments (NI/Emerson) LabWindows/CVI or LabVIEW.

  • Understanding of Digital Signal Processing (DSP) algorithms implemented on FPGAs.

  • Familiarity with PathWave RF Synthesis (Genesys)

  • U.S. Citizenship and eligibility to obtain a US Government Secret security clearance.

or

Sr. Principal Electronics Engineer Basic Qualifications:

Bachelor's degree in Electrical Engineering or a closely related engineering discipline, with a minimum of 9 (nine) years of relevant experience or a Master's degree in a relevant STEM discipline and7(six) years of related engineering experience with:

  • Strong interpersonal, written, and verbal communication abilities, coupled with excellent organizational skills.

  • Proficiency with airborne RADAR and Electronic Warfare (EW)

  • Proficiency in C++, Python or MATLAB development and/or debugging

  • Proficiency with National Instruments (NI/Emerson) LabWindows/CVI or LabVIEW.

  • Proficiency of Digital Signal Processing (DSP) algorithms implemented on FPGAs.

  • Proficiency with PathWave RF Synthesis (Genesys)

  • Proficiency with Microsoft Office, Altium Designer, RF and Digital test and measurement equipment.

  • U.S. Citizenship and eligibility to obtain a US Government Secret security clearance.

Preferred Qualifications:

  • Proven experience with airborne RADAR Electronic Warfare (EW)

  • Proficiency in C++, Python or MATLAB development and/or debugging

  • Proficiency with National Instruments (NI/Emerson) LabWindows/CVI or LabVIEW.

  • Strong understanding of Digital Signal Processing (DSP) algorithms implemented on FPGAs.

  • Proficiency with PathWave RF Synthesis (Genesys)

Professional Experience in any of the following:

  • RADAR product data analysis

  • Software requirements definition and verification

  • Supplier Management of Hardware/Embedded Software system

  • Operations and Sustainment of fielded systems

  • Proposal development and review

  • Root Cause and Corrective Action Investigations

  • Test and evaluation of Software design solutions and tools

  • Experience with data analysis, simulation, and modeling tools (e.g., MATLAB toolboxes,)

  • Experience with configuration management, issue tracking/trending, and basic software engineering practices.

  • Proficiency in one or more technical languages: MATLAB/Simulink, Python; C/C++ embedded/real time implementations.

  • Ability to comprehend and analyze complex problems, develop solutions, and make decisions that impact the organization's credibility, operations and services.

  • Documented ability to interpret numerical data for reporting purposes and prepare and analyze data and figures.

  • Demonstrated ability to lead and collaborate in a team environment across with multiple engineering disciplines.

  • Ability to diagnose/troubleshoot/repair hardware components

  • Experience with test planning at the circuit card, equipment, and system level

  • Experience generating and diagnosing automated test software

  • Analog, Digital, RF, EMI / EMC signal integrity experience

Primary Level Salary Range: $108,800.00 - $163,200.00Secondary Level Salary Range: $135,800.00 - $203,600.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

What Northrop Grumman employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom


Northrop Grumman logo

About Northrop Grumman

Sourced by ZipRecruiter

At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible.

Industry

Space research administration

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

Year founded

1939