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Python Java Jobs in Illinois (NOW HIRING)

3B Staffing LLC

Lead AI/Python Developer

Chicago, IL · On-site

$144K - $177K/yr

Develop and maintain web applications using Python (primary), Java, and Java Spring. * Design, build, and optimize RESTful APIs to integrate internal systems and external services. * Migrate existing ...

New

Judge Group, Inc.

Core Java - Intermediate

Chicago, IL · On-site

$60 - $61/hr

Our client is currently seeking a Core Java - Intermediate Must have skills Java/springboot AWS past data experience - spark language NICE to have skills kubernetes CICD pipeline python Additional ...

TRUCE Software

Senior Software Engineer (Platform)

Chicago, IL · On-site

$126K - $166K/yr

... Python, Java, C#, C++, PHP, JavaScript). • Working knowledge of at least one database (e.g., MySQL, SQL Server, PostgreSQL, DynamoDB). • Working knowledge of Linux/UNIX command line tools (e.g ...

SpotHero

Pricing Engineering Manager

Chicago, IL · On-site

Java/Python/Go, React, Postgres, AWS, Kubernetes. Preferred : • Experience with backend development Company : SpotHero is a consumer marketplace and mobility platform for off-street parking.

SpotHero

Pricing Engineering Manager

Chicago, IL · On-site

Required : • 5+ years of experience as a software engineer working on distributed systems in Python, Java, Kotlin, Go, or JavaScript/TypeScript. • 3+ years of experience managing engineers ...

Anagh Technologies, Inc.

Java Angular

Chicago, IL · On-site

$54 - $69.75/hr

4 Full Stack Engineers (React or Angular, Java/Spring, AWS), Capital One/Chicago, Hybrid, CTH - GC ... GoLang and Python nice to have - should have one or the other ideally, will give them a leg up

Pwc

GenAI Python Systems Engineer - Senior Associate

Rosemont, IL · On-site

$77K - $202K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Azure Solutions Architect Expert, Azure Data Engineer Associate,] is a plus - Skilled in programming languages like Python, Java, Scala - Proficient in SQL and relational databases - Experience with ...

Pwc

GenAI Python Systems Engineer - Senior Associate

Chicago, IL · On-site

$77K - $202K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Azure Solutions Architect Expert, Azure Data Engineer Associate,] is a plus - Skilled in programming languages like Python, Java, Scala - Proficient in SQL and relational databases - Experience with ...

Code Lab Technology

Java Developer

Highland Park, IL · On-site

$52 - $67.25/hr

Strong Development background in Java (Full Stack, preferred) * Hadoop, required 1 year ... Python, required-1 year * PCF preferred * If they have front end experience with Angular JS

Dellfor Technologies

java VM ware developer

Illinois City, IL · On-site

$80K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Title-Java developer Must Hava- Strong Python scripting skills, Java, VMware, Cassandra and experience working with Spring frameworks. Responsibilities: * Work as part of team to deliver on ...

Innovizant LLC

Java Developer/Architect

Schaumburg, IL · On-site

$61.75 - $83.50/hr

... Java, Python or C or C++ Experience in implementing and consuming Web Service technologies/APIs(SOAP, REST, JSON). Experience in Hibernate, Spring (boot, core, aop, mvc, orm) , Struts and related ...

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All JobsPython Java JobsPython Java Jobs in Illinois

Python Java information

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

To thrive as a Python/Java Developer, you need strong programming skills in both Python and Java, along with a solid understanding of software development principles and a relevant degree or equivalent experience. Familiarity with integrated development environments (IDEs) like PyCharm or Eclipse, version control systems such as Git, and frameworks like Spring or Django is typically required. Excellent problem-solving abilities, collaboration, and effective communication are crucial soft skills for this role. These skills and qualifications enable developers to build robust, efficient applications and work effectively within development teams to deliver quality software solutions.

Is Python Java still in demand in 2026?

Python and Java remain highly in demand for software development roles in 2026, as they are widely used in enterprise applications, web development, and data science. Proficiency in these languages, along with knowledge of frameworks and tools like Spring or Django, can enhance job prospects in the tech industry.

Is Python and Java enough to get a job?

Python and Java are popular programming languages for many software development roles, including those involving backend development, data analysis, and automation. However, employers often look for additional skills such as understanding of algorithms, data structures, version control, and relevant frameworks or tools. Gaining experience through projects, certifications, or internships can improve job prospects in these fields.

What can I do with Python and Java?

Python and Java are versatile programming languages used in software development, web applications, data analysis, and automation. Professionals with skills in both can work on backend development, build enterprise applications, or develop machine learning models, often using integrated development environments (IDEs) and version control tools. Combining these languages can enhance project flexibility and problem-solving capabilities.

How do Python and Java developers typically collaborate within a software development team?

Python and Java developers often work together on projects that require leveraging the strengths of both languages, such as integrating backend services (Java) with data processing or scripting (Python). Collaboration usually involves regular code reviews, shared documentation, and using APIs or microservices for communication between components. Developers may use tools like Git, Jira, or Slack to coordinate tasks and ensure seamless integration. Working closely with other team members such as front-end developers, QA analysts, and project managers is also common to deliver well-rounded solutions.

What is a Python Java developer?

Python Java developers are software engineers who have expertise in both the Python and Java programming languages. They are skilled in building, maintaining, and optimizing applications that may use either or both languages, depending on project requirements. These developers can work on web development, data analysis, backend systems, and more, leveraging the strengths of both languages. Their versatility makes them valuable for teams that need solutions spanning multiple technologies.

What is the difference between Python Java vs Software Developer?

AspectPython Java
Primary LanguagePython and Java
Common CertificationsOracle Certified Java Programmer, Python Institute Certifications
Work EnvironmentSoftware development, web applications, data analysis
Industry UsageTech companies, finance, healthcare, startups

Python Java developers typically possess certifications in Java and Python, work in similar environments, and are employed across various industries. Both roles focus on software development, but Python Java developers often specialize in projects requiring both languages, such as web applications, data analysis, or backend systems. Understanding the differences helps employers and candidates align skills with job requirements effectively.

What are popular job titles related to Python Java jobs in Illinois? For Python Java jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Python Java jobs in Illinois look for? The top searched job categories for Python Java jobs in Illinois are:
What cities in Illinois are hiring for Python Java jobs? Cities in Illinois with the most Python Java job openings:
Python Java jobs near you
Infographic showing various Python Java job openings in Illinois as of August 2026, with employment types broken down into 2% Internship, 86% Full Time, 6% Part Time, and 6% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Lead AI/Python Developer

3B Staffing LLC

Chicago, IL • On-site

$144K - $177K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

This engineer will play a crucial role in enhancing AI applications to improve customer experience and optimize internal processes. The ideal candidate will have experience developing chatbots, implementing AI agents, and working with advanced AI technologies such as LangChain, LlamaIndex, CrewAI, and Vector Databases. Additionally, they will work on fine-tuning AI models, optimizing Prompt Engineering, RAG, and GraphRAG methodologies to deliver intelligent, high-performing solutions.
As a key contributor, you will collaborate with stakeholders to leverage key performance indicators (KPIs), build data pipelines, ensure proper permission structures, and implement robust security measures within our AI ecosystem.
Key Responsibilities

  • Develop and maintain web applications using Python (primary), Java, and Java Spring.
  • Design, build, and optimize RESTful APIs to integrate internal systems and external services.
  • Migrate existing applications to a microservices-based architecture using containers.
  • Develop AI-driven applications leveraging LangChain, LlamaIndex, CrewAI, Vector Databases, and Neo4J.
  • Implement AI agents and optimize Prompt Engineering, RAG, GraphRAG, and fine-tuning techniques.
  • Develop and enhance AI-powered chatbots and automation solutions to improve business efficiency and user experience.
  • Work with OpenAI, Google AI, and open-source models to drive innovation.
  • Build and manage API-based data pipelines for real-time and batch data processing.
  • Ensure robust security and compliance standards in data processing workflows.
  • Enhance deployment automation and infrastructure reliability, working closely with DevOps and Operations teams.
  • Monitor system performance, latency, and API reliability through observability tools.
  • Write clean, efficient, and testable code, ensuring best practices in code reviews, unit testing, and performance optimization.
  • Document development processes and architectural decisions following internal frameworks.
  • Work in an Agile environment, participating in sprints, stand-ups, and retrospective meetings.
Required Qualifications
  • 5+ years of Full Stack Development experience with a strong emphasis on Python.
  • Proficient with Java full Stack development.
  • Experience with AI/ML application development, including Chatbots, AI agents, and Prompt Engineering.
  • Hands-on experience with LangChain, LlamaIndex, CrewAI, and Vector Databases.
  • Expertise in cloud-native architectures and deploying applications using microservices and containers.
  • Proficiency in FastAPI and Pydantic for API development and data validation.
  • Strong knowledge of Graph Databases (Neo4J) and ML data pipelines.
  • Familiarity with OpenAI, Google AI, and open-source AI models.
  • Experience with DevOps, CI/CD pipelines, and observability tools.
  • Proven track record in developing AI applications that enhance automation and customer engagement.
Excellent problem-solving skills and ability to work in a fast-paced, collaborative environment

Apply