Backend Full Stack Developer Jobs in Chicago, IL

Job Overview: Pay Range: $60hr - $65hr Requirement/Must Have: Strong experience in Java and Spring Boot application development. Proven experience designing and developing REST APIs and microservices. Hands-on experience with React and TypeScript for frontend development. Experience building ETL/data processing solutions using Python. Working knowledge of Apache Airflow for workflow orchestration. Experience with Apache Spark for distributed data processing. Experience with Snowflake or comparable cloud data warehousing platforms. Strong understanding of modern software development practices, including testing, CI/CD, and agile methodologies. Experience working with AI-assisted engineering tools (e.g., GitHub Copilot, ChatGPT, Cursor, Codeium, or similar) within the software development lifecycle. Strong problem-solving, communication, and collaboration skills. Responsibilities: Design, develop, and maintain scalable backend services and RESTful APIs using Java and Spring Boot. Build and support microservices-based architectures in cloud-native environments. Develop responsive and user-friendly frontend applications using React and TypeScript. Design, build, and optimize data ingestion, transformation, and processing pipelines using Python. Develop and maintain workflow orchestration solutions using Apache Airflow. Implement large-scale data processing solutions using Apache Spark. Build and manage data solutions leveraging Snowflake and modern cloud data platforms. Collaborate with product, architecture, and engineering teams to deliver end-to-end solutions. Apply software engineering best practices including automated testing, code reviews, CI/CD, and observability. Utilize AI-powered development tools to improve code quality, productivity, testing, and delivery outcomes. Troubleshoot, optimize, and support production applications and data pipelines. Nice to Have: Experience in privacy, security, or data governance platforms. Experience with mutation testing, automated quality engineering practices, and test strategy improvements. Experience working in cloud environments (AWS preferred). Exposure to platform modernization and large-scale enterprise applications. Skills: Java. Spring Boot. REST APIs. Microservices. React. TypeScript. HTML/CSS. Modern JavaScript frameworks. Python. ETL Development. Apache Airflow. Apache Spark. Snowflake. CI/CD. Automated Testing. Agile Development. AI-Assisted Development Tools. Benefits Our Benefits Include: Medical, Dental, and Vision Insurance 401(k) Retirement Plan Health Savings Account (HSA) Disability Insurance (Short-Term and Long-Term) Life and AD&D Insurance Paid Sick Leave (where required by applicable state or local law) Supplemental Insurance Plans Identity Theft Protection Pet Insurance Employee Wellness Programs Employee Assistance Program (EAP) Career Growth and Professional Development Opportunities Disclaimer: Benefits eligibility, accrual rates, and usage limits may vary based on employment status, length of service, and work location. Paid Sick Leave is provided in strict accordance with applicable state and municipal mandates. Cynet Systems Inc. reserves the right to modify, amend, or terminate any benefit plans at any time in accordance with applicable laws. About Cynet Systems Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading technology staffing and workforce solutions company serving Fortune 500 companies, government agencies, and enterprise organizations across the United States and Canada. We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and professional staffing, powered by a high-performing recruitment engine operating across North America and Asia. As a nationally and locally certified Minority Business Enterprise (MBE), Cynet Systems is committed to helping organizations build high-performing teams while empowering professionals to grow rewarding careers. Our organization is certified to ISO 9001, ISO 14001, ISO 27001, and SOC 2 Type II standards, reflecting our commitment to quality, security, operational excellence, and customer success.