Top Tech Jobs & Startup Jobs in Chicago, IL

Lead architecture, design, and implementation of scalable, high-performance Angular applications. Collaborate with Product, Design, Backend, and QA in Agile teams to deliver features, drive code reviews, testing, performance optimization, and mentor junior engineers while aligning work to technical strategy.

Deploy, maintain, and troubleshoot business applications and related infrastructure. Gather and translate requirements, design and configure systems, develop test cases, document processes, provide training, implement upgrades, monitor system health, and ensure scalability, maintainability, and performance.

Design, develop, optimize, and deploy high-performance Spark/Scala data processing applications and ETL pipelines using the Cloudera Hadoop ecosystem. Collaborate with analysts and data scientists, ensure data integrity and security, troubleshoot performance, and implement version control and CI/CD for production Spark workloads.

Design and develop scalable Snowflake data models (conceptual, logical, physical) to support reporting. Collaborate with analysts, engineers, and report developers, optimize models for Power BI, ensure data lineage/governance, participate in testing, and support report developers.

Design, develop, optimize, and maintain Oracle databases and PL/SQL code. Build CI/CD pipelines with Jenkins, ensure availability, security, backups and disaster recovery, perform tuning and data modeling, troubleshoot issues, and mentor junior engineers.

Design, develop, and maintain automated test scripts and frameworks (Serenity/Selenium) using Java and Node. Execute pipeline and API testing (Postman), analyze requirements, prepare test plans, coordinate with onshore/offshore QA and cross-functional teams, participate in Scrum, debug automation issues, and support system integration, UAT, regression, and production defect fixes.

Lead development of a full-stack React Native and React application, define code standards, build high-quality cross-platform mobile UIs, integrate native APIs, fix performance issues, publish to App Store and Play Store, write automated tests, and contribute to open-source fixes.

Design and execute performance/load tests for microservices and web applications, identify bottlenecks, analyze CPU/memory/network metrics, report defects, collaborate with developers to reproduce and resolve issues, and improve testing processes and tools.

Design and architect large-scale distributed big data solutions. Develop, test, and deploy Spark/Scala applications, build ETL pipelines with Cloudera Hadoop components, optimize Spark and platform performance, ensure data integrity and security, and implement version control and CI/CD for data processing workflows while collaborating with data scientists and analysts.

Lead architecture and development of cloud-native, scalable Java/Spring Boot microservices. Implement event-driven systems (Kafka/Pub/Sub), GraphQL and REST APIs, caching with Redis, NoSQL databases, CI/CD, containerization, and infrastructure-as-code. Mentor backend engineers and collaborate with frontend, DevOps, and data teams to ensure performance, reliability, and observability.