Top Tech Jobs & Startup Jobs in Chicago, IL

Design, build, and maintain high-performance native iOS applications. Collaborate with cross-functional teams to define and ship features, ensure app performance and responsiveness, fix bugs, integrate RESTful APIs and third-party libraries, participate in code reviews, and evaluate new technologies to improve development efficiency.

Design and architect large-scale distributed big data solutions using Java, Spark, and Scala. Build and optimize ETL pipelines and Spark applications on the Cloudera Hadoop ecosystem (HDFS, Hive, Impala, HBase, Kafka). Ensure data integrity, performance tuning, CI/CD for Spark apps, and collaborate with data scientists and analysts to deliver analytics solutions.

Lead and deliver strategic programs from planning through execution. Drive strategy, budgeting, resource allocation, risk mitigation, KPI tracking, and continuous improvement. Build and lead cross-functional teams, manage stakeholders and customer communication, and ensure financial accountability to achieve program objectives.

Lead and execute performance, load, and stress testing using tools like JMeter and Postman. Create and maintain test plans, scripts, and cases; identify and document bottlenecks and defects; collaborate with developers to reproduce and resolve issues; track results and continuously improve testing processes and tools.

Lead hands-on front-end development using Angular to design, build, and review scalable, maintainable, low-latency web applications. Collaborate with stakeholders and cross-asset UI teams, follow agile practices, drive improvements, and adopt UI/UX best practices and standard frameworks.

Lead QA maturity model assessments, define gaps and implement improvements. Drive a Gen AI proof-of-concept for AI-driven automation and predictive testing. Manage QA projects using objective metrics, align QA strategy with business goals, and collaborate with cross-functional teams to standardize best QA practices for e-commerce and retail systems.

Lead the Discover Phase by conducting user research, defining project scope, and creating information architecture and early-stage prototypes to set product design strategy.

Design, develop, test, optimize, and deploy large-scale Spark/Scala data processing and ETL pipelines on Cloudera Hadoop. Collaborate with data scientists and analysts, ensure data integrity and security, troubleshoot performance, and implement version control and CI/CD for Spark applications.

Senior full‑stack developer responsible for building maintainable, scalable web applications using .NET, React/Next.js and Azure. Design RESTful APIs, implement CI/CD with Git/YAML, write unit tests, use non-relational databases (Cosmos DB/MongoDB), and collaborate in Agile teams to deliver robust solutions.

Design, build, and maintain large-scale data pipelines and ETL processes using PySpark/Apache Spark, SQL/NoSQL stores, Hadoop, and Kafka. Work with cloud platforms (AWS/Azure/GCP), data lakes and warehouses, and Python for data manipulation. Lead projects, perform systems analysis, ensure delivery under deadlines, and collaborate across teams. CI/CD and containerization experience is a plus.