Top Senior Software Engineer Jobs in Chicago, IL

Design and develop scalable, high-availability software for NinjaOne’s IT Operations products. Build and improve Java and Kotlin applications, implement design patterns, solve enterprise-scale challenges, optimize data structures and databases, develop REST services, and contribute to client-server systems supporting millions of endpoints. Collaborate with engineers to maintain high-quality testing and reliable product delivery.

Design and develop scalable, highly available software systems for NinjaOne’s IT Operations platform. Build Java and Kotlin applications, implement enterprise design patterns, optimize systems serving millions of endpoints, and contribute production code. Responsibilities include REST service development, relational database work, client-server messaging, caching, scalability improvements, and quality testing. The role collaborates with engineers to deliver reliable cloud services supporting worldwide operations.

Design, develop, launch, and maintain scalable backend systems and APIs used by merchant and partner integrations. Collaborate with engineers and stakeholders, balance speed with system quality, debug code, conduct code reviews, and write tested, extensible software. The role requires experience with distributed systems, Python or Kotlin, AWS, MySQL, and Kubernetes, along with strong communication and ownership of professional growth.

Join as an early founding full-stack engineer to architect, build, and deploy a scalable platform serving AI-driven voice applications. You will own frontend and backend development, design infrastructure with the CTO, and deliver reliable production systems for enterprise customers.

Design, implement, and maintain scalable serverless backend services and responsive Next.js front-end components. Build data scrapers and integrations, improve CI/CD and IaC, mentor junior engineers, and collaborate with product and clients to solve complex compliance problems.

Design, build, and operate high-throughput, low-latency ad-serving infrastructure processing millions of requests per second. Optimize GPU-powered TensorRT inference, feature stores, model serving, benchmarking, experimentation tooling, and system reliability. Partner with machine learning engineers to productionize models and own systems through design, deployment, observability, capacity planning, incident response, and optimization.

Lead design and implementation of a petabyte-scale unified virtual memory and system software stack for accelerator-based large-scale clusters. Build custom allocators, runtimes, schedulers, and Linux kernel/driver components. Integrate and optimize HPC workload managers, ensure high-throughput resource management, and remove kernel-space bottlenecks for massive parallel jobs.

Develop fullstack web applications, enhance platform performance, collaborate on high-impact opportunities, and ensure stable, scalable solutions. Engage in rapid iterations and be a committed team player.

Design and implement CIAM backend services for authentication and authorization. Integrate identity systems, manage secure flows, and automate infrastructure.

Build and own the technical roadmap: design AI-first interfaces and APIs, architect scalable ETL pipelines, develop data models for ML features, ship autonomous B2B workflows (PO generation, vendor sync, schedule optimizations), and establish engineering standards, CI/CD, and mentoring.

Lead software engineering work for secure, scalable financial technology products. Design, develop, test, troubleshoot, review, and stabilize production software; lead adoption of validated AI-assisted engineering practices; automate recurring remediation; and evaluate vendor and internal architectural solutions. Requires advanced Golang experience, cloud-native development, SDLC expertise, agile practices, application resiliency, security, and financial-services IT knowledge. Preferred experience includes Envoy, web ingress, OIDC, OAuth2, authentication, and authorization.

Senior Full Stack Engineer for Grainger's Home Page and Display Customizations team. Build and maintain reusable React components, design and evolve backend services, improve observability and reliability, modernize legacy systems, and contribute to micro-frontend architecture. Mentor junior engineers, lead team projects, and collaborate with stakeholders to deliver high-quality customer-facing features.

As a Billing & Analytics Software Engineer, you'll design and maintain the billing pipeline, integrate billing systems, and develop customer-facing analytics dashboards to support revenue recognition and operational observability.

Leads technical direction for enterprise software built with C#/.NET, Blazor, and Azure while maintaining transitional React applications. Oversees architecture, production readiness, secure engineering, testing, CI/CD, incident response, delivery planning, and React-to-Blazor migrations. Coaches engineers, coordinates technical execution, manages dependencies and risks, and establishes reusable Microsoft-centric engineering standards. Revit and AEC domain experience are required.

Design, develop, test, and deploy supply chain software for inventory, warehouse, and fulfillment systems. Lead technical decisions, mentor engineers, coordinate cross-functional Agile projects, decompose work, delegate tasks, and promote strong development and testing practices. Build monitoring systems that ensure business-process correctness and support high-volume, data-intensive applications.

Design and build shared backend services, APIs, distributed primitives, and developer tooling used by engineering teams. Own complex platform capabilities from architecture through production support, troubleshoot Linux-based environments, improve scalability and reliability, and participate in on-call rotations. Mentor engineers through code reviews and technical guidance while developing cloud-native microservices with Golang, gRPC, and Protobuf.

Design, implement, test, and modernize backend services and integrations (TypeScript/Node.js and C++). Lead large projects, write technical specifications and API contracts, enforce coding standards, coach engineers, and drive legacy-to-modern migrations within online banking and core systems.

Develops, tests, documents, maintains, and enhances software solutions using established design principles and development practices. The role addresses defects, security vulnerabilities, and performance improvements; participates in requirements analysis, planning, and user story development; documents standards and changes; and collaborates with and mentors software engineers. Work involves .NET technologies, source control, software development lifecycle practices, and potentially Azure or AWS cloud development.

Develops, tests, documents, enhances, and maintains software solutions using established design principles and technical standards. Reviews systems, resolves defects, remediates security vulnerabilities, improves performance, analyzes user stories, and implements business solutions. Participates in software development processes, stays current with technology, mentors engineers, and helps plan and prioritize team development work.

Build and maintain Python services supporting pharmacy and medical claims, data pipelines, REST APIs, and internal applications. Develop features for claims, eligibility, and drug-pricing workflows; write SQL for MySQL databases; and participate in design, code review, deployment, testing, and production support. Collaborate across departments, handle sensitive healthcare data, and use AI-assisted development tools while ensuring code correctness and quality.

Build and ship end-to-end product features across an author analytics dashboard, marketing site, free tools, billing, email, and AI-assisted functionality. Design data models and APIs, integrate third-party services, develop production LLM features, and maintain testing, monitoring, performance, and observability. The role includes code review, technical documentation, independent product decisions, and close collaboration with the founder in a remote-first environment.

The Lead Software Engineer will design and develop a secure SaaS product, collaborate with teams, ensure performance standards, participate in code reviews, and engage in the full software development lifecycle, focusing on energy efficiency solutions.

Lead backend software engineering initiatives and developers building scalable customer rewards redemption services. Drive architectural modernization toward microservices, collaborate with product, fraud, and customer experience teams, deliver cloud-based solutions, mentor engineers, evaluate code, and apply technologies including Go, Python, Java, SQL, Docker, Kubernetes, and AWS.

Build and scale front-end experiences for Alteryx AI products using React, TypeScript, and micro frontend architecture. Develop reusable UI components, integrate backend services and AI workflows, improve accessibility, performance, testing, and reliability, and guide technical direction. Collaborate across Product, Design, Backend, and Platform teams while mentoring engineers and driving modernization, architecture, and developer experience improvements.

Build and own production software systems spanning embedded systems, real-time control, cloud services, and data pipelines. Responsibilities include architecture, coding, testing, reliability engineering, observability, incident response, technical design reviews, cross-functional hardware collaboration, hiring, and mentoring. The role requires strong systems fundamentals, distributed systems experience, debugging ability, and proficiency in at least one major programming language.