Top Software Engineer Jobs in Madison, WI

Design, develop, and deploy Python- and Java-based scalable REST APIs for a multi-tenant web platform. Collaborate with product, data science, and clinical partners, and ensure software quality, security, and engineering best practices.

Design, build, manage, and scale Zendesk's Search infrastructure (self-managed clusters and AWS services). Improve automation, evaluate cloud-native alternatives, manage clusters, optimize cost, and protect API performance while operating large systems at scale.

Design, build, and maintain scalable web applications, APIs, and backend services across multiple stacks. Make architectural decisions, remediate technical debt, lead client communication and demos, participate in agile teams and code reviews, uphold testing and debugging practices, and contribute to internal best practices and thought leadership.

Senior hands-on engineer owning Prebid/header-bidding wrapper and client-side monetization. Implement and maintain Prebid.js/Server integrations, optimize on-page performance/Core Web Vitals, work with GAM/GPT/IMA, deploy services on GCP, and ensure reliability at scale.

Design, enhance, and maintain backend APIs and integrations for the VA Beneficiary Travel Self-Service System. Implement secure, performant services for automated claim processing, collaborate in two-week agile sprints, support CI/CD and zero-downtime deployments, perform testing, documentation, code reviews, troubleshoot production issues, and ensure compliance with VA standards including security and 508 accessibility.

Join Twilio as a Staff Software Engineer to design and build scalable, reliable communication systems. Collaborate with cross-functional teams, mentor engineers, drive technical direction, perform architecture and code reviews, and deliver high-quality production services in a remote-first environment.

Own and evolve core trading platform services: design and build cloud-native .NET microservices, APIs, and high-availability distributed systems. Drive architecture, reliability, monitoring, incident response, and mentor engineers while occasionally contributing to React/TypeScript frontend work.

Lead design, development, and implementation of Salesforce solutions (LWC, Apex, Visualforce) including Experience and Commerce Cloud and Accounting Seed. Build integrations (REST/SOAP, payment gateways), CPQ and Marketplace apps, mentor developers, perform code reviews, and optimize platform performance and reliability.

Lead backend technical strategy and hands-on implementation to migrate on-prem systems to Azure, decompose a .NET monolith into service-based architecture, define data models and API contracts, ship customer-facing features with CI/CD and observability, and mentor engineers across the cross-functional Platform team.

Design, build, and maintain scalable brokerage systems including gRPC microservices and a React admin UI. Lead regional engineering initiatives, mentor engineers, act as incident commander, troubleshoot production issues, and collaborate with global teams to support multi-market growth.

Design, implement, and maintain scalable brokerage systems and middle/back-office services (gRPC microservices, React admin UI). Lead regional recruitment and reliability, mentor engineers, act as incident commander, collaborate with global teams, troubleshoot issues, and build solutions supporting multi-language/currency markets and regulatory requirements.

Lead design, implementation, and deployment of core platform tooling enabling secure, cloud-native application delivery. Integrate with defense systems, own architecture, mentor engineers, contribute to open source, maintain documentation, and participate in a shared 24x7 on-call rotation.

Lead modernization of internal platform tooling to 12-factor apps, delivering full-stack services (Go/Python + React/Vue), instrumenting observability (Grafana/Prometheus/Loki), driving Kubernetes-native GitOps (ArgoCD/GitLab CI), mentoring developers, and automating infrastructure with Ansible/Terraform on private/bare-metal clouds.

Lead architecture and technical strategy across an infrastructure platform ecosystem. Drive hands-on architectural improvements to graph engine and backend services, reduce technical debt, establish standards, champion AI-first engineering practices, run architecture/code reviews and mentorship, and collaborate with product and leadership to ensure scalable, extensible systems.

Design, develop, and maintain complex, enterprise-scale software features and services across the OneStream CPM platform. Lead technical design, implement UI and APIs, ensure JSON/XML contract compatibility, improve performance and reliability, mentor engineers, participate in code reviews, and support CI/CD, testing, and production operations. Use AI-assisted development tools responsibly to accelerate development.

Design, develop, and maintain backend services and data ingestion pipelines; own recurring ingestion runs and validate data quality; maintain CI/CD, deployments, monitoring, and incident response; automate operational work; ensure secure handling of healthcare data and collaborate with product, data, and engineering teams to improve reliability and production readiness.

Design, build, and scale backend systems and APIs for high-transaction consumer products. Collaborate with product, credit, compliance, support, and analytics teams. Contribute to code reviews, technical planning, security, and operational excellence. Mentor peers and promote engineering best practices.

Design, build, and maintain full-stack features across Java backends and React frontends; write automated tests; support production systems and CI/CD pipelines; integrate AI/ML features; participate in architecture reviews; triage incidents and improve observability and operational runbooks; collaborate in Agile squads with global teams.

Lead full‑stack modernization of a legacy .NET/SQL Server payment-integrity platform. Build modular Angular frontends and resilient .NET microservices, improve APIs, optimize database performance, embed security/privacy, use AI coding agents to accelerate refactors, and drive delivery with strong observability and testing practices.

Design, build, deploy, and operate backend services, APIs, integrations, and web applications. Own end-to-end features, improve CI/CD and observability, troubleshoot cross-service issues, participate on-call, and collaborate with product and leadership to deliver reliable production systems.

Lead initiatives in designing and building large-scale distributed data systems and ML infrastructure, while collaborating across various engineering teams.

Design, build, and own large-scale distributed backend systems in Go to process billions of events and petabytes of data. Lead architecture, reliability, observability, and performance efforts; improve service communication and data pipelines; debug production at scale; mentor engineers and share learnings publicly.

Lead full-stack development using React, Node and TypeScript. Design scalable architecture, write and review code, ensure performance, accessibility and security, mentor off-shore teams, participate in Agile ceremonies, support production (including weekends/off-hours), and collaborate with cross-functional teams to deliver business-critical applications.

Lead and mentor engineering teams to design and deliver scalable, high-performance systems. Define technical roadmaps, set code quality standards, drive architecture and technical debt resolution, collaborate with Product and Design, make technology decisions, lead hiring and interviews, and research new tools to solve complex problems while advocating for engineering priorities and timely feature delivery.

Lead design, development, and support of enterprise infrastructure and services. Drive architecture discussions, prototypes, capacity planning, and system launches. Troubleshoot performance, collaborate across teams and open-source communities, document solutions, and support on-call rotations to ensure reliable, scalable cloud and Linux-based systems.