Top Senior Software Engineer Jobs in Madison, WI

Design and build scalable systems for Upstart Bank, translating regulatory requirements into software, improving reliability, and ensuring audit-readiness while collaborating with multiple teams.

The Senior Software Engineer will design and build scalable backend services for loan origination, improving reliability and operational efficiency. Responsibilities include modernizing infrastructure, supporting partner onboarding, and collaborating across teams to enhance lending processes.

Develop full-stack features for both parent-facing and physician platforms using Django and Hotwire. Collaborate with product managers and improve health outcomes for children. Take ownership of projects and implement high-quality software.

The Full Stack Software Engineer will design, maintain scalable solutions, and collaborate with teams to enhance software quality, focusing on Ruby on Rails and AI integration.

The Full Stack Software Engineer will design and maintain scalable applications, focusing on Ruby on Rails, and collaborate with teams to enhance software quality and performance. Key responsibilities include troubleshooting, optimizing systems, and integrating AI solutions.

The Senior Full Stack Engineer will design and operate identity systems, implement AI-driven efficiencies, mentor engineers, and ensure high-quality code in an AI-first environment.

Develop, deploy, and maintain the UDS Registry and related tools (Pepr, Lula). Lead architecture and implementation, integrate with defense systems, participate in on-call rotation, contribute to open source, produce documentation, mentor engineers, and influence product direction with user-focused design.

As a Senior Software Engineer, you'll collaborate to build and maintain automation capabilities, contribute to AI solutions, and ensure scalability, improving the user experience with software solutions.

Remote backend engineer role building web services and data pipelines using Scala and Java. Requires Akka/Pekko (streams, actors, clustering, persistence, HTTP), functional programming with Cats/Cats Effect, streaming/distributed system design, AWS services (Kinesis, DynamoDB, SQS/SNS, API Gateway, IAM, KMS), SQL optimization, CI/CD, and hands-on high-availability architecture experience.

Design, develop, and maintain advanced software systems. Collaborate with product, design, and engineering teams. Write clean, scalable code, perform code reviews, debug complex issues, and stay current with technologies.

Join an early-stage platform team to scale and mature a mortgage origination platform. Work across the stack to improve distributed systems, performance, observability, and infrastructure tooling, and help define engineering standards and frameworks for growth.

Join Goodie AI's AI Lab to design and build scalable front-end solutions and contribute to backend infrastructure and DevOps. Lead React development, collaborate with designers and data scientists, integrate APIs, ensure performance, and participate across the full application lifecycle to deliver high-quality AI platform features.

Responsible for implementing and managing infrastructure as code (Terracore/Terraform), automating CI/CD with Jenkins, managing AWS services and Amazon EKS/Kubernetes, scripting in Bash/Python, implementing monitoring and security best practices, supporting production via on-call rotations, and collaborating with development and QA teams.

Own and scale AWS infrastructure using Terraform; design CI/CD and GitOps pipelines on Kubernetes (Helm, ArgoCD); manage service mesh (Istio), observability, security, capacity planning, cost optimization, and incident response; mentor engineers and document runbooks.

Build and maintain scalable full‑stack applications for hotel customers, write clean maintainable code, collaborate with product and engineering peers, mentor engineers, participate in code reviews, and drive product improvements with minimal direction.

Build and maintain the AI-powered learning platform across a TypeScript/React frontend and Python/FastAPI backend. Integrate LLMs for classification, extraction, personalization, and conversation practice. Design scalable APIs, develop real-time interactive features, apply AI-assisted development workflows, write well-tested code, and collaborate with product, design, and education teams to optimize learning experiences and A/B tests.

Design and develop software solutions enhancing user experience for Governance features, contribute to open-source software, communicate technical designs, and support team quality through reviews.

The role involves building core infrastructure for orchestrating intelligent agents, defining platform primitives, and ensuring systems scale and reliability. Collaboration with internal teams and end-to-end system ownership are essential.

As a Software Engineer, you'll design and develop microservices using a cloud-native tech stack, with a focus on financial services and secure systems.

Design, build, and maintain full-stack web applications across frontend and backend. Own features end-to-end, write scalable Python services, optimize SQL and schemas, integrate APIs, profile and improve performance, and deliver cross-device user experiences with React/Typescript and CSS. Collaborate in agile teams and mentor junior engineers.

Design, build, and maintain advanced Android applications using Kotlin and Jetpack Compose. Collaborate on architecture and development strategy, implement dynamic UIs, ensure performance and quality through reviews and testing, and support full lifecycle delivery. Influence Android best practices and work with BLE, location, or IoT integrations when needed.

As a Staff Engineer, Fullstack, you'll enhance social care services by developing web applications and APIs while leading complex projects integrating Uno Health with Findhelp's platform.

Build and maintain scalable, high-performance web applications and data-visualization platforms using React, Redux, Vite, and TypeScript. Collaborate with cross-functional teams to design features, write clean code and tests, debug, contribute to APIs, mentor junior engineers, and apply modern development practices including CI/CD and accessibility considerations.

The Staff Software Engineer will architect and code backend services and ML models, integrate systems, ensure quality, and mentor engineers in the AI & Strategy Engineering team.

Build and maintain eBPF-based network monitoring instrumentation in the Datadog Agent, debug production incidents spanning kernel/eBPF/agent runtime, research and prototype solutions for high-throughput, low-latency network observability, and provide technical input to product and architecture decisions.