Top Software Engineer Jobs in Madison, WI

Lead a cloud-focused full-stack engineering team to design, build, and operate scalable, high-availability web platforms and APIs. Mentor engineers, improve architecture and test coverage, ship features in React/AWS container environments, and drive observability and resilience.

Translate design specs into pixel-perfect, responsive web interfaces using TypeScript, CSS3, and HTML. Follow design systems and accessibility (WCAG) standards, optimize frontend performance, resolve spec ambiguities, collaborate remotely via documentation and code reviews, and provide frontend expertise to support AI model evaluation.

Design, build, and maintain full‑stack features across frontend (TypeScript + React) and backend (Python, Node.js, or JVM languages). Own end-to-end development, testing, CI, databases, and cloud/distributed systems. Mentor engineers, participate in code reviews and pair programming, and work in an agile, remote team.

Senior full-stack engineer responsible for designing and building end-to-end features across frontend (TypeScript + React) and backend (JVM languages, Python/Node.js). Owns code quality, testing, CI, and collaborates in agile teams. Mentors junior engineers, participates in code reviews and pair-programming, and works with cloud, databases, and distributed systems. Remote role with occasional in-person meetups.

As a Software Engineer III, you will design, develop, and maintain high-quality software solutions, collaborating with cross-functional teams to ensure scalability and performance.

Design, build, and operate backend Go services and smart contracts that mint, burn, bridge, and reconcile wrapped assets across multiple chains. Own end-to-end delivery from smart contract deployment through API design, SLOs, and production rollout. Drive asset migration pipeline improvements, run on-call operations, build observability and runbooks, and mentor junior engineers.

Lead design and evolution of SentiLink's data platform for fraud detection. Architect scalable batch and streaming pipelines, improve reliability, performance, and observability, set engineering standards, mentor engineers, drive cross-team technical initiatives, participate in production support/on-call, and evaluate build-vs-buy and emerging technologies.

As a Senior Software Engineer, you will collaborate with product teams, optimize functionality, and develop cloud functions and backend services using Kotlin.

Design, build, and operate cloud-native, enterprise-grade SaaS services on Azure. Lead architecture and design, develop APIs and UIs, apply AI-enabled engineering tools, ensure observability, support production incidents, and drive reliability, performance, and CI/CD improvements across teams.

Design and deliver blockchain network infrastructure and platform APIs, lead multi-quarter initiatives (chain integrations, re-architecture, data migrations), define APIs/SLOs/observability and on-call ownership, ship SDKs and platform primitives, establish data contracts, and simplify cross-chain operations to enable analytics, ML, and data engineering teams.

Lead technical direction and delivery for the Acquisition & Onboarding full‑stack team. Build and maintain mobile (React Native/native) and web experiences, backend services at scale, and operational tooling. Drive architecture, mentor engineers, ensure reliability/monitoring/on‑call readiness, collaborate with product and design, and improve dev processes, testing, and release practices to impact conversion and retention.

The Senior Backend Software Engineer will design and maintain backend systems, optimize performance, ensure security compliance, and mentor junior engineers in a collaborative environment.

Design, develop, maintain, and enhance SmartCop public-safety applications across the software development lifecycle. Collaborate with cross-functional teams, use C#/.NET and MS SQL Server, consume/develop web services, apply object-oriented design, leverage AI-assisted development tools, participate in code reviews, and follow automated testing and quality-focused practices. Support deployment, troubleshooting, and implementation decisions while meeting North American Central Time collaboration requirements.

Build and maintain internal web services and UIs to support deployment workflows, strengthen CI/CD and release safety, improve observability and auditability, and operate internal services including on-call support and production rollouts.

The role involves building user-facing features, collaborating with product and design teams, and ensuring high-quality product delivery while optimizing performance across systems.

The Software Engineer will scale and optimize the platform's infrastructure, manage data layers, and enhance system operations to support growing LLM requests.

As a Software Engineer at OnePay, you will develop and implement features, build scalable products, and work closely with teams to enhance customer experiences.

The Software Developer designs, builds, and maintains custom software solutions, collaborating closely with product owners and development teams to deliver high-quality software while participating in Agile Scrum ceremonies.

As a Software Engineer, you will develop and maintain features using AI-assisted tools, collaborate with teams, and enhance software solutions for better user insights.

Develop, integrate, and test spacecraft flight software across the full lifecycle. Implement and upgrade cFS-based applications, perform unit-to-platform verification in simulation and HIL/FlatSat environments, support integration with hardware and payloads, and participate in anomaly resolution, mission operations support, and proposal activities.

The Senior iOS Engineer will lead product decisions, ship code for the iOS app, and enhance the app's architecture, ensuring a user-centric experience.

Build and operate CrewAI's infrastructure across AWS, Azure, and GCP. Own containerized deployments, CI/CD pipelines, observability, secrets, networking, databases, and on-call reliability. Harden security, automate deployments and installs, partner with runtime and product engineers, and reduce operational toil through tooling and automation.

Build and operate Sourcegraph Cloud platform: develop inter-cloud connectivity, control plane orchestration, expose infrastructure APIs, debug and patch upstream IaC dependencies, ensure reliability and participate in on-call rotation to meet SLAs.

Develop and optimize distributed systems for syncing customer data, focus on scalability, reliability, and performance for global clients.

Lead architecture, development, and long-term direction of Twilio's Android Voice and Video SDKs. Maintain WebRTC/SIP/C++ layers, improve CI/CD and build pipelines, ensure cross-platform convergence, raise code quality and test coverage, mentor engineers, triage customer issues, and own developer experience and SDK reference apps.