Top Senior Software Engineer Jobs in Milwaukee, WI

Lead the rearchitecture and development of a cloud-native Banking as a Service platform. Design scalable APIs, microservices, event-driven systems, and partner integrations using modern cloud, DevOps, observability, and security practices. Drive architectural strategy, technical debt reduction, incident response, code quality, compliance, and continuous delivery. Mentor engineers, collaborate with product and architecture teams, evaluate emerging technologies, and own capabilities through project delivery.

Develop and maintain runtime products by researching legacy codebases, backporting CVE security patches, building packages across Linux distributions and architectures, and creating automated testing and AI-assisted security workflows. The role requires deep C/C++ systems expertise, build-toolchain archaeology, cross-compilation experience, and strong ownership of correctness. It also includes customer support for compatibility and upgrade issues.

Develop and maintain Pioneer Desktop, an Electron application connecting sewer inspection trucks with cameras, sensors, and cloud services. Responsibilities include hardware integrations, reliable video recording, offline data storage, cloud synchronization, crash diagnostics, software updates, testing, and release management. The role also involves debugging Windows systems, resolving field issues, collaborating with product and design teams, visiting customers and hardware vendors, and improving operator workflows.

Provides technical leadership across multiple agile teams, designing, developing, and maintaining complex distributed software systems. Responsibilities include writing and reviewing code, translating requirements into scalable designs, leading design reviews and sprint delivery, mentoring engineers, collaborating with product managers, and driving technical strategy, quality, security, performance, observability, and operational excellence.

Leads and grows an engineering team responsible for customer-facing web, mobile, and backend products. Owns delivery, technical direction, architecture, reliability, hiring, coaching, and career development. Partners with Product and Design to prioritize work and deliver dependable releases. Establishes AI-assisted engineering practices, supports AI-powered customer experiences, and builds systems for scheduling, payments, client management, notifications, and integrations.

The Senior SDET develops and maintains regression automation, performs manual and automated testing across smoke, integration, performance, and regression scenarios, and documents defects and test results. The role collaborates with product and customer-facing teams throughout the SDLC, contributes to planning and quality processes, maintains GitHub automation repositories, identifies quality risks, and participates in on-call support.

Build core banking activation experiences for administrators and customers by developing streamlined user flows, robust APIs, and third-party integrations. Design and implement scalable microservices using domain-driven design, emphasizing clean, tested, documented code, error handling, logging, and performance. Contribute to system architecture, advocate for technical decisions, review code, and provide technical guidance to teammates in an Agile Scrum environment.

Build core digital banking experiences for bank administrators and customers. Develop streamlined user flows, robust APIs, and third-party integrations such as Plaid and SendGrid. Write clean, documented, tested code with strong error handling, logging, and performance considerations. Apply system design, domain-driven design, and microservice architecture while working in an Agile Scrum environment. Provide architectural guidance, technical recommendations, and code reviews to improve team output.

Lead development of scalable backend services and platform infrastructure for an AI agent platform. Responsibilities include architecture and code reviews, infrastructure automation, CI/CD, observability, reliability, distributed systems, ML/NLP workload support, and mentoring engineers. The role requires expertise in Java, Python, cloud environments, Docker, Kubernetes, infrastructure-as-code, monitoring tools, and data infrastructure.

Own and evolve Swyfft’s partner-facing insurance API, including resource design, versioning, backward compatibility, authentication, rate limiting, error handling, metrics, documentation, and contract testing. Build production C# code, maintain the translation layer between public APIs and internal systems, support partner integrations, and collaborate with QA and product. The role requires substantial public API experience, strong API security and multi-tenancy knowledge, and fluency in C#, ASP.NET Core, SQL Server, and Azure.

Build customer-facing AI products for fitness and wellness businesses, develop agentic workflows, modernize architecture, and improve infrastructure, CI, observability, and production reliability. Own features end to end, work across the TypeScript and JavaScript stack, ship iterative product improvements, and mentor teammates through code review and pairing. The role requires strong product judgment, autonomy, full-stack capability, and hands-on experience with AI tooling and production systems.

Lead the design and development of Azure Compute Fleet capabilities that orchestrate Virtual Machine Scale Sets across regions. Build distributed control-plane services, APIs, and workflows for capacity placement, scaling, failover, and lifecycle management. Collaborate across Azure engineering teams, drive AI-enabled engineering improvements, participate in on-call operations, and improve reliability, observability, performance, and recovery for hyperscale cloud services.

Administer and engineer enterprise observability platforms spanning infrastructure, applications, cloud resources, and telemetry. Lead technical onboarding, monitoring design, alerting, dashboards, automation, integrations, troubleshooting, capacity planning, licensing optimization, upgrades, and migrations. Establish standards and documentation, collaborate with vendors and procurement, and mentor engineers. The role requires strong systems thinking, cloud and production support experience, scripting or infrastructure-as-code expertise, and the ability to resolve complex reliability and performance issues.

Co-own the architecture and long-term health of a Laravel platform, including its database, APIs, background jobs, integrations, CI/CD, observability, and security. Lead scaling initiatives, modernization decisions, reliability improvements, and agent-ready engineering practices. Set technical direction, review designs and code, mentor engineers, collaborate with product teams, and help prepare systems for growth and SOC 2 compliance.

Lead architecture and development of significant backend platform features from concept through release. Design scalable distributed systems, write technical proposals, assess business impacts, and ensure dependable performance. Use AI coding assistants while validating code quality and safety, coach engineers, shape the technical roadmap, and collaborate with product and cross-functional teams. The role requires expert Node.js and TypeScript skills, experience with message queues, and ownership of substantial product areas.

Develop and maintain enterprise Java applications using Spring and full-stack technologies. Responsibilities include coding, testing, deployment, code reviews, performance optimization, architectural design participation, project planning, mentoring developers, and cross-functional collaboration. The role requires strong experience with REST services, microservices, databases, version control, CI/CD, caching, service discovery, and Agile development.

Design, develop, and modernize large-scale web applications for Uline.com. Influence architecture, contribute to planning and code reviews, improve application performance, mentor developers, and collaborate across teams. Apply emerging AI technologies, including Azure AI, vector search, Claude Code, and GitHub Copilot, to support platform modernization and deliver reliable enterprise-scale solutions.

Build and operate scalable data pipelines, backend services, APIs, and infrastructure powering AI-driven healthcare applications. Design distributed data systems, ETL workflows, streaming platforms, and cloud-native architectures while partnering with AI, machine learning, and product teams. Own production reliability, observability, security, automation, and on-call support for business-critical systems.

Design, build, and scale secure full-stack healthcare systems using TypeScript, React, Node.js, PostgreSQL, and AWS. Develop APIs, event-driven services, integrations with health systems, clinical data pipelines, and LLM-powered features. Own functionality from design through rollout, write tests and architecture documentation, review code, collaborate with product and clinical teams, troubleshoot production issues, and participate in on-call support.

Design, develop, test, and maintain scalable platform software and services. Collaborate with architecture and cross-functional teams, implement platform features, participate in code reviews, document technical specifications, troubleshoot issues, and optimize performance and scalability. The role requires Go development, scripting, Kubernetes, cloud-native technologies, containerization, cloud networking, and CI/CD experience.

Develops, enhances, tests, debugs, deploys, and supports enterprise mainframe applications using COBOL, IDMS, DB2, and related technologies. Troubleshoots production issues, collaborates with end users to define requirements, ensures performance and security, applies Agile practices, and mentors junior developers. The role supports remote personnel serving a Kansas City, Kansas customer and requires the ability to obtain and maintain Public Trust clearance.

Build and maintain secure, scalable backend systems for Mindbody products. Design microservices, write tested and maintainable code, monitor applications, participate in reviews, and collaborate with Product, Design, QA, and Engineering teams. The description also includes leadership responsibilities such as managing backend development teams, coaching managers and engineers, establishing delivery processes, and driving technical and organizational improvement.

Build and maintain Python services, REST APIs, batch jobs, shared libraries, claims workflows, and internal applications. Develop maintainable, unit-tested code; write SQL for MySQL databases; participate in design, code review, deployment, and production support; and collaborate across departments. The role also involves handling sensitive healthcare data, using AI-assisted development tools responsibly, and working in a regulated pharmacy benefits domain.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Leads technical strategy and architecture for a scalable advertising platform supporting video, server-side advertising, connected TV, programmatic advertising, and new ad formats. Designs distributed systems, evaluates ad technologies, improves reliability and observability, partners across engineering and product teams, mentors engineers, and guides long-term technical investments and roadmaps.