Top Senior Software Engineer Jobs in Milwaukee, WI

Build and operate production backend services supporting Supabase AI products, including the MCP server. Responsibilities include service architecture, deployments, scaling, authentication and authorization, observability, reliability targets, on-call incident response, rate limiting, capacity management, and API evolution. The role requires strong TypeScript or Go skills, production backend experience, distributed-systems debugging, and collaboration with Platform and SRE teams in a fully remote environment.

Design and build reusable backend platform services, libraries, frameworks, integrations, and AWS infrastructure abstractions. Establish reliability, security, observability, testing, compatibility, and deployment standards for consuming teams. Direct AI-agent implementation through specifications and contracts, review generated and human code, manage incidents, and drive production adoption of shared platform capabilities.

Lead technical ownership of InfiniBand and GPU interconnect fabric operations for hyperscale AI supercomputers. Drive incident response, deep multi-layer debugging across hardware/firmware/drivers/OS, and define failure models, playbooks, telemetry, and automation to improve reliability, observability, and scalability of GPU clusters and platform SLAs.

Develop and configure IBM TRIRIGA solutions for facilities and real property management. Translate stakeholder requirements into functional designs, workflows, test cases, and implementation plans. Collaborate with business sponsors, end users, maintenance technicians, and technical teams on solution design, troubleshooting, effort estimation, testing, documentation, and delivery. Work independently in cloud environments while supporting federal and commercial clients remotely.

Develop and optimize Microsoft .NET applications, legacy systems, and microservices with a focus on performance, scalability, reliability, and observability. Responsibilities include code reviews, performance testing, CI/CD integration, architecture and sprint delivery, legacy code and SQL tuning, cloud application deployment on Azure, automated testing, and resolving customer issues. The developer collaborates with architects, QA, technical support, and cross-functional teams using SAFe Agile practices.

Senior backend engineer responsible for designing, building, testing, and documenting scalable Node.js/TypeScript services and APIs. Lead projects end-to-end, enforce coding standards, write technical specifications, optimize performance, and mentor junior engineers. Champion Agile and CI/CD practices while providing technical thought leadership on backend architecture and data modeling.

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.

Build and operate Dragos’s web application, GraphQL and gRPC APIs, and client SDKs. Develop React and TypeScript features, design versioned API contracts, maintain Python, TypeScript, and Go SDKs, and collaborate with Product, Design, and backend engineering. Improve performance, accessibility, observability, security, testing, and code quality while supporting security data at scale.

Lead development of Toast’s consumer-facing web experiences, building scalable guest and restaurant features across the stack. Collaborate with frontend, backend, iOS, and Android engineers using React, TypeScript, Next.js, APIs, and backend services. Own projects from development through launch, monitoring, and analysis while experimenting with users and influencing consumer product strategy.

Own end-to-end development of customer-facing web platform features, emphasizing React and TypeScript frontend development while contributing to Python backend services. Translate product concepts and designs into reusable, intuitive UI components, partner with Product and Design, engage directly with users, and use AI-powered tools to accelerate development while maintaining code quality and performance.

Develop and enhance Ferguson’s custom Trilogie ERP system across multiple functional areas. Responsibilities include designing business-process solutions, owning software projects through implementation, integrating APIs and web services, collaborating with analysts, product owners, QA teams, administrators, and vendors, writing unit tests, reviewing code, and optimizing performance in high-transaction environments. The role also supports Trilogie’s migration from Unix to Linux and requires extensive UniBasic or Pick-based development experience.

Design and implement C++ features for MongoDB’s replication infrastructure, improving availability, recovery, consistency, performance, and fault tolerance. Diagnose distributed-systems issues, develop comprehensive tests, collaborate across engineering teams, participate in design and code reviews, and mentor junior engineers. The role involves owning technical work from investigation through delivery and contributing to major MongoDB releases.

Lead the design, development, and operation of integrations and API products. Establish standards for API contracts, authentication, authorization, versioning, reliability, observability, documentation, and developer experience. Drive cross-team system architecture, production readiness, scalability, security, and resilience while mentoring engineers and aligning technical decisions with product and business goals.

Build and enforce workload safety standards across Affirm’s Amazon EKS fleet. Responsibilities include Kubernetes resource management, workload isolation, disruption handling, cluster capacity analysis, policy automation, production debugging, incident response, fleet-wide rollouts, technical leadership, mentoring, and measuring infrastructure impacts on availability, latency, risk, and cost.

Lead frontend feature releases and own user experience, performance, testing, and production health for a React and TypeScript dental practice management platform. Collaborate with backend engineers using Java Spring Boot, develop AI-powered interfaces, integrate AI tools such as Claude, participate in code reviews, improve team efficiency, and estimate development work for timely delivery.

Build, ship, and maintain scalable iOS features used by millions of users. Responsibilities include writing Swift code with modern iOS frameworks, designing reusable components, managing asynchronous workflows, improving performance and reliability, debugging production issues, contributing to architecture and testing strategies, participating in code reviews, and collaborating with product, design, and engineering teams through release and iteration.

Designs, develops, configures, tests, documents, and supports Guidewire ClaimCenter and related applications, integrations, tools, and systems. Responsibilities include production support, incident and problem management, troubleshooting, root cause analysis, release management, technical design, automated functional and performance testing, code reviews, mentoring junior developers, vendor liaison work, and collaboration with architecture teams. The role requires independent judgment, leadership, SDLC expertise, and strong Java, .NET, JavaScript, SQL, Oracle, and testing capabilities.

Leads the design, configuration, development, integration, testing, deployment, and production support of Guidewire InsuranceSuite applications for Property and Casualty insurance. Translates business requirements into secure, scalable solutions; directs technical design and code reviews; supports integrations, incident resolution, root cause analysis, releases, and continuous improvement. Mentors engineers, maintains technical documentation, and promotes Agile, DevOps, quality, security, and enterprise architecture standards.

Own and develop a TypeScript monorepo spanning Next.js, Expo, and Cloudflare Worker applications. Build secure PostgreSQL and Prisma systems, webhook handlers, background jobs, authentication, encrypted financial data workflows, and AI-powered financial features. Responsibilities include production ownership, incident response, code review, and ensuring reliability, security, idempotency, and data isolation across web and mobile products.

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.

Build, test, deploy, and maintain scalable, secure SaaS applications in a collaborative Scrum team. Translate user stories into clean, documented solutions, solve complex business challenges, improve code quality and development practices, mentor teammates, and support production systems through occasional on-call rotations and release deployments. The role requires expertise in C#, ASP.NET, .NET, SQL Server, Azure, Kubernetes, microservices, and high-volume transactional web applications.

Leads development of resilient, scalable features across Toast’s enterprise Sports and Entertainment platform, including backend, frontend, and POS systems. Responsibilities include designing, deploying, testing, monitoring, and maintaining production services; leading complex technical projects; collaborating with Product, Design, Customer Success, Sales, and other teams; mentoring engineers; and using AI tools to improve development productivity.

Own and deliver highly available, low-latency backend identity systems supporting consumer onboarding, authentication, and verification. Lead quarterly team goals, guide engineers through ambiguous problems, collaborate with product and design partners, monitor system reliability, improve engineering standards, support on-call operations, and mentor team members. The role requires designing and launching distributed systems at scale using Python or Kotlin, AWS, MySQL, and Kubernetes.

The Senior Fullstack Software Engineer will design, implement, and maintain features for Conveyor's SaaS platform, involving both backend and frontend work, while collaborating closely with team members and mentoring juniors.

Design, build, and maintain AI-powered B2B SaaS products across frontend, backend, and AI. Own projects end-to-end, collaborate with product and design, ensure maintainability, mentor teammates, and inform roadmap and implementation decisions.