Top Software Engineer Jobs in Milwaukee, WI

Lead large-scale initiatives for a high-performance Linux-based network sensor, improving ingestion, scalability, continuous capture, queue reliability, observability, and production diagnostics. Own root cause analysis and postmortems, establish engineering standards, translate business goals into technical plans, and mentor engineers through design and code reviews. The role requires deep Rust expertise, distributed systems experience, concurrent programming, packet capture, message brokers, and cybersecurity best practices.

Develops and owns UI and software features for GE HealthCare’s Mac-Lab/CardioLab medical recording systems. Responsibilities include C++ and C# Windows application development, UI architecture, signal visualization, performance-sensitive and multithreaded programming, technical design, roadmap contribution, and collaboration with global teams. The role requires adherence to regulated quality systems and medical device safety requirements while supporting new product development and existing installations.

Build and launch scalable fullstack web applications and APIs for Affirm’s Ads Platform. Collaborate with product, design, analytics, and engineering partners to break projects into deliverable phases, make technical trade-offs, write tested and extensible code, monitor service metrics, support on-call operations, review code, and participate in team development and interviews.

Develop backend tools and systems that improve batch development, testing, workflow efficiency, and reliability. Collaborate with product, infrastructure, design, and analytics teams; break projects into deliverable phases; build scalable, well-tested code; monitor metrics; support system availability and on-call operations; debug code; conduct reviews; and contribute to engineering growth and hiring activities.

Develop and architect scalable iOS applications serving millions of users. Collaborate with Product, Design, and Engineering to deliver features, promote clean architecture and iOS best practices, monitor performance and crash analytics, and guide technical excellence. Requires strong Swift, SwiftUI, MVVM, API integration, persistence, testing, and code quality expertise.

Design, build, deploy, and maintain resilient, scalable software for Toast Delivery Services. Develop real-time delivery tracking, driver matching, pricing, refunds, and payment-related systems. Solve distributed-systems and scaling challenges, integrate with partner APIs, uphold production reliability, promote strong engineering practices, and mentor teammates.

Own the architecture and technical direction for provider-sourced client products, including lead management, caseload migration, AI-powered inquiry workflows, and provider marketing tools. Partner cross-functionally with product, design, data, sales, customer experience, and pricing teams. Build reliable user-facing systems, guide technical decisions across teams, measure product impact through experimentation, and influence teams without direct authority.

Architect and operate Affirm’s large-scale Amazon EKS compute platform, including cluster lifecycle, node management, autoscaling, shared components, infrastructure automation, workload safety policies, observability, cost and capacity optimization, and self-service workflows. The role drives technical strategy, mentors engineers, partners cross-functionally, and participates in on-call incident response.

Build and ship a full-stack data collection and search platform for defense and intelligence users. Develop frontend, backend, data ingestion, storage, indexing, APIs, and agentic AI capabilities using TypeScript, React, Tailwind, Node.js, PostgreSQL, and AWS. Partner with mission owners, customers, designers, and engineers to translate intelligence workflows into intuitive, mission-ready products supporting information analysis and visualization.

Build and optimize automated release engineering systems, including CI/CD pipelines, build and deployment tooling, and AWS cloud infrastructure. Ensure software delivery quality, security, compliance, and reliability. Lead complex projects, participate in on-call support, mentor teammates, and promote technical excellence. The role uses Go, Java/Kotlin, TypeScript, GitHub Actions, PostgreSQL, DynamoDB, Backstage, AWS, and AI development tools.

Build and optimize growth systems that increase patient bookings and engagement. Design experiments across messaging, outreach, and in-product booking flows; develop backend systems for experimentation and activation; monitor funnel metrics; analyze drop-offs; prioritize growth opportunities; and collaborate with product, design, data, and operations teams. The role emphasizes rapid experimentation, product-led growth, and measurable improvements in activation, conversion, retention, and booking.

Design, develop, test, deploy, maintain, and improve secure software applications, services, interfaces, and automation components. Integrate systems with databases, APIs, identity services, and third-party products. Troubleshoot defects and production incidents, support testing and security reviews, document architecture and deployments, and contribute to release and change-control activities. Collaborate with users, analysts, engineers, project managers, and technical teams while providing status reports, estimates, recommendations, and occasional technical guidance.

Build and independently deliver complex software features using Ruby on Rails and React. Own technical solutions, clarify requirements, contribute to system design, and support deployments and production operations. Optimize performance, reliability, security, and scalability while maintaining databases, AWS infrastructure, web servers, monitoring, and CI/CD pipelines. Implement SSO integrations and compliance requirements, troubleshoot Linux environments, evaluate technologies, and mentor less experienced engineers.

Software Engineer Interns collaborate with software and test engineers to code, debug, document, develop automated tests, and implement software components. They translate user stories and requirements, support technical design and planning, and participate in testing and implementation within an Agile environment. The 10-week remote program provides practical experience to students pursuing technical degrees, with exposure to enterprise integration, APIs, event streaming, data integration, and generative AI tools.

Designs, develops, tests, and supports Salesforce and MuleSoft enterprise integrations using API-led architecture. Responsibilities include implementing user stories, resolving defects, monitoring system performance, maintaining APIs, participating in Agile planning, conducting technical reviews, and collaborating with engineers. The role requires expertise in MuleSoft Anypoint Platform, Salesforce development, API documentation, scalable integration patterns, CI/CD, automated testing, and Salesforce ecosystem integrations.

Develop and maintain payer customer implementations for a healthcare authorization platform, with approximately 80% backend and 20% frontend development. Responsibilities include Java application development, RESTful APIs, SQL queries and schema updates, debugging, unit testing, code reviews, CI/CD, AWS cloud usage, technical documentation, requirements analysis, and on-call support for critical healthcare applications.

Develops, configures, tests, documents, deploys, and supports business applications for clinical trial study configurations. Collaborates with project management, solution, delivery, and software engineering teams to interpret requirements, resolve defects, maintain databases, and deliver work within quality targets and SLAs. Performs site support, change control, source control, peer reviews, and production deployments while following SDLC practices, SOPs, GCP, 21 CFR Part 11, and other regulatory requirements.

Build and evolve OpenRouter’s public REST API, TypeScript and Python SDKs, Agent SDK, CLI, documentation, examples, and starter repositories. Own developer-facing product surfaces, improve API ergonomics and agent compatibility, and collaborate with DevRel, Product, and Platform teams to expand the developer ecosystem. The role requires strong API and SDK design judgment, autonomy, written communication, and experience shipping widely used developer products.

Design and implement backend APIs, microservices, and checkout platform components for Affirm’s financial products. Own system health, improve performance and reliability, collaborate across engineering teams, and contribute to technical standards, tooling, and processes. The role requires developing, testing, and shipping high-quality software at scale while making customer-centric technical decisions.

Develop and operate highly available, large-scale distributed systems for Twilio SendGrid. Build Go-based microservices, manage AWS and Azure infrastructure with Terraform, improve observability and reliability, and optimize high-throughput email services. Responsibilities include architecture, coding, testing, technical debt reduction, infrastructure modernization, sprint planning, code reviews, and mentoring junior engineers.

Design, build, and operate resilient AWS cloud infrastructure, Kubernetes platforms, CI/CD pipelines, and infrastructure-as-code modules in a regulated medical-device environment. Improve security, scalability, performance, cost efficiency, deployments, and operational support. Collaborate with Engineering, QA, IT, and Security teams while troubleshooting distributed systems and providing technical leadership across global teams.

Develops workflow applications, automation, scripts, services, integrations, and testing solutions that replace manual processes with traceable enterprise workflows. Responsibilities include process analysis, evidence collection automation, task routing, approvals, policy enforcement, API and data integrations, documentation, code reviews, demonstrations, defect correction, and continuous improvement. The role is remote, contingent on contract award, and supports a federal customer.

Develop, test, maintain, and support secure, scalable full-stack .NET applications in an Agile/Scrum environment. Responsibilities include API and database development, technical documentation, code and design reviews, SDLC compliance, security and audit adherence, collaboration with architects and business partners, mentoring junior engineers, leading project delivery, and participating in on-call support and occasional travel.

Lead the architecture and technical strategy for Affirm’s high-volume observability platform. Design telemetry pipelines and sampling strategies, improve reliability and cost efficiency, integrate observability into AI-assisted development, and drive platform adoption across engineering teams. Remain hands-on while mentoring six engineers, leading cross-functional initiatives, establishing engineering standards, and overseeing monitoring, alerting, on-call operations, and system availability.

Designs, builds, scales, and operates distributed CI/CD services supporting millions of builds, tests, and releases. Develops code for Azure-based infrastructure spanning virtual machines, containers, and custom lab environments. Responsibilities include requirements analysis, architecture and design documentation, estimation, debugging, optimization, operational playbooks, on-call incident response, monitoring, reliability improvements, and mentoring engineers.