Top Senior Software Engineer Jobs in Milwaukee, WI

Lead technical strategy and architecture for Coinbase Payments, building high-availability, low-latency payment rails and funds-flow systems. Drive cross-team initiatives, enforce financial correctness (idempotency, reconciliation, auditability), improve reliability and cost efficiency using observability data, mentor senior engineers, and align stakeholders across product, risk, and compliance to deliver scalable global payment solutions.

The Senior Software Engineer will design and maintain data systems, create data integration SDKs, and implement data security measures while collaborating with product teams and managing data pipelines.

Design, build, and operate core developer-infrastructure services (CI/build, deployment orchestration, test infra) at scale. Own services end-to-end including SLOs, observability, and on-call; drive measurable improvements in build/deploy/test metrics; lead cross-team technical projects and mentor engineers to improve developer productivity.

The Software Engineer will enhance data collection for AI model training, manage cloud infrastructure, and collaborate on dataset roadmap at Speechify.

The Senior Software Engineer will lead technical strategies, build AI-driven software systems, mentor junior engineers, and ensure security best practices.

As a Lead Infrastructure Engineer, you'll enhance database reliability, automate infrastructure, collaborate on initiatives, and participate in on-call duties.

The Manager of Software Engineering will lead the Developer Environments team, enhancing developer productivity through effective environment provisioning and CI/CD workflows while mentoring engineers and implementing system reliability improvements.

The Senior Staff Software Engineer will lead major projects, drive architectural innovation, interface with customers for solutions, and mentor engineers. Experience in software engineering and a strong grasp of AI, cloud scale, and evolving technologies is essential.

Develop and manage high-performance back-end systems, design secure APIs, optimize performance in cloud environments, conduct testing, and manage ML model lifecycles.

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.

The Staff Software Engineer will enhance video capabilities, support live streaming and storage infrastructure, and collaborate on platform development. Responsibilities include coding, mentoring, and ensuring platform reliability for millions of users.

Design, build, and operate scalable, highly concurrent backend services in Go. Architect distributed, fault-tolerant systems, optimize performance and reliability, define APIs and service boundaries, improve observability and operational readiness, and collaborate cross-functionally to support mission-critical autonomous deployments.

As a Senior Fullstack Engineer, you'll contribute to backend development for Toast's New Ventures team, collaborating on architecture and launching MVPs while addressing unmet operator needs.

Design, build, deploy, and operate a high-concurrency, resilient configuration and publishing platform. Lead cross-team projects, set technical direction, improve engineering productivity, optimize performance, and maintain end-to-end ownership of distributed systems at scale.

Lead design and delivery of backend-focused full-stack features for the Business Platform. Build APIs, data models, and reliable parsers, ensure secure resilient systems, mentor engineers, drive estimates and quality, collaborate with Growth on data-driven features, and integrate AI tooling into development workflows.

Join Archy as a Senior Platform Software Engineer to enhance dental practice management through a scalable SaaS solution, focusing on cloud infrastructure, CI/CD pipelines, and AI integration.

The Senior iOS Engineer will drive key engineering decisions, enhance the iOS app, and engage in product strategy discussions. Responsibilities include shipping production code and maintaining app architecture.

Build and maintain end-to-end web applications powering sales and operations. Design tools for quoting, scheduling, and fulfillment, integrate AI into products, collaborate on UX, ship high-impact features, and contribute to architecture, deployment, and engineering culture.

Lead end-to-end full-stack development across React frontends and compiled backends, influence architecture and data modeling, integrate third-party dealership APIs, use AI-assisted coding tools daily, set engineering standards, ship production features to live dealership users, and mentor junior engineers.

Senior .NET Software Engineer responsible for end-to-end software development using Microsoft technologies. Requires extensive experience in SDLC, design principles, technical documentation, web application development with .NET, Agile/SCRUM, Entity Framework, database design, and version control. Familiarity with project tools JIRA, TEMPO, Bitbucket, and Confluence preferred.

The Senior Software Engineer for the Treasury team will develop backend services for fund management, ensuring system reliability and leading projects in a fast-paced environment.

Lead platform improvements and migrate legacy integrations to a standardized, observable integrations platform. Build reusable frameworks, improve data traceability, deliver visibility tools, strengthen contract safety and resilience, and partner cross-functionally to enable safe incremental rollouts and reliable vendor API integrations.

Modernize a legacy, mission-critical system by implementing backend domain services in TypeScript/Node.js, extracting business rules from legacy Java/PL/SQL, ensuring financial-grade correctness and auditability, delivering full-stack vertical slices (React to AWS CDK), using AI-agent development tools, and maintaining CI/CD with automated testing.

Lead modernization of a legacy Oracle system to PostgreSQL: design migration pipelines, implement automated reconciliation and CDC workflows, interpret PL/SQL business logic, build full-stack features (React UIs, Node APIs), ensure financial-grade data integrity, and vet agent-generated code for federal compliance.

The Staff Software Engineer will design and implement solutions for the Websites product, collaborate across teams, and innovate on a scalable web platform for restaurants.