Top Software Engineer Jobs in Peoria, IL

Lead design and development of high-performance, offline-capable iOS (iPad) and Android apps for mission-critical drone operations. Build real-time maps, video streaming, telemetry overlays; integrate with hardware; optimize battery, memory, and latency; implement offline-first sync; collaborate with backend/hardware teams; mentor engineers and establish CI/CD, testing, and security best practices.

Design, build, and operate low-latency authentication and authorization services (OAuth, sessions, tokens, 2FA, account recovery). Lead technical designs, ensure strong security and observability, collaborate cross-functionally, simplify integrations, and mentor engineers while running production services with measurable SLOs.

Lead forward-deployed engineering engagements for strategic enterprise customers, diagnosing and resolving complex Windows deployment, management, update, application, performance, reliability, and security issues. Build automation, scripts, diagnostic tools, prototypes, and technical solutions; collaborate with Windows and Intune engineering teams on product fixes; and convert customer solutions into reusable playbooks and tools. Communicate findings to technical and executive stakeholders while delivering measurable improvements to Windows install-base health.

Lead design and implementation of Azure full‑stack, scalable skilling platform features. Drive CI/CD, reliability, automation, and AI/LLM-enabled capabilities. Mentor engineers, enforce engineering best practices, coordinate cross-team dependencies, and improve test automation and observability for enterprise-scale services.

Build and scale Xbox growth experiences across console, web, and mobile through full-stack engineering and data-driven experimentation. Responsibilities include proposing product hypotheses, designing A/B tests, implementing telemetry and analytics, shipping reliable services and client features, analyzing results, participating in on-call rotation, using AI-enhanced workflows, mentoring engineers, and driving experiments that improve retention and daily active users.

Lead hands-on full-stack development for Ruby on Rails, TypeScript, and React applications. Shape technical direction, design reliable APIs and data flows, optimize relational database performance, and deliver responsive front-end experiences. Lead projects end to end, mentor engineers, review and refactor code, collaborate cross-functionally, and explore AI-assisted engineering and LLM automation while protecting sensitive healthcare data.

Design and build backend features and architecture for Coder’s enterprise platform. Improve scalability, database migrations, upgrade reliability, concurrency handling, and operational performance in regulated and air-gapped environments. Investigate production issues, document technical tradeoffs, participate in design reviews and code reviews, and support owned services through on-call rotations.

Leads the design, development, deployment, maintenance, and support of scalable web applications. Responsibilities include coding, debugging, code reviews, API-first development, performance optimization, testing, cloud-native deployments, database and caching strategy, production monitoring, incident response, mentoring engineers, and cross-functional collaboration with product, design, customers, and vendors.

Define technical direction for hyperscale Azure Storage components; architect, develop, test, and support highly scalable, secure, compliant, and highly available cloud services. Lead multiple engineering projects, improve reliability, scalability, performance, consistency, and observability, and apply AIOps for incident detection, root-cause analysis, and operational excellence.

Build and optimize Xbox growth experiments across services, clients, console, web, and mobile. Develop telemetry and analytics systems, analyze experimentation results, and drive retention and daily active users. Ship secure, reliable full-stack features, participate in on-call rotation, collaborate across teams, and use AI-enhanced workflows to accelerate engineering. Mentor engineers, shape product hypotheses, and own ideas from prototyping through rollout and scaling.

The Staff+ Software Engineer will shape the technical direction, mentor junior engineers, and lead complex software system development while collaborating effectively with cross-functional teams.

Build and architect insurance and data infrastructure for eligibility, verification, and claims. Lead partner implementations to get employers, health plans, and channels live. Make technical decisions at the 0-to-1 stage, write clear documentation, maintain production systems, and use AI tools to scale impact on a fully remote team.

Design and scale platform infrastructure, backend services, developer tooling, CI/CD pipelines, and secure cloud-native systems. Improve developer experience, reliability, observability, and incident response while establishing security and compliance controls. Partner with engineering and product leaders to shape architecture and platform strategy, mentor engineers, and support customer-facing logistics projects. The role uses Python, AWS, Terraform, containers, orchestration, event-driven architectures, and relational databases.

Build and modernize backend services supporting patient scheduling, order management, and patient access workflows. Improve scalability, reliability, and maintainability across legacy healthcare applications, microservices, containerized infrastructure, and Kubernetes platforms. Collaborate with engineering, platform, product, and support teams while using CI/CD, automation, automated testing, and AI-assisted development practices to address complex technical challenges.

Lead design and implementation of Headway's insurance systems (eligibility, pricing, matching, claims). Build data-intensive, ML-powered platforms and automation, mentor engineers, write high-impact code, and improve accuracy and reliability across state and payer complexity to scale insurance-covered therapy.

Build, own, and operate cloud-native .NET services powering real-time trading, market data, and brokerage integrations. Ship features end-to-end, write tests, participate in on-call rotations, improve observability, and occasionally contribute to React/TypeScript frontend work.

Designs and develops scalable customer-facing web applications and microservices APIs. Leads complex system architecture, performs code reviews, mentors engineers, defines technical implementations, and guides engineering vision. Maintains sustainable business systems, supports compliance initiatives, and improves development processes. The role requires Java and Spring experience, cloud technologies, relational databases, REST and event-driven architectures, containerization, front-end development, and software lifecycle expertise.

Lead architecture and engineering for Azure core platform: define technology requirements, resolve cross-team issues, drive systemic reliability/performance improvements, mentor engineers, support on-call operations, and apply AI/ML to cloud operations.

Develop and evolve Azure capacity infrastructure, platform capabilities, and service stacks at scale. Provide technical leadership in requirements, architecture, design, coding, release planning, and operational reliability. Mentor engineers, manage cross-product dependencies, serve as a designated responsible individual, participate in on-call support, and improve system availability, observability, performance, and efficiency.

Lead quality engineering for a backend-heavy Immigration AI platform. Design test plans and cases, establish test environments, execute manual and automated testing, build custom frameworks and tooling, and test REST, asynchronous, event-driven, and backend services. Mentor engineers, conduct code reviews, identify automation opportunities, apply GenAI and LLMs, perform load and stress testing, and improve testing pipeline scalability, performance, and efficiency.

Leads the design, development, testing, debugging, and implementation of scalable software applications. Collaborates with product, design, and engineering stakeholders, conducts code reviews, mentors engineers, resolves performance issues, and improves development processes. The role requires proficiency in multiple programming languages, software testing, AI-assisted code generation, and preferably healthcare compliance, full-stack technologies, GraphQL, REST APIs, NoSQL, AWS, and infrastructure as code.

Leads Node.js sub-team architecture, technical standards, and complex full-stack development across frontend, mobile, and backend platforms. Builds React, TypeScript, Next.js, React Native, and Node.js features; designs APIs, authentication, caching, and data models; mentors engineers; and owns performance, testing, CI/CD, security, scalability, and HIPAA-compliant delivery.

Staff Software Engineer responsible for technical strategy, architecture, complex feature design, implementation, scalability, and greenfield development. The role mentors engineers, leads design and code reviews, drives technical alignment, addresses technical debt, participates in hiring, and remains a hands-on contributor to full-stack enterprise software development using technologies such as PHP, Laravel, Vue.js, and MySQL.

Join ROOST's Coop project to design, implement, test, document, and release trust-and-safety features. Work across backend APIs, GraphQL, databases, and UI to improve reviewer workflows, detection integrations, and reporting. Lead code quality, security practices, community contribution reviews, and stakeholder coordination while engaging with users and the open source community.

Join the ROOST Osprey team to design, implement, test, and maintain a high-performance, real-time safety rules engine. Work includes building data/event pipelines, scaling and containerizing services, integrating with Kafka and gRPC, reviewing community contributions, maintaining code quality and security, and engaging with users and open source contributors to prioritize and deliver features.