Top Software Engineer Jobs in Peoria, IL

Design, develop, and maintain Java-based backend services and APIs for KeeperApp. Own backend components, optimize MySQL schemas/queries, ensure performance and reliability, apply secure coding practices, participate in code reviews, and collaborate with product and engineering teams to deliver features iteratively.

Design, build, and maintain scalable React/TypeScript web applications for Keeper's Admin Console. Integrate with backend REST APIs, implement enterprise UI workflows (RBAC, policy config, audit views), ensure secure, well-tested frontend code, participate in architecture and code reviews, troubleshoot performance and usability, and maintain documentation.

As a Software Engineer at Canonical, you will design, build, and ship software, improve packaging and distribution processes, and mentor colleagues while contributing to open source projects.

The Junior Ubuntu Software Engineer will design, build, and ship software, focusing on quality and resilience, while engaging with the open source community.

The role involves building and managing scalable distributed systems for Twilio's email platform, mentoring junior members, and improving system performance and security.

As a Fullstack Software Engineer, you'll design, build and own the onboarding experience for Twilio's Stytch identity product, creating secure integration solutions for developers and enhancing customer authentication.

As a Software Engineer, you will develop and maintain Python and C# API services, mentor junior developers, and collaborate in Agile teams to deliver software solutions in healthcare communication.

Design and build platforms for new products, develop generative AI features, ensure system reliability, and foster a collaborative culture in a startup environment.

As a Senior Software Engineer, you will design best practices for AI Agents, develop standards, collaborate on product opportunities, and stay updated on emerging Agent techniques.

The Senior Software Engineer II will design automated reliability systems, improve tooling for incident management, and enhance observability infrastructure, contributing to operational excellence across engineering teams.

As a Fullstack Senior Software Engineer, you'll design and scale systems, lead technical projects, and enhance mental health care access through software at Rula.

The Senior Software Engineer will develop scalable web applications, lead technical projects, design complex systems, and enhance engineering culture through mentoring and collaboration.

As a Senior Software Engineer, you'll build systems for route planning, dispatch, and real-time tracking for various logistics and operations, improving dispatcher tools and user experiences.

As a Full Stack Software Engineer, you will lead product features from design to implementation while mentoring other engineers in AI-native workflows. Responsibilities include building scalable backend systems, creating responsive UIs, and driving architectural decisions in a high-urgency environment.

We are seeking 2025 and 2026 Graduate Software Engineers to join Canonical's teams focused on open source software. Responsibilities include product roadmapping, coding in various languages, engaging with the community, and ensuring high-quality performance. Candidates should have an exceptional academic track record and experience with Linux.

The role involves designing, building, and optimizing a data platform, collaborating with cross-functional teams, and ensuring data quality and security.

Provide SharePoint site/content support and .NET software development for custom applications (C#, ASP.NET). Support SharePoint design, develop custom web parts/workflows, maintain SQL Server-backed services, use ticket systems (ServiceNow/JIRA), and interface with customers. Work remotely and must obtain a Government Public Trust clearance; US citizenship required.

Develop, configure, integrate, and operationalize command-and-control (C2) and Common Operating Picture (COP) applications. Build workflow automation, event management, alerting, data fusion, dashboards, and operator-focused UX. Support testing, interoperability validation, demonstrations, and operational readiness while collaborating with systems engineering and stakeholders.

Design, build, and maintain data migration and conversion tools; develop test scripts and deployment timelines; perform system integration and validation with customers; troubleshoot integrations; collaborate with project teams and customers to deliver data migration solutions meeting contract deliverables.

Design, develop, and maintain scalable web and desktop applications (Electron) and Go microservices for torque monitoring, logging, and QA. Integrate industrial protocols (Modbus TCP, Siemens S7, MQTT), implement REST/WebSocket APIs, deploy containerized Linux services with Docker, and collaborate with cross-functional engineering teams.

Build and maintain integrations with cloud providers and third-party security tools; design data pipelines to normalize and validate diverse API inputs; implement authentication flows (OAuth2/OIDC/API keys); ensure reliability with error handling, retries, observability; document integrations and collaborate with engineering to deliver consistent data for downstream features.

Join cross-functional XP teams to deploy and adapt the Imogen platform into client public cloud environments. Pair-program, collaborate with client infosec and infrastructure teams, lead technical discovery, apply XP practices (TDD, CI/CD, pair programming), onboard and mentor engineers, build deployment tooling, participate in on-call rotations, and travel periodically for client engagements.

Build and enhance full‑stack cloud-native applications using Java/Spring and JavaScript/React. Own the full SDLC, apply TDD and CI/CD, troubleshoot production issues, mentor junior engineers, and drive technical direction as experience increases from contributor to Lead.

Evaluate and solve real-world backend, full-stack, systems, and infrastructure engineering tasks. Review, debug, and improve code across environments; design and assess APIs, databases, services, testing, and deployment workflows; identify tradeoffs around scalability, reliability, performance, security, and developer experience; communicate technical reasoning clearly and collaborate with customer teams.

Design and implement Wi‑Fi 6 (802.11ax) and 802.11s mesh networking software for enterprise access points. Develop HMAC components, optimize throughput/latency/airtime, integrate on NXP-based Embedded Linux platforms, maintain hostapd/wpa_supplicant/mac80211, debug with packet captures, and collaborate with RF/firmware/QA teams for product releases.