Top Software Engineer Jobs in Peoria, IL

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.

Lead design and implementation of scalable backend services and member-facing APIs using Python/Django, PostgreSQL, BigQuery/dbt and GCP. Own infrastructure as code (Terraform), container orchestration (Docker, Kubernetes), async/event-driven systems, observability, and performance tuning. Mentor engineers, collaborate with Product and Data teams, and ensure secure, low-latency, AI-driven member experiences.

Design, develop, and optimize SuiteCommerce solutions and SCA extensions for financial services. Build SSP applications and backend logic with SuiteScript, JavaScript, HTML/CSS, Backbone.js. Integrate third-party systems via REST/SOAP, maintain payment gateway and compliance integrations, and collaborate with teams to enhance eCommerce and client portal capabilities while tracking NetSuite updates.

Design, develop, test, and support full-stack healthcare applications across the application stack. Modify and maintain existing software, enforce development best practices, participate in QA and SDLC processes, and collaborate with product, architecture, and support teams to deliver reliable solutions.

Lead the development of healthcare applications and data systems, focusing on audience intelligence and compliance. Design scalable data pipelines, APIs, and reporting systems while ensuring high data quality and security in regulated environments.

Design and develop backend services and APIs for identity resolution, optimize event-driven systems, and enhance system reliability. Mentor engineers and influence architectural decisions.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

As a Staff Software Engineer Tech Lead, you will lead technical efforts for the POS app, mentor engineers, solve strategic challenges, and enhance development with AI tools.

As a Staff Software Engineer, you'll design and operate traffic infrastructure, lead multi-team projects, ensure service reliability, and mentor engineers while utilizing AI tools for development efficiency.

As a Senior Software Engineer, you'll support projects from conception to completion, build and extend React applications, and contribute to Vetcove's platform development.

Design and build scalable systems for Upstart Bank, translating regulatory requirements into software, improving reliability, and ensuring audit-readiness while collaborating with multiple teams.

The Senior Software Engineer will design and build scalable backend services for loan origination, improving reliability and operational efficiency. Responsibilities include modernizing infrastructure, supporting partner onboarding, and collaborating across teams to enhance lending processes.

The Staff Software Engineer will lead technical projects for the Patient Matching team, focusing on scalable systems and API design. Responsibilities include system architecture, mentoring engineers, and collaborating with various stakeholders to enhance patient experiences in mental healthcare.

Lead design and evolution of data interfaces, mentor team, support integrations for live clients, and enhance data tools for scalability and efficiency.

As a Software Engineer, you'll develop and deploy software for cyber defense, handle digital twin model construction, and perform site reliability operations.

Join Trace as a Software Engineer, focusing on building end-to-end systems for data capture and processing in physical AI. Responsibilities include backend services, data pipelines, and customer collaboration.

Build intuitive interfaces for construction workflows using React and TypeScript, optimizing performance and creating data-rich dashboards.

Develop full-stack features for both parent-facing and physician platforms using Django and Hotwire. Collaborate with product managers and improve health outcomes for children. Take ownership of projects and implement high-quality software.

The Full Stack Software Engineer will design, maintain scalable solutions, and collaborate with teams to enhance software quality, focusing on Ruby on Rails and AI integration.

The Full Stack Software Engineer will design and maintain scalable applications, focusing on Ruby on Rails, and collaborate with teams to enhance software quality and performance. Key responsibilities include troubleshooting, optimizing systems, and integrating AI solutions.