Top Software Engineer Jobs in Peoria, IL

Lead design and implementation of batch and stream loading systems to ingest terabytes daily. Provide technical leadership on the Streamloader team, collaborate with architects, engineers, product, sales, and customers, and develop high-performance distributed software in C++ and/or Java while ensuring system reliability and customer success.

Lead technical direction for a Ruby on Rails-based platform, design cross-cutting systems (data models, APIs, clinical workflows), write full-stack code, mentor engineers, evaluate tradeoffs, collaborate with product/design/clinical teams, and champion high standards and domain expertise in pediatric behavioral health.

Design and implement backend APIs and performant database schemas (Postgres/SQL); build scalable, testable C# services; work in Agile cross-functional squads; incorporate AI-assisted development tools; and drive engineering maturity and efficiency.

Design, build, and optimize responsive, high-performance front-end interfaces for a Web3 DEX using modern JavaScript frameworks and TypeScript. Collaborate with designers, product, and back-end teams to integrate blockchain APIs and smart contracts, mentor junior developers, troubleshoot issues, and contribute to mobile-first/PWA development while ensuring scalability and maintainability.

Lead multiple engineering teams to define technical vision, drive architecture and delivery, scale talent, enforce engineering standards, and ensure high-transaction, cloud-native, secure platform operations while partnering with executives and cross-functional stakeholders.

Build and ship complex consumer-facing full stack applications. Work on React/TypeScript frontends (offline PWAs using IndexedDB/DexieJS and Workbox) and Scala/Play backends with PostgreSQL. Deploy on AWS via Kubernetes. Mentor engineers, collaborate in product-focused cycles, and thrive in a fast-moving startup environment.

Build and maintain the core backend product: design and implement features, take ownership of end-to-end outcomes, iterate and fix bugs without a QA team, collaborate with product on scoping, and contribute to company culture and hiring.

Lead engineering teams to deliver a scalable, cloud-based SaaS platform for clinical trials. Own roadmap execution, architecture guidance, and sprint/resource management. Drive implementation of predictive models and analytics, optimize Agile processes, manage Engineering Managers and Tech Leads, and communicate technical risks to stakeholders while fostering a high-performing team culture.

Lead and grow a Support Engineering team that resolves complex product issues, integrations, and data workflows. Define escalation and triage practices, build scalable diagnostics and internal tools, collaborate closely with Engineering and Product, mentor engineers on debugging, logs, and database querying, and create repeatable processes to improve customer outcomes and support efficiency.

Build and maintain full-stack features on a product-oriented team, owning product areas end-to-end. Ship customer-facing functionality, design and optimize data models and schemas, work with React state management, relational databases, cloud services, event streaming, caching, and AI tools. Collaborate cross-functionally, take high ownership, and occasionally support mission-critical work outside normal hours.