Top Software Engineer Jobs in Peoria, IL

Design, build, and maintain high-availability, cloud-native services and REST APIs; develop scalable, data-intensive full-stack applications; debug production issues; improve performance; participate in code reviews, testing, and architectural decisions.

Lead design and implementation of highly scalable, secure backend services and APIs. Define architecture for databases and microservices, own projects end-to-end, resolve reliability/performance issues, improve CI/CD and observability, mentor engineers, and align technical strategy with product and security requirements.

The Senior Software Engineer (Full Stack) designs, builds, and implements full-stack software solutions while mentoring other engineers and collaborating with cross-functional teams to deliver business value.

Lead architecture and build scalable, secure production services while championing AI-native development. Mentor engineers, influence technical direction, review PRs, and help evolve a legacy monolith to a modern stack in partnership with product and exec leadership.

Lead design, develop, test, and deploy large-scale software systems. Collaborate with product, design, and engineering teams; write scalable TypeScript/Node.js code; resolve defects and performance issues; perform code reviews; mentor engineers; improve CI/CD and IaC processes; and stay current on technologies.

Support P-8A mission and combat systems engineering: perform CONOPS analysis, requirements decomposition, roadmaps, ECP/TD implementation, troubleshooting, Agile support, create technical documentation, use cases, and software development plans to meet fleet expectations.

Design, implement, test, and maintain full‑stack features and services for the Cayuse Research Platform. Drive architecture, prototypes, and technical debt reduction while practicing TDD, expanding automated QA, collaborating cross‑functionally, and ensuring high quality delivery in an Agile environment.

Lead scaling and performance of backend job processing and code execution systems. Write and review well-tested code, own features to production, improve throughput and multitenant fairness, mentor engineers, and influence technical direction across the stack.

Lead complex enterprise deployments of JetBrains Central, architect integrations with CI/CD and developer platforms, establish AI governance and observability, mentor FDEs, and shape product direction through customer feedback. Travel up to 20% and act as trusted technical advisor to customers and partners.

As a Senior Software Engineer, you'll build high-performing, scalable applications for Joyride's auction platform, working on new features and existing code.

Lead technical strategy and architecture for Attentive's AI-assisted developer platform and productivity systems. Build and scale CI/CD, local dev environments, CLI tooling, service scaffolding, and orchestration layers across a large Java/Spring Boot Gradle monorepo on AWS. Drive cross-team adoption, author RFCs/ADRs, mentor engineers, and improve developer productivity, reliability, and scalability of internal tooling and AI-assisted workflows.

Build and ship full-stack features in weekly loops, owning problems end-to-end from stakeholder discovery to production, using TypeScript/Node backend and React/React Native frontends, leveraging AI-paired tools, and making scalable architectural decisions while collaborating with cross-functional teams.

The Senior Software Engineer role involves modernizing healthcare payment systems using C#, .NET, SQL, and cloud technologies while leveraging AI tools for efficiency.

The Embedded Software Engineer will analyze and develop embedded software systems, provide customer support, and apply software engineering and cybersecurity methods.

Lead end-to-end platform engineering projects to build and operate a multi-tenant data lakehouse and scalable compute infrastructure, partner with cross-functional teams, improve reliability/observability, support platform users, and drive platform usability and ML/analytics enablement.

Design and develop scalable software solutions, lead engineering workstreams, ensure code quality, mentor junior developers, and collaborate on technical strategies to enhance digital experiences for BECU members.

The Senior Software Engineer will design and maintain internal systems and automations for sales and marketing, focusing on integrations with CRMs and data management.

Design and develop web applications, mentor teammates, shape architectural decisions, write clean code, conduct testing, and troubleshoot issues.

As a Software Development Engineer in Test II, you'll develop automated tests for routing and switching hardware, improving test efficiency while collaborating with engineering teams.

As a Senior Software Engineer (Backend), you will develop features, test and debug APIs, create technical documentation, and contribute to infrastructure solutions.

As a Senior Software Engineer, you will develop efficient systems to enhance healthcare delivery and collaborate with various teams to innovate features for patient care tools.

This role involves operationalizing data pipelines, deploying ML tasks, and providing architectural support in AWS environments for federal government projects.

The role involves architecting solutions for federal clients, supporting AI data pipelines, and providing technical advisory on identity management systems, with a focus on AWS cloud technologies.

As a Senior Software Engineer, you'll develop and enhance a user-centric Android app, focusing on 3D scanning, architecting the app, and tackling hardware integration challenges. You'll collaborate with teams to translate user needs into technical solutions and establish CI/CD processes.

Design, develop, and test software applications while mentoring junior developers and collaborating with cross-functional teams. Analyze data, solve problems, and create user-friendly products with a focus on engineering excellence.