Top Software Engineer Jobs in Peoria, IL

The Sr Software Engineer leads technical integration solutions for consumer lending at MeridianLink, overseeing the architecture, design, and development of secure APIs and mentoring team members.

The Senior Software Engineer will develop and enhance features for the Keeper Browser Extension, ensuring quality, security, and performance, while collaborating with cross-functional teams and following coding best practices.

The Senior Software Engineer will diagnose, develop, and deploy solutions for deployed autonomous software, focusing on technical discovery, rapid software fixes, tooling improvements, and cross-team collaboration.

The Senior Software Engineer will build full-stack solutions, design scalable features, mentor team members, and manage the development lifecycle.

Lead design and development of highly available payment processing, subscription billing, settlement, refunds, and reporting systems. Integrate with external payment processors and APMs, ensure automated build/test/deploy pipelines, debug production issues, optimize performance, decompose features for incremental releases, conduct design/code reviews, mentor junior engineers, and incorporate regulatory requirements (PCI‑DSS, PSD2/SCA, 3DS2).

Lead design, implementation, and operation of Signifyd's GCP/Kubernetes cloud platform. Architect scalable, secure infrastructure, embed AI-driven automation, own SLOs and incident response, improve developer experience via CI/CD/GitOps tooling, mentor engineers, manage cloud capacity/FinOps, and build observability and security into the platform.

Design, develop, and operate automated system and performance tests for cloud-based enterprise web/mobile applications. Build and improve automation frameworks (Selenium, Jest, Cucumber), implement API and performance tests (RestAssured/Karate, JMeter/Gatling), collaborate with developers and BAs for ATDD, and troubleshoot performance issues with DevOps teams.

Lead frontend architecture and technical direction for shared UI systems and design system. Build, maintain, and document reusable component libraries; collaborate with UX, product, and engineering. Champion accessibility, testing, performance, and design-to-code workflows. Mentor engineers, review contributions, and deliver major UI initiatives end-to-end while balancing technical debt and product needs.

As a Software Engineer at Impiricus, you will design, develop, and optimize digital healthcare solutions, with responsibilities in software development, technical leadership, and cross-functional collaboration.

Serve as technical lead for software development, testing, deployment support, release management, requirements analysis, defect resolution, and technical oversight for MIS. Lead development, testing, UAT, Section 508 compliance, performance/capacity testing, documentation, and modernization/migration efforts.

Lead frontend architecture and product development for member-facing web and mobile apps. Build high-performance, accessible React/React Native UIs, own end-to-end features including APIs and backend services, mentor engineers, drive design system and frontend standards, and collaborate with Product, Design, Clinical, and Data teams to deliver scalable, user-centered health experiences.

Design, implement, and maintain high-performance backend services in Go deployed on GCP and AWS. Build banking/payment APIs and compliance-focused fraud detection products. Collaborate cross-functional teams, own full product lifecycle, produce technical documentation, and implement end-to-end test automation using Cypress, JUnit, or Mockito to ensure reliability and quality.

Lead design and delivery of customer-facing data product applications, building full-stack experiences (frontend, backend, APIs) using TypeScript, React, Node.js, and Python. Partner with Product and data teams to convert analytics and prototypes into production-grade workflows, establish software engineering best practices, mentor engineers, and prioritize customer value through testing, observability, and operational ownership.

The Staff Software Engineer will design and build user-facing features for clinical AI applications, ensuring quality and security while collaborating cross-functionally.

Lead design and architecture of cloud-first, full-stack enterprise software. Provide technical leadership, mentor engineers, promote automated testing and CI, improve scalability, troubleshoot issues, and deliver complex projects on time.

Design, build, and maintain performant web applications in an agile, TDD-driven environment. Lead technical decisions, collaborate with product and design, deliver high-quality code, participate in on-call rotation, and ensure system reliability and availability.

Lead architecture and technical strategy across an infrastructure platform ecosystem. Drive hands-on architectural improvements to graph engine and backend services, reduce technical debt, establish standards, champion AI-first engineering practices, run architecture/code reviews and mentorship, and collaborate with product and leadership to ensure scalable, extensible systems.

Design, build, and optimize scalable cloud and web software with focus on infrastructure, performance, and hardware integration for IoT devices. Collaborate with hardware teams to ensure connectivity and high availability, implement new features, and improve system efficiency.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across the SDLC, drive feature development, conduct code reviews, support CI/CD and DevOps practices, and ensure system performance, security, and reliability.

The Senior Software Engineer will develop high-performance C++ and Python services, create data pipelines, design APIs, and ensure system observability and performance in a hands-on, fully remote role.

This role involves building product, shaping company culture, developing web applications, writing APIs, and planning sprints. You'll collaborate with design and engineering teams to enhance user experience and take part in hiring.

Design and scale core infrastructure for an exchange platform focusing on latency and performance, while building APIs and managing technical relationships with clients in the sports prediction market.

As a Senior Software Engineer, you will design and implement a high-performance Solana validator client in Zig, translate Rust code, optimize performance, and collaborate with a team.

Build and own device fingerprinting and fraud detection capabilities for Stytch on Twilio. Partner with product and engineering leadership to define roadmap, author design docs, drive technical decisions, improve production resilience, and mentor other engineers. Operate with high ownership across cross-team integrations and on-call responsibilities.

The Principal Software Engineer will drive the technical roadmap for Panthey's hosting platform, architect core services, and provide technical leadership and mentoring to engineers. They will work on distributed systems, container orchestration, and AI-native engineering practices, ensuring platform reliability and performance.