Top Software Engineer Jobs in Peoria, IL

Build and ship frontend features for a financial marketplace using React and Next.js. Collaborate with product, design, and backend engineers; contribute to architecture, component design, code quality, tooling, and the shared component library. Own work from design through delivery, participate in pairing and code reviews, and use AI-assisted development tools thoughtfully.

Build and ship end-to-end features for Augment’s iOS app, collaborate closely with product, design, backend, and fellow iOS engineers, and contribute to architecture, code quality, tooling, and long-term product health. The role emphasizes Swift and SwiftUI development, ownership, thoughtful collaboration, feedback, and effective use of AI-assisted development tools.

Develop and maintain full-stack product features, REST APIs, ERP integrations, and AI document-capture capabilities for NG and SMRTR TRAC. Work with Vue, TypeScript, Node.js, Scala, PostgreSQL, and MongoDB; improve reliability, performance, security, and test coverage. Translate customer and business requirements into software, estimate work, support production go-lives, troubleshoot issues, document solutions, and collaborate with engineering, sales, professional services, and customers.

Build Apollo’s AI-powered Builder Studio end to end, including chat-driven app creation, live previews, generated-app runtimes, workflows, integrations, delegated permissions, security, and reliability. The role requires strong full-stack development, production LLM experience, frontend expertise with complex UIs, backend and workflow design, and ownership of an ambiguous 0-to-1 product.

Design, develop, debug, and improve Elastic’s cloud control-plane offerings. The role involves guiding cross-team architecture, leading development best practices, creating technical plans, diagnosing complex failures, prioritizing fixes and features, and collaborating with Support and Elasticsearch engineering teams. The engineer will contribute to reliable, scalable SaaS foundations while providing pragmatic technical leadership across a distributed engineering organization.

Build and maintain Turso’s open-source database and cloud platform. Responsibilities include advancing PostgreSQL compatibility, ensuring software correctness through testing and verification, operating cloud APIs and data planes, and scaling systems to support substantially more databases. The role involves Rust development, embedded database technology, large-scale cloud operations, observability, reliability, performance improvements, and collaboration with customers, open-source communities, and distributed teams.

Develop, test, document, maintain, and integrate software applications supporting business needs. Responsibilities include writing clean code, fixing bugs, improving performance, troubleshooting, documenting systems, collaborating with engineers and business analysts, and participating in agile development processes.

Build and operate distributed backend services and APIs for Airbnb’s global AirCover insurance platform. Develop policy, coverage, enrollment, and regional-rule capabilities; translate product and regulatory requirements into reliable code; and support experimentation, analytics, monitoring, and data protection. Collaborate with Product, Design, Data Science, Legal, infrastructure, security, and privacy teams. Participate in technical design, code reviews, on-call rotations, and ongoing reliability improvements.

Build and evolve Fetch’s backend data platform, including pipelines, governed data access, delivery infrastructure, and partner integrations. Own ambiguous technical problems, lead cross-system initiatives and migrations, improve reliability and engineering efficiency, shape technical direction, collaborate across teams, and mentor engineers. The role requires strong platform engineering judgment, scalable systems experience, operational awareness, and the ability to influence stakeholders in an evolving environment.

Build and own user-facing features and core platform architecture across frontend, backend, and ML pipelines. Integrate AI workflows (LLMs, embeddings) for curriculum generation and automated evaluation. Manage end-to-end development: requirements, design, implementation, CI/CD, testing, observability, and iteration while collaborating with product, design, ML, and customer teams.

Develop and maintain high-reliability, high-throughput backend systems for managing security certificates and configurations. Responsibilities include designing scalable systems, building features, optimizing performance, working with relational and NoSQL databases, and collaborating with testing and SQA teams on deployments. The role requires project-based experience with Java, Spring, Spring Boot, Angular, Terraform, SQL, Linux/Unix, and database technologies.

Design, build, test, and improve secure, scalable software systems that process massive datasets. Develop distributed, cloud-based applications, REST APIs, and multi-database solutions while contributing to testing and software lifecycle improvements. Collaborate through agile practices and pair programming, and mentor less experienced engineers. The role emphasizes quality, performance, system design, and modern cloud technologies.

Develop incident-response dashboards and SLO-based alerts, improve logging, metrics, tracing, authentication, and infrastructure observability, benchmark cloud storage, review security and network configurations, optimize costs, build application features, create infrastructure-as-code for AWS, GCP, and Azure, and support IAM needs.

Design, build, operate, and maintain highly available distributed telemetry systems for Grafana Cloud and open-source projects. Deliver features end to end, improve reliability and performance, review code and designs, manage releases, participate in follow-the-sun on-call rotations, and collaborate remotely with teammates and customers. Work primarily with Go across Kubernetes-based cloud infrastructure and observability systems such as Mimir, Loki, Tempo, and Pyroscope.

Design, build, operate, and maintain large-scale distributed telemetry systems for Grafana Cloud and open-source projects. Deliver features from concept through production, improve reliability and performance, participate in design reviews and on-call rotations, contribute to roadmap decisions, and collaborate remotely with engineers. The role focuses on Go-based cloud services running on Kubernetes across AWS, GCP, and Azure, with observability, DevOps, and customer-focused software development responsibilities.

Develop and maintain Intelerad’s Unified Storage Layer and cloud storage services for medical imaging applications. Responsibilities include designing software features, translating support and stakeholder requirements into solutions, debugging cloud infrastructure, managing Kubernetes, Terraform, AWS, and CI/CD environments, reviewing code, documenting systems, and delivering work within an Agile/Scrum team.

Build and maintain authentication and fine-grained authorization systems using Auth0 and OpenFGA. Own OAuth 2.0 and OpenID Connect implementations, identity federation, token flows, and permissions for AI agents. Lead cross-team technical projects, set engineering standards, review code, and mentor engineers. The role requires strong backend development skills and experience with identity providers, ReBAC systems, and complex multi-tenant authorization models.

Designs and implements scalable application networking features for Elastic Cloud, including ingress, security controls, private connectivity, and DNS. The role involves performance analysis, load testing, monitoring, incident troubleshooting, root cause analysis, and developing diagnostic tools. The engineer collaborates across teams to meet networking requirements, improve platform reliability, and apply best practices using Golang, Kubernetes, cloud networking, and distributed systems technologies.

Build and own OpenRouter’s financial infrastructure, including flexible pricing, quote-to-cash automation, usage metering, billing, payments, collections, double-entry ledgering, provider settlements, and reconciliation. Ensure financial correctness through idempotency, auditability, anomaly detection, and access controls. Partner with Provider, Trust & Safety, Sales, Customer Success, and Finance teams to deliver scalable usage-based financial systems.

Develop and launch scalable full-stack Quora features using Python and React. Collaborate with designers, product managers, engineers, and data scientists to improve user engagement, moderation, creator experiences, and AI-powered content. Use experimentation and data to guide product iterations, contribute across the development lifecycle, and participate in on-call support for reliable service delivery.

Develop and scale backend Java and Kotlin software powering patch discovery, packaging, and deployment across millions of endpoints. Design scalable systems, APIs, data structures, caching solutions, and relational databases while maintaining high testing and code-quality standards. Collaborate with AI workflow, server, platform, design, and product teams. Occasional React or Angular work may support patching workflows and dashboards.

Designs and evolves AWS infrastructure as code using CDK, develops backend software primarily in TypeScript, and applies secure engineering practices for regulated environments. The role contributes to architecture, code reviews, CI/CD pipelines, production support, observability, and on-call operations. It collaborates cross-functionally, builds scalable and reusable systems, supports SOC 2 compliance, and uses AI coding assistants to improve development, testing, and documentation.

Own and deliver complex full-stack software features for custom labs and related applications. Design, build, test, document, and maintain APIs, databases, user interfaces, infrastructure, and libraries using C# or JavaScript/TypeScript. Lead AI-assisted development workflows, review generated code, ensure security and quality, collaborate with cross-functional Scrum teams, estimate scope, and participate in on-call support.

Develop and maintain a Ruby on Rails EHR platform across front-end and back-end layers. Resolve production defects, build features, optimize SQL queries, write automated tests, participate in Agile delivery, and follow secure development practices for PHI. Collaborate with product, QA, and engineering teams while using AI-assisted development tools. Healthcare, EHR, interoperability, HIPAA, pharmacy workflow, CI/CD, and modern front-end experience are required or preferred.

Build and maintain full-stack monetization features across web and mobile, including enrollment flows, paywalls, subscriptions, reactivation, and marketing integrations. Collaborate with Product, Design, Marketing, and Data teams to run experiments and improve revenue outcomes. Use analytics, observability, AI-assisted development, testing, and software engineering best practices to deliver reliable products for millions of customers.