Top Software Engineer Jobs in Peoria, IL

Lead full‑stack engineering projects across frontend and backend, design system architecture, collaborate with ML researchers and clinicians, implement user‑facing features, define APIs, write tests (unit/integration/e2e), produce technical specs, and use cloud infrastructure and CI to ship iteratively.

Designs and architects digital products using modern tools and frameworks, implements, tests, and documents software, owns production operations and KPIs, partners with product managers, leads standups and retrospectives, coaches engineering practices (pairing, TDD), and establishes CI/CD pipelines and monitoring.

Design and build scalable shared platform systems and libraries used across product teams, define APIs and standards, influence cross-team architecture, perform code reviews, and maintain documentation to improve developer experience and platform reliability.

Full-stack Senior Software Engineer building and maintaining the Flex web platform. Deliver production-ready features using Node.js and TypeScript/JavaScript with component frameworks (Vue/React). Apply system design, data structures, performance optimization, cloud and CI/CD practices, and relational databases. Leverage generative AI across the SDLC, mentor peers, own projects end-to-end, and collaborate in an agile team.

Technical leader responsible for designing, building, and maintaining enterprise-scale digital platforms. Provides non-managerial direction to onshore/offshore teams, enforces architecture and coding standards, leads code reviews and CI/CD practices, supports Tier 2/3 incidents, optimizes application performance, and drives continuous improvement across development and operational processes.

Own end-to-end full‑stack feature delivery for a CCM/GRC SaaS platform: design, implement, test, deploy, and maintain frontend (Angular), backend (.NET/C#/Python) services, and data layers (Postgres/SQL Server). Mentor juniors, participate in code reviews, collaborate across engineering functions, and ensure platform reliability and performance.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Lead high-impact, cross-product engineering initiatives as the top individual contributor. Define success, simplify complex systems, shape technical strategy, coach senior engineers, and drive measurable outcomes. Stay hands-on with code and production systems while enabling teams and using AI tools to accelerate delivery.

Build and maintain React front-end and Golang backend services deployed on AWS. Collaborate with Product and planners, write tests, pair program, estimate work in a ScrumBan process, and participate in performance and learning initiatives to improve a fintech planning platform.

Lead frontend architecture and implementation for Slate's digital customer experience. Drive design, code, testing, and delivery across web and mobile, mentor engineers, collaborate with UX/product, and make long-term technical trade-offs to ensure reliability and scalability.

Build and drive enterprise application architecture and integration for operations, supply chain, and commercial systems. Lead platform design (cloud-native, API-first, event-driven), set engineering standards, mentor engineers, advise leadership on technology choices, and deliver scalable, resilient integrations between CRM/ERP and custom operational systems.

Senior software engineer responsible for architecting and implementing high-scale distributed systems, leading small engineering teams, mentoring junior engineers, and delivering reliable cloud-deployed services using Python, container orchestration, and CI/CD best practices.

Design and implement runtime protocols, formats, and systems to capture, serialize, stream, and replay interactive 3D content across engines. Own C++ runtime and C# APIs across editor, build, simulation, streaming, and playback. Optimize for low-latency, determinism, memory and bandwidth constraints, and build AI interfaces for inspecting and invoking engine state.

Lead design and implement large-scale backend storage features for Backblaze's object storage platform, focusing on host-managed SMR support, IO benchmarking and performance optimization, driving technical decisions, mentoring, and delivering production rollouts across thousands of servers.

Work on Backblaze's storage platform (B2 Object Storage and Computer Backup) to improve durability, throughput, and architecture. Lead technical design, drive implementation of large features, shape coding practices, and participate across design, implementation, testing, and rollouts while collaborating proactively in a remote-first team.

The Staff Software Engineer will architect and implement core services and systems, provide technical leadership, and mentor engineers while focusing on scalable, high-performance software development.

Design, build, and operate large-scale, highly available distributed file storage services on Oracle Cloud. Lead architecture and development, troubleshoot and optimize performance, collaborate with product management, and establish operational best practices.

Build and maintain full-stack features for Marine and RV & Camping platforms, use AI-assisted tools responsibly, collaborate across teams, reduce technical debt, troubleshoot issues, mentor engineers, and write automated tests to ensure production reliability.

Build and support TimescaleDB Enterprise on‑prem deployment and management platform. Develop frontend tooling (React/TypeScript), backend services (Go), deployment automation (Ansible), and operational PostgreSQL tooling. Write tests across unit to end-to-end, collaborate with cross-functional teams, translate operational requirements into pragmatic product solutions, and iterate on reliability and usability.

Lead a small engineering team to deliver and operate large-scale Roblox game features. Drive technical planning, estimation, code quality, monitoring, releases, and mentorship while partnering cross-functionally to improve performance and player experience.

Build and maintain full-stack features for a React/TypeScript frontend and NestJS/TypeScript backend, integrate LLM-powered conversational agents, design APIs, auth (SSO/SAML), real-time updates, background processing (AWS SQS), database schemas (PostgreSQL/Sequelize), API docs (Swagger), and tests (Jest/pytest). Collaborate on architecture, code review, and production support.

Senior backend-focused engineer to provide technical leadership across backend, APIs, and data pipelines. Collaborate with product, design, and stakeholders, author documentation, and drive engineering best practices on a distributed remote team building scalable energy software.

As a Staff Engineer, you will design, build, and maintain backend functionality for scalable services, focusing on storage systems and reliability.

Lead and scale GridUnity's quality engineering strategy: harden agent-driven test pipelines, enforce evidence-backed release gates, retire manual tests, build agent-verdict calibration, embed automated testing in CI/CD, mentor teams, define quality metrics, and expand the system across product lines.

Design, develop, test, document, and support secure external data integrations (APIs, file-based interfaces, ETL) using .NET, Azure, Informatica, and Snowflake. Lead technical delivery, perform impact analysis, provide production support, mentor engineers, and ensure solutions meet security, performance, and governance requirements.