Backend Developer Jobs in Illinois, United States

Bitovi is looking for a Backend Developer Consultant to join us as we transform technology delivery. We build and operate distributed backend systems for enterprise clients: Go and TypeScript services, GraphQL APIs, and Kafka-based event streaming, running on AWS. If you want to build exceptional systems, take API design and data flow seriously, and have ideas on how to make delivery more collaborative, validation-driven, and swift, we want to work with you!

Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive and iterative delivery environment?

Yourco builds an app-less employee communication platform that empowers frontline workers across traditional industries. As a Senior Backend Engineer you will design and implement scalable services using Node, MongoDB and PostgreSQL, collaborating with cross‑functional teams to deliver high‑impact features.

FleetWorks is building voice agents to modernize the fragmented U.S. freight booking marketplace. As a Senior Backend Software Engineer in Chicago, you will lead technical delivery for customer integrations, build core platform components, and shape internal tooling while working hands-on with users.

Engineering team at Prolaio builds a cloud‑based data platform for precision cardiology, enabling clinicians and researchers to improve heart disease outcomes. The Lead Software Quality Engineering, Backend role drives test automation, mentors a small team of automation engineers, and directly contributes code to maintain and scale test frameworks while ensuring data integrity and regulatory compliance.

Quo is building an AI-powered platform to unify calls, texts, and customer data for small businesses. As a Senior Backend Engineer, you will code, architect, and own complex components while potentially leading small teams or projects.

Principal Backend Engineer at Parts Town leads design and optimization of scalable microservices powering eCommerce and enterprise platforms. Drives backend architecture, ensuring seamless integration across commerce, CMS, ERP, PIM, and marketing systems.

Tofu core engineering team builds the trust layer for internet hiring by combating AI‑generated fraud. As a Senior Backend Engineer you will develop fraud detection pipelines, design APIs linking detection models to product surfaces, and maintain data pipelines for real‑time signal ingestion.

Job Description: Building trusted markets — powered by our people At Cboe Global Markets, we inspire our people to solve complex challenges together because what we do matters. We provide the financial infrastructure that powers the global economy.

Job Description: Position Summary: Building trusted markets , powered by our people At Cboe Global Markets, we inspire our people to solve complex challenges together because what we do matters. We provide the financial infrastructure that powers the global economy.

Senior Backend Engineer– Remote Bright Vision Technologies is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States. This is a fantastic opportunity to join an established and well-respected organization offering tremendous career growth potential.

We are seeking a Senior Backend Engineer with deep expertise in distributed systems to design, build, and operate large-scale, high-throughput backend services that power mission-critical workloads. In this role you will architect the core platforms that other engineering teams build on, focusing on scalability, reliability, performance, and clean engineering practices.