Backend Developer Jobs in Missouri, United States

Photon Group Backend Team builds mission‑critical microservices for high‑volume data streams. The role designs and implements scalable Java/Spring Boot services, architecting event‑driven systems with Apache Kafka and deploying containers on AWS EKS. Based in the United States, the position requires on‑site presence with a flexible 9‑5 schedule.

Backend Developer at Baanx will design, build, and maintain high‑performance services for digital asset platforms. The role focuses on Node.js microservices, PostgreSQL data stores, and integration with crypto custodians, exchanges, and other third‑party APIs.

Freedom Technology Solutions Group seeks a Backend Developer SME to lead backend and geospatial initiatives, modernize applications, enforce DevSecOps, and drive cloud-native architecture. Responsibilities include defining enterprise architecture, overseeing backend operations across cloud and data center, leading CI/CD pipelines, and engaging senior client leadership.

We are seeking a versatile Backend Developer to join our engineering team. The role involves designing, building, and maintaining server‑side logic and infrastructure that powers our applications.

NV5 Geospatial (NV5G) builds core backend services leveraging Esri products for national security GIS solutions. The developer designs and implements Python and Node.js APIs, containerized ArcGIS Enterprise tools, and data ingestion pipelines, collaborating with platform, DevOps, and GIS teams.

Backend Developer needed to design and build robust Java/J2EE solutions within the NAV domain. Collaborate with tech leads, architects, and product owners to define technical strategies, develop APIs, web services, and database schemas on DB2/Oracle.

Photon Group is seeking a Backend Developer in Dallas, TX, United States to design, develop, and scale mission-critical backend services. Day-to-day work involves building robust microservices and real-time event-processing systems using Java and Spring Boot, architecting event-driven systems with Apache Kafka, designing RESTful APIs, and deploying containerized applications on AWS EKS. The role requires a Bachelor's Degree and a deep understanding of distributed systems and event-driven pattern

Versatile Backend Developer to design, build, maintain scalable server-side logic for enterprise services and microservices using Java (Spring Boot) and Python (Django/FastAPI). Collaborate with frontend and DevOps, implement REST/GraphQL APIs, optimize SQL/NoSQL databases, ensure security with OAuth2/JWT, write unit/integration tests, optimize performance, participate in Agile ceremonies.

Principal Backend Developer – 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.

Photon Group seeks a Backend Developer – Database to build high‑performance services on Google Cloud. The role requires deep expertise in Java, Spring Boot, SQL/PL‑SQL, and cloud‑native architecture.

Photon Group is seeking a Java Backend Developer to design, develop, and maintain scalable enterprise backend applications. The role involves building microservices-based architectures, developing RESTful and SOAP web services, implementing security best practices, optimizing performance, and collaborating with cross-functional teams including architects and product owners.

Backend Engineering at Bjak builds the core systems behind the AI Neobank app, delivering reliable APIs and financial product infrastructure at scale. The role designs, implements, and maintains backend services for onboarding, payments, KYC, and risk flows while collaborating with product, frontend, mobile, and AI teams.

Photon Group’s Backend Engineering team builds high‑availability, cloud‑native services that power enterprise applications. The Senior Backend Developer designs and implements Java and Python microservices, optimizes AWS infrastructure, and ensures secure, scalable APIs.

Hertz Car Rental seeks a Senior Backend Engineer to design, build, and scale critical rental systems powering core business operations across the United States. You will partner with cross-functional teams to deliver highly scalable, resilient microservices and modern customer-centric experiences while mentoring junior engineers.

Senior Backend Developer to design, develop, and deploy enterprise-scale services, architect secure DevSecOps pipelines, migrate and modernize AWS applications, integrate geospatial solutions, set technical standards, lead teams, mentor developers, evaluate performance, and support proposal writing for intelligence analysis products.

Photon Group is hiring a Backend Java Developer (Full Stack Developer – Advanced) in Jersey City, US, to design, develop, and maintain scalable, high-performance web applications. The role involves building responsive frontends with modern JavaScript frameworks, developing robust backend services, APIs, and microservices, integrating with RESTful/GraphQL APIs, designing and optimizing relational and NoSQL databases, and collaborating with cross-functional engineering teams.

Backend Developer on Turnblock.io's Blockchain Distribution Network team, building critical-path infrastructure for decentralized finance. Designs, implements, tests, and deploys new features in rapid cycles within an agile environment.

Blockchain Distribution Network (BDN) team at Turnblock.io builds a decentralized infrastructure enabling DeFi traders to execute better trades. The Backend Developer GoLang designs, implements, tests, and deploys new features in short cycles for critical-path services.

ActioNet’s IgniteAction team seeks a Senior Developer to design and maintain advanced RESTful APIs for large-scale public data discovery and analytics applications. The role involves full lifecycle development, database optimization, and cloud-native ETL support using Java and AWS. This is a remote position based in the United States.

This Senior Backend Software Developer role builds backend software powering a new generation of electric-vehicle customer experiences for a partner company. You will own the full development lifecycle—from architecture and system design through implementation, testing, and operations—while collaborating with product and UX teams in a fast-moving startup environment.