Backend Developer Jobs in Kansas, United States

Backend team at Bjak builds the core systems behind the AI Neobank app, enabling reliable APIs, workflows and financial product infrastructure at scale. The role designs, implements and maintains services for onboarding, payments, cards, transfers, rewards, travel, FX, KYC and risk, collaborating with product, frontend, mobile and AI teams.

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.

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.

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.

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.

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.

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.

Healthcare Integration Team builds scalable, secure solutions that connect complex healthcare systems. The Senior Backend Developer leads API integration initiatives, designs cloud‑native services using Python, Flask, and AWS, and ensures reliability and performance for enterprise data exchange.

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.

Senior backend developer with expertise in Java, Kubernetes, microservices, AWS, Docker, Kafka, and Spring Boot. Strong experience in J2EE web applications, API security, JSON, XML, PL/SQL, Linux/UNIX, and agile/scrum practices.

Oracle Health platform builds secure, scalable AI‑enabled healthcare solutions. The Senior Application Developer designs, develops and maintains backend cloud‑native services and APIs that power EHR and data platforms, collaborating with product, architecture and operations teams.

Clinical Applications Engineering at Oracle Health builds next‑generation EHR solutions that modernize provider inboxes, messaging, and workflow. The Principal Backend Developer designs and delivers cloud‑native, highly scalable backend services, leads technical decisions, mentors a small engineering team, and ensures reliability for clinicians worldwide.

Oracle Health is building secure, scalable, AI-enabled healthcare platforms that improve patient outcomes and reduce administrative burden. The Principal Application Developer will design, develop, test, and maintain cloud-native services and healthcare applications, collaborating with product managers, architects, and operations to deliver reliable, secure solutions on OCI. Remote, United States, remote work model, relocation assistance available.

Yahoo, a global media and tech company, seeks a Backend Software Development Engineer II to join its Media Platform team. The role focuses on designing, building, and maintaining scalable, high‑performance backend services that power a wide range of Yahoo applications.

We are looking for an experienced Senior Backend Java Developer to lead the design and delivery of microservices for large-scale, mission-critical applications. The role requires deep expertise in Java, Spring Boot, and microservices architecture, along with strong knowledge of cloud platforms (AWS, Azure, GCP), containerization, and CI/CD pipelines.

Senior Java backend lead with 8+ years experience designing microservices, DDD, event‑driven architectures, and cloud platforms (AWS, Azure, GCP). Leads teams in RESTful API design, CI/CD, Docker/Kubernetes, observability (ELK, Prometheus), and performance tuning.

We are looking for an experienced Senior Java Developer with 8+ years of expertise in designing and delivering microservices for mission‑critical applications. In this leadership role, you will define architectural standards, mentor teams, and collaborate with stakeholders to align technology solutions with business goals.

Principal R&D Engineer leading backend development for medical device software. Design, build, and maintain scalable, secure Java/Kotlin services, relational databases, REST APIs, GCP cloud, Docker, Spring, Hibernate, Redis.

Senior Backend Developer with 10+ years of Java experience, leading microservices architecture, DDD, cloud, CI/CD, observability, and mentoring teams to deliver mission-critical applications.