Backend Developer Jobs in Massachusetts, United States

Senior Java Backend Developer at BBH builds scalable, high‑performance Java applications for reporting infrastructure. Leads design, development, code review, and mentorship.

Run and Release platform team at Humana secures the enterprise software supply chain by providing a centralized application security posture service. The Senior Backend Developer/DevSecOps Engineer builds and optimizes .NET microservices, designs CI/CD gating logic, and automates Azure infrastructure with Terraform and Python, while collaborating with developers to improve security and reduce technical debt.

Backend Engineer at Modulate building scalable APIs for conversational voice intelligence platform. Drive API design, development, and production operations to support enterprise and developer customers.

DraftKings Exchange team builds the high‑performance trading platform powering DraftKings' new exchange vertical. Senior Software Engineer, Backend designs, builds and maintains scalable Go services for low‑latency transaction processing, collaborates with product, data and trading ops, and drives architecture and reliability improvements.

Abbott, a global healthcare leader, seeks a Software Engineer I (Backend) to design and develop scalable, cloud‑native microservices in Java on Azure. The role focuses on building SaaS applications, leveraging Azure PaaS services (Service Bus, Cosmos DB, Blob Storage, Redis Cache, Identity Manager), and implementing REST APIs with Spring Boot.

Senior Backend Engineer at CVS Health builds scalable microservices, APIs, and data pipelines for internal developer platforms using Java/Spring Boot and Python. Works on cloud-native services on AWS/Azure, containerized deployments, CI/CD, event-driven architectures with Kafka, SQS, RabbitMQ.

Engineering team at Modulate builds a self‑serve Conversation Intelligence Platform that brings voice understanding to enterprise customers. As a Staff Backend Engineer you will design, build, test, and deploy robust, scalable APIs that expose world‑class ML audio models, maintain production reliability, and mentor teammates.

Human-Robot Interaction team at Pickle Robot builds scalable backend systems that enable task planning and robotic workflows on warehouse floors. The role designs, implements, and maintains Python-based services, event‑driven architectures, and APIs that integrate tightly with robotics engineers and real‑world hardware.

Data Platform team at Nexthink builds the core services powering data‑ingestion products for digital employee experience. The Senior Backend Engineer designs, builds and scales distributed Java services handling millions of users, collaborates with product, infrastructure and frontend teams, and ensures reliability on AWS, Docker and Kubernetes.

Flexcompute is pioneering ultra-fast engineering simulation technology, building industry-leading CFD and electromagnetic platforms. The Senior Backend Software Engineer designs and implements scalable HPC‑enabled web APIs, data management pipelines, and hybrid cloud solutions, collaborating with EM and infrastructure teams.

Re:Build Manufacturing AI Product Team builds the first AI‑powered platform for hardware product development, turning unstructured inputs into structured engineering artifacts and orchestrating AI agents for proactive coordination. The Senior Backend Engineer designs RESTful APIs, ingestion pipelines, and AI workflows using FastAPI, PostgreSQL, Celery, LangChain, and GCP services, while ensuring robust, maintainable code and best practices.

Zelis is a healthcare financial technology company modernizing payer, provider, and consumer experiences. They seek a Senior Backend .Net Engineer to build cloud-native microservices on AWS, leveraging C#, .Net 10, Kubernetes, and IaC tools like CDK. The role involves leading development teams, designing scalable solutions, and collaborating with architects and product owners.

Engineering team at Foundation EGI builds software that connects engineering intelligence to leading CAD platforms, enabling AI-driven design workflows. The role designs APIs, integrates CAD systems with cloud-native infrastructure, and develops backend services that translate CAD models into machine‑readable data.

Laminar (formerly H2Ok Innovations) – Platform Engineering builds AI‑powered cloud backend systems that deliver real‑time industrial data insights for sustainability. The Backend Engineer designs, implements and scales APIs, data pipelines and infrastructure‑as‑code, collaborates with senior engineers to optimize performance and security, and supports observability across AWS/Azure environments.

Backend Capability team at CVS Health drives the backend platform, API ecosystem, and third‑party integration layer for its SaaS health suite. The role defines API standards, steers a scalable event‑driven microservices architecture, and leads integration strategy with EHR/EMR systems and emerging AI model APIs.

Semgrep backend team builds fast, reliable infrastructure and APIs that power Semgrep’s code security products at scale. The Senior Backend Engineer designs, builds and maintains backend services, optimizes databases and distributed systems, and integrates third‑party vendors while collaborating with cross‑functional engineers.

Senior Backend Software Engineer at Nexthink will lead the design and development of high‑throughput data pipelines that process millions of messages per second. Working within the Digital Employee Experience team, you will build and maintain microservices using Java, Kafka, Spark, and modern observability tools such as New Relic and DataDog.

Pickle Robot Backend Software Engineering team builds scalable, reliable backend systems that power robotics workflows. The Backend Software Engineer designs and implements architecture, develops event‑driven services in Python and C++, and collaborates with robotics engineers to integrate hardware interfaces.