Top Remote Senior Backend Engineer Jobs in Boston, MA

As a Senior Backend Engineer, you will design and deliver complex systems, ensuring reliability, security, and performance while mentoring junior engineers and collaborating across teams.

Founding engineering role to architect and build core backend platform components. Design and implement scalable, distributed Java/JVM systems, apply solid testing and CI/CD practices, collaborate with CEO/CTO, and work in an agile early-stage fintech startup environment.

Design and implement durable, fault-tolerant AI orchestration and backend systems using Temporal and agentic ReAct patterns. Deliver features end-to-end with testing, CI/CD, monitoring, and observability; mentor engineers and collaborate with cross-functional teams to translate legal workflows into reliable AI-powered features.

As a Senior Backend Engineer, you will architect and optimize backend services for e-commerce, ensure reliability, enhance CI/CD pipelines, and mentor team members.

As a Senior Backend Engineer at Akkio, you'll design and build backend systems for an AI-driven platform, lead projects, mentor junior engineers, and optimize cloud infrastructure.

Design, scale, and optimize ClickUp's search infrastructure using OpenSearch/Elasticsearch. Improve relevance, speed, and real-time indexing, build vector search capabilities, create evaluation frameworks, and collaborate with AI/backend/product teams to integrate and troubleshoot search at scale.

Design and build API tooling, integrations, and mission-critical distributed platform services. Own API Gateway integrations and service lifecycles, drive API governance, improve shared services, and support platform capabilities powering ClickUp's AI initiatives (Brain and Agents). Collaborate across teams in an agile environment to accelerate product development.

As a Senior Backend Engineer, you will build APIs and integrations, develop fault-tolerant systems, mentor engineers, and ensure code quality.

Build and maintain automated ETL/ELT data pipelines, improve data quality and monitoring, optimize Postgres and BigQuery schemas and queries, develop internal tooling, support data governance (HIPAA), participate in on-call rotation, and collaborate across engineering teams to scale data systems.

As a Senior Backend Engineer at Offchain Labs, you'll tackle complex distributed systems challenges, optimizing performance and contributing to the security and scalability of blockchain technology.

Build and optimize Nitro node software powering Arbitrum: improve transaction execution, state management, networking, throughput, performance, reliability, observability, and security. Design and operate distributed systems at scale and add runtime capabilities such as Stylus/WASM for smart contract execution.

Build and operate distributed systems for profile ingestion and queries in Pyroscope. Lead projects end-to-end, participate in on-call rotations, mentor teammates, design for reliability and performance, and work closely with customers and Grafana Cloud teams.

Senior Backend Engineer responsible for building, deploying, and monitoring backend applications. Collaborate with product and cross-functional teams to design/version APIs, build event-driven/asynchronous systems, improve performance and reliability, and drive CI/CD and observability best practices. Ship high-quality, well-tested features and support platform scalability and maintainability.

The role involves designing and developing high-performance web apps, improving user interfaces, maintaining component libraries, and ensuring code quality through comprehensive testing and collaboration with other teams.

Design, build, and support features for a monetization platform while ensuring reliability and performance as a senior backend engineer.

The Backend Engineer will design and maintain scalable backend services, develop APIs, optimize data storage, and ensure system performance and reliability, collaborating with various teams.

Design, build, and scale backend services for payments and transaction processing. Lead projects and mentor engineers in a collaborative environment.

The Senior Software Engineer will lead and support a team in developing reliable and scalable backend systems, collaborating on product development, and improving infrastructure for secure communication between services.

The role involves developing a decentralized darkpool with high-performance matching engine, cross-chain liquidity aggregation, and fault-tolerant architecture while ensuring cryptographic privacy and low latency.

Build, enhance, and maintain backend services and REST APIs in Go; develop ETL pipelines in Python; design reliable PostgreSQL-backed APIs; use AWS services (S3, Lambda, Step Functions, Glue) for data processing; write well-tested, secure code; support operations and maintenance; participate in code reviews and cross-functional Agile collaboration.

Build and own the graph layer and RAG architecture enabling agent reasoning over full patient context. Select graph DBs, design query patterns, and ensure temporal coherence. Implement event-driven Kafka pipelines for auditable, immutable agent workflows and enforce ReBAC permissions. Prioritize safety and scalable AI-assisted workflows, participate in spec and plan reviews, and drive architecture decisions.

The Senior Back-End Developer builds and maintains server-side operations for cloud solutions, collaborating with teams to deliver software, support users, and document features.

The Senior Backend Engineer will lead client projects, build AI solutions, and develop technical standards while mentoring junior engineers.

Design and implement data infrastructure for Oura's Context Hub. Responsibilities include building data pipelines, defining data models, creating APIs, and ensuring system resilience in production environments.

The Senior Backend Engineer will develop financial technology solutions, focusing on transparency in consumer lending through modern API development and data analytics, while collaborating with various teams to enhance product offerings.