Top Senior Software Engineer Jobs in Boston, MA

As a Senior Backend Engineer, you will develop APIs, collaborate with various teams, and manage project priorities while ensuring communication is efficient and inclusive.

As a Senior Full-Stack Software Engineer, you will build AI-centric web applications in TypeScript, manage project priorities, and make technology decisions while collaborating with Product and Design teams.

Principal Software Engineer designing and delivering full-stack, cloud-native solutions across React, Node.js, TypeScript, and Java. The role leads Micro Frontend strategy, AI-driven workflow development, distributed systems architecture, data quality, security, testing, observability, and reliability initiatives. Responsibilities include solving complex technical problems, collaborating cross-functionally, establishing engineering best practices, mentoring engineers, and driving scalable, resilient software delivery in an agile environment.

Build and maintain quantum computer management systems, controls infrastructure, and calibration services. Own mission-critical software, collaborate with physicists and hardware engineers, and develop scalable, efficient systems. Responsibilities include debugging, troubleshooting, designing cloud-native microservices and event-driven architectures, working with scientific instrument data, and supporting system performance and operations.

Leads research software projects for biomedical data visualization and analysis, including genomic, single-cell, spatial omics, and bioimaging tools. Responsibilities include software development, project strategy, testing, documentation, release management, cloud and on-premise deployment, user research, data standards, publications, grant support, open-source community building, collaboration with research consortia, mentoring, and teaching.

The Senior Software Engineer will lead technical discussions, develop innovative software solutions, mentor junior engineers, and enhance data communications systems. They require 5+ years of experience and programming skills in Python, C, and C++.

The Senior Software Engineer will design and develop core modules for an AI-enabled platform, collaborating across teams and mentoring others in a fast-paced environment.

Design, build, and modernize full‑stack web applications and microservices for a real‑time event-driven data and visualization platform. Develop and optimize streaming data pipelines (Kafka, Flink, Spark), integrate observability, caching (Redis), and AI agents, and collaborate with hardware verification teams for scalable, low-latency solutions.

Design and optimize high-performance CUDA kernels, GPU libraries, and ML operators for AI and high-performance computing workloads. Profile GPU code, tune memory and execution efficiency, optimize distributed multi-GPU training with NCCL and RDMA, and integrate custom kernels into PyTorch, JAX, or Triton. Develop benchmarks, regression tests, compiler-level optimizations, mixed-precision paths, and technical documentation while mentoring engineers and evaluating new GPU architectures.

Lead the design, development, and maintenance of middleware for mobile robotic platforms. Build logging, diagnostics, telemetry, observability, process management, and communication frameworks for distributed robotic software. Deploy, validate, and troubleshoot software on physical robots and simulations while providing technical expertise and feature ownership. Collaborate in an agile engineering environment to ensure reliable robot operation.

Lead development of real-time C/C++ software for RF sensor systems, including CUDA-accelerated signal processing, embedded and distributed computing, multi-core CPU/GPU optimization, open architecture compliance, testing, documentation, technical reviews, customer briefings, proposal support, and cross-functional integration. The role requires Secret clearance eligibility, substantial software engineering experience, and approximately 20% travel for integration and field demonstrations.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

The Sr. Software Engineer will design and deliver scalable software that enhances customer interactions and operations, utilizing modern development tools and cloud services.

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

Design, implement, test, and operate core components of a distributed file system. Write high-performance C/C++ for kernel-adjacent and user-space storage, improve snapshots, caching, metadata, and protocol access (NFS/SMB/S3). Build HA stateful services on Kubernetes, lead design and code reviews, mentor engineers, and ensure production reliability, observability, and upgradeability.

Design and implement full‑stack, low‑latency web-based Ground Control Station and C2 systems (map-centric UIs, real-time telemetry, video streaming), lead architecture and APIs, mentor engineers, support field tests and mission deployments, and ensure interoperability with C2 standards.

Build and own Eve's marketing site and GTM engineering stack: integrate and optimize external tools, design AI agents for sales and marketing, implement webhooks and middleware to sync product/CRM data, and create programmatic campaigns and internal tools in partnership with Marketing, Sales, RevOps, and Product to drive growth and automation.

Lead frontend-leaning full-stack implementation work for carrier and enterprise integrations: architect reusable UI and API layers, author RFCs, guide technical delivery, enforce testing and security best practices, and partner with cross-functional teams to scope and ship production integrations.

Lead the technical architecture and strategy for Klaviyo’s developer infrastructure, backend dependencies, platform upgrades, and distributed systems. Improve developer productivity, reliability, scalability, security, and deployment processes. Diagnose complex platform issues, establish monitoring and telemetry, mentor senior engineers, influence cross-functional architecture decisions, and evaluate emerging technologies including responsible AI tools.

Design, build, and operate Klaviyo’s large-scale asynchronous processing and queueing platforms. Develop resilient, low-latency, multi-tenant systems using Python, Go, AWS, Kubernetes, Apache Pulsar, Kafka, and SQS. Own system reliability, observability, scalability, incident response, and SLOs. Collaborate on technical designs, mentor engineers, improve platform tooling and processes, and participate in on-call rotations.

Design, develop, and maintain scalable web applications using React front ends and .NET 8 back ends. Build RESTful APIs and microservices, implement CI/CD with GitHub Actions, troubleshoot performance issues, participate in architecture and code reviews, and mentor junior engineers while collaborating with cross-functional teams.

Designs, develops, tests, deploys, and maintains secure, scalable cloud-native software, APIs, distributed systems, integrations, and event-driven workflows. Owns complex features through production, leads technical delivery, troubleshoots issues, contributes to architecture and code reviews, documents systems, mentors engineers, and improves reliability and engineering practices. Uses approved AI-assisted tools responsibly throughout development while validating quality, security, and maintainability.

Design and lead the technical strategy for search across Vannevar’s products. Build and improve full-text, vector, and LLM-powered retrieval systems, optimizing latency, relevance, index quality, freshness, and performance. Collaborate with ML, product, design, and mission strategy teams to translate user needs into search innovations. Apply expertise in information retrieval, NLP, machine learning, indexing, ranking, query parsing, tokenization, vector search, and evaluation frameworks.

Build and maintain internal systems that collect, organize, and preserve engineering verification data (test results, code coverage). Develop data plumbing, reports, dashboards, and web tools; integrate multiple databases and CI/build outputs; ensure data integrity and traceability to support safety certification and engineering decision-making.

Lead frontend development for Coinbase identity experiences including login, signup, OAuth, account security, and multi-factor authentication. Own projects from design through deployment and monitoring, guide Native versus Webview architecture, author technical designs, resolve systemic technical debt, lead on-call and incident response, and mentor engineers.