Software Engineer Jobs in Cambridge, MA

Founding engineer responsible for building and scaling 0-to-1 AI-powered products for wealth management. Owns end-to-end user experiences, partners with clients and internal teams, establishes architecture and product strategy, and develops applied AI systems including agents, harnesses, models, workflows, memory, context, and evaluations.

Build and own cloud-based backend systems for large-scale, real-time home security video streaming and recording. Responsibilities include architecture, implementation, maintenance, performance optimization, documentation, on-call support, technical decision-making, code reviews, and mentoring. The role requires deep expertise in video streaming standards, cloud storage, metadata indexing, and media technologies, along with extensive cloud experience and at least 10 years of industry experience.

Develop and maintain native iOS applications using Swift and SwiftUI for DraftKings’ financial platform. Collaborate with product, design, analytics, and engineering teams to build features, integrate APIs, manage data, optimize performance, monitor reliability and crash analytics, and troubleshoot issues. Participate in code reviews, testing, and mobile release processes while delivering scalable, compliant, user-focused experiences.

Software engineering internship at DraftKings for Summer 2027. The provided description emphasizes building technology in an AI-focused, regulated gaming environment, but does not include specific responsibilities or qualifications.

Develop and train whole-body loco-manipulation policies for humanoid robots, deploy learned behaviors to physical hardware, improve motion retargeting and simulation fidelity, and build scalable evaluation and robot-learning infrastructure. The role bridges research and production engineering across reinforcement learning, simulation, control, perception, and hardware deployment.

Optimize GPU performance for Zoox’s motion planner, including profiling GPU hotspots, adapting software to multiple GPU architectures, reducing ML model latency and memory usage, and developing or optimizing CUDA kernels. Serve as a CUDA and GPU performance subject matter expert while working with complex multiprocess robotic systems in a Linux and C++ environment.

Develop software that orchestrates and controls quantum hardware, including pulse sequencing, device coordination, real-time control, APIs, middleware, diagnostics, calibration, automation, testing, and system integration. Collaborate with physicists, architects, and hardware engineers to build reliable, high-performance quantum operation systems.

Build and maintain full-stack features supporting member acquisition, onboarding, engagement, and retention. Develop frontend applications with modern web technologies, optimize APIs and infrastructure for e-commerce and growth experiments, troubleshoot production issues, improve reliability, participate in code reviews, and collaborate with product, design, and engineering teams in an iterative environment.

Build backend systems for ingesting, processing, and exposing health record data from EHRs and third-party platforms. Develop secure APIs, scalable data pipelines, and services that normalize and validate sensitive healthcare data. Collaborate with product, data science, and engineering teams, while contributing to code reviews, testing, documentation, privacy, security, and access control practices.

Build and maintain secure, scalable full-stack clinical tools for healthcare providers and internal teams. Develop React and TypeScript interfaces backed by Java services, RESTful APIs, Postgres, Kafka, and AWS infrastructure. Translate product requirements into technical solutions, protect sensitive health data, write tested and maintainable code, participate in reviews, and collaborate with Product, Design, Clinical, Data Science, and Engineering teams.

Build and maintain backend infrastructure and member-facing generative AI features that deliver personalized health and performance insights. Collaborate with Product, Design, Analytics, and Data Science teams to define requirements and deliver scalable solutions. Develop reliable software using Java, Kafka, AWS, and PostgreSQL; design RESTful APIs and relational databases; optimize performance; and maintain observability and monitoring systems.

Designs and maintains scalable backend services, APIs, data pipelines, automation, workflows, and business-system integrations. Collaborates with product, data, and internal business teams to deliver reliable technical solutions. Improves system performance, security, reliability, and maintainability; contributes to technical strategy, code reviews, and mentoring junior engineers.

Build and maintain full-stack systems supporting WHOOP’s design system and translation infrastructure. Develop reusable React and TypeScript components, backend services, RESTful APIs, localization pipelines, RTL and bidirectional text support, and accessible responsive interfaces. Collaborate with Design, Product, Platform, and Localization teams while improving CI/CD tooling, frontend architecture, design tokens, and cross-platform component libraries.

Design, build, and deliver scalable backend services powering WHOOP’s member-facing fitness, sleep, recovery, and integration experiences. Collaborate with engineering, product, design, data science, and performance science teams; translate requirements into technical plans; improve reliability, performance, testing, monitoring, and observability; and contribute through code reviews, documentation, knowledge sharing, and mentoring.

Develop and maintain scalable backend systems, APIs, and microservices supporting WHOOP’s platform and member experience. Collaborate cross-functionally to deliver features, improve reliability and performance, implement secure coding practices, and strengthen engineering standards. The role may align with Product Security or Application Infrastructure, involving cloud infrastructure, developer enablement, observability, and data privacy.

Build and maintain performant, responsive, mobile-first web applications using Next.js, React, and Tailwind CSS. Translate product goals into polished member-facing experiences, prototype and ship features with AI-assisted workflows, integrate RESTful APIs, and collaborate with product, design, and backend teams. Establish frontend best practices for architecture, accessibility, performance, and maintainability while contributing to UX decisions and navigating ambiguous problems.

Develop, test, and deploy scalable internal software, APIs, data pipelines, automations, and integrations supporting business operations. Collaborate with Finance, Supply Chain, Manufacturing, Quality, Logistics, Membership Services, and other stakeholders to translate business needs into technical solutions. Maintain systems including NetSuite, Salesforce, Stripe, and Boomi, while improving reliability, security, and performance. Contribute to engineering best practices and mentor engineers across teams.

Develop and optimize scalable backend services, APIs, and infrastructure supporting acquisition funnels, e-commerce, membership growth, and experimentation. Write tested Java code, collaborate cross-functionally, contribute to architecture and code reviews, and deliver sprint commitments. Partner with data scientists and analytics engineers to measure performance and support growth initiatives.

Develop and maintain backend services and APIs using Java, Kafka, PostgreSQL, and AWS. Collaborate with product, design, data science, and engineering teams to deliver scalable features. Write tested code, participate in reviews, monitor production systems, troubleshoot issues, document solutions, and contribute to reliability and performance improvements.

Designs, builds, tests, and optimizes scalable control-plane and data-plane network services. Develops APIs, improves performance, monitoring, reliability, and customer experience, while supporting existing products and establishing engineering best practices. Collaborates across teams on API contracts, cloud-native systems, and mission-critical software. Mentors engineers and contributes to automation, testing, deployment, and production operations.

Design, develop, and optimize high-performance network datapath software for cloud infrastructure. Build packet-processing, routing, forwarding, observability, and hardware-accelerated networking systems across Linux hosts, kernels, user space, and NICs. Investigate production performance and reliability issues, create testing and benchmarking frameworks, author technical designs, collaborate across infrastructure teams, and mentor engineers.

Develop and maintain scalable cloud network control-plane software, including APIs, services, tools, and customer-facing products. Implement, test, optimize, and support high-performance distributed systems while improving reliability, monitoring, development processes, and architecture. Collaborate across networking teams to establish API contracts and build next-generation products using Go, Kubernetes, Docker, Kafka, gRPC, and related cloud technologies.

Participate in Fidelity’s 10-week Leap Program to build scalable applications and features, develop software across the full lifecycle, write and test code, deploy through automated pipelines, and responsibly use AI tools. Collaborate with engineering teams on production projects supporting millions of financial-services customers while receiving mentorship and career development.

Develop scalable, automated software that improves product and platform security. Build and maintain full-stack applications, including front-end interfaces, application frameworks, data management, analytics, and visualization tools. Provide performance insights to customers and internal teams, research relevant technologies, and collaborate with multidisciplinary teams to deliver effective solutions.

Develop and maintain full-stack features for a SaaS platform supporting clinical trial workflows. Responsibilities include Python-based application development, frontend collaboration, architecture, testing, code review, refactoring, reliability, data integrity, and regulatory compliance. The engineer will collaborate with product, design, machine learning, infrastructure, clinical, QA, and regulatory teams while contributing to a distributed engineering organization.