Top Senior Software Engineer Jobs in Boston, MA

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 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.

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.

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.

As a Senior Software Engineer, you will design and implement software solutions, support integration and testing, and collaborate across teams to address national security challenges.

The Senior Software Engineer develops innovative software solutions focused on estimation theory and machine learning while collaborating with multidisciplinary teams.

Design, build, and maintain scalable, reliable full‑stack systems. Contribute to API and architecture design, write testable code, debug complex issues, improve performance, automate deployments, and mentor junior engineers while collaborating with cross‑functional teams.

The Senior Software Engineer will lead the development of backend services and APIs, design system architecture, and collaborate closely with teams to evolve the Enterprise platform.

Lead cross-team data platform initiatives focused on the Data Lake. Drive architecture and roadmaps for lakehouse storage, compute, orchestration, modeled data layers, and operational automation. Own large, complex programs end-to-end, make high-judgment architectural decisions, establish standards and paved paths, respond to incidents, and mentor senior engineers while aligning stakeholders across engineering, product, analytics, and AI/ML.

As a Senior Software Engineer, you'll design and implement software solutions, support system integration, and collaborate with teams to solve national security challenges.

Design, develop, implement, integrate, and test real-time communications software, primarily in C++. Define software architectures, protocols, and state machines; collaborate with multidisciplinary teams; support laboratory and field experiments; optimize algorithms and performance; and prepare technical documentation. The role supports large-scale communications demonstrations and advanced laser communication systems for national security and space defense applications.

The job requires a Software Engineer with a minimum of 5 years experience in C# and WPF development, along with knowledge of BLE and XAMARIN.

Build and maintain backend services in Kotlin/Spring Boot, contribute to frontend UI with JavaScript/TypeScript (React/Vue), work with SQL/NoSQL databases, containerization (Docker/Kubernetes), and design RESTful APIs. Collaborate on cloud-native, event-driven architectures and developer tooling.

The role involves designing and building user interfaces for industrial automation systems, improving frontend architecture, collaborating with backend engineers, and ensuring quality through testing and code reviews.

As a Senior Software Engineer specializing in Distributed Systems, you'll design and implement scalable platforms, optimize data pipelines for durability and low latency, and impactfully contribute to service ownership.

Develop, integrate, and field autonomy software for expeditionary unmanned aircraft (V-BAT/X-BAT). Own features from software-in-the-loop to live flight tests, collaborate with aircraft and perception teams, lead technical integration, support field deployments and mission testing, and troubleshoot hardware/software issues.

Develop, integrate, and field autonomy software for launched effects platforms, owning features from design through live flight testing. Drive technical execution, collaborate with autonomy, perception, and vendor teams, support system bring-up and field operations, and implement C2 interoperability and deployment processes. Travel to tests and customer exercises to support mission execution and debugging.

Lead technical delivery and integration of autonomy software for V-BAT and X-BAT, defining flight-autonomy interfaces, integrating payloads and mission autonomy, coordinating cross-team engineering, ensuring mission readiness, supporting flight tests and deployments, mentoring engineers, and improving integration workflows and testing infrastructure.

Lead technical delivery and integration of autonomy software for new platforms (air, maritime, space). Own end-to-end development, testing, and fielding of autonomy features, mentor teams, drive architecture and ICDs, support live tests, and transition R&D into operational capabilities.

Lead and mentor engineering teams to build distributed microservices and full‑stack cloud solutions for risk management. Collaborate with product managers, deliver scalable AI‑enhanced systems, and apply modern tooling (containers, databases, cloud).

Design, build, test, deploy, and support production-grade backend services, APIs, and cloud-enabled platform capabilities for wealth custody and clearing. Collaborate with product, architecture, risk, and operations to ensure secure, scalable, observable, and resilient integrations and workflows. Participate in Agile delivery, troubleshoot production issues, and mentor junior engineers.