Top Senior Software Engineer Jobs in Buffalo, NY

Design, develop, and test software applications while mentoring junior developers and collaborating with cross-functional teams. Analyze data, solve problems, and create user-friendly products with a focus on engineering excellence.

Lead architecture and ship complex full-stack features across the stack, mentor engineers, partner with Product and Clinical teams, reduce technical debt, and integrate AI tools to improve mental healthcare outcomes.

Architect, build, and scale full-stack applications and high-throughput backend services. Develop React/TypeScript frontends and Ruby on Rails/Java backends, design APIs and real-time microservices (dispatch/logistics focus), introduce automated testing and CI/CD, improve scalability and observability, support AI initiatives, and mentor engineers while collaborating with product and UX teams.

The Senior Software Engineer will design and deliver high-performance integration systems, manage end-to-end ownership of integrations, and ensure reliable compliance data flow across complex environments.

The Senior Software Engineer will lead projects, architect solutions, mentor junior staff, and work full stack on platform development.

As a Senior Software Engineer, you will architect and implement Python-based systems, lead feature design and delivery, ensure scalability and reliability, and mentor junior engineers.

As a Senior Software Engineer, you will lead frontend development, define architecture, optimize performance, and collaborate across teams to create user-friendly logistics applications.

The role involves end-to-end ownership of AWS infrastructure, managing Kubernetes platforms, and ensuring system reliability through observability and automation. Responsibilities include incident response and maintaining CI/CD systems.

As a Senior Backend Engineer at Socure, you'll develop scalable backend services for identity verification, optimize system performance, and collaborate with cross-functional teams on document processing integrations.

The Senior Software Engineer will enhance mobile Wikipedia experiences through web-first features, collaborate cross-functionally, and mentor team members while delivering API-driven solutions.

Design, develop, and deploy Salesforce solutions, including APIs, user interfaces, and data management, while supporting users and troubleshooting issues.

Build and ship full-stack features in weekly loops, owning problems end-to-end from stakeholder discovery to production, using TypeScript/Node backend and React/React Native frontends, leveraging AI-paired tools, and making scalable architectural decisions while collaborating with cross-functional teams.

As a Senior Software Engineer, you will design and build backend services for Postgres integration with ClickHouse, ensuring operational excellence and contributing to automation and tooling for database management.

Design, build, and maintain Kotlin APIs; optimize distributed pacing and ad delivery systems; mentor teams and ensure engineering quality; collaborate on scalable solutions.

Responsible for designing, building, and operating AI-powered features, scalable APIs, and maintaining integrations within ClickHouse's AI/ML ecosystem.

The Sr Software Engineer I will enhance the affiliate link optimization platform, develop distributed systems, ensure high code quality, and collaborate across teams to drive innovative solutions in a fast-paced environment.

The Software Support Engineer III provides technical assistance for operational support, troubleshoots issues, writes cloud manifests, and documents solutions for future reference.

The Senior Software Engineer will design and build backend services, collaborate with teams, and ensure secure coding practices in a remote role.

Lead design, develop, test, and deploy large-scale software systems. Collaborate with product, design, and engineering teams; write scalable TypeScript/Node.js code; resolve defects and performance issues; perform code reviews; mentor engineers; improve CI/CD and IaC processes; and stay current on technologies.

As a Senior Software Engineer, you will develop and optimize high-performance APIs, ensuring reliable, low-latency access to user data and collaborating closely with various teams on essential API infrastructure.

As a Principal Software Dev Engineer, lead full-stack engineering, oversee complex initiatives, mentor engineers, and align technical strategies with business goals to enhance content management systems.

As a Principal/Staff Software Engineer, you will design, implement, and lead embedded software for Optical DCI transport systems, ensuring performance and reliability.

Design, build, and maintain scalable full‑stack systems and APIs. Extend products to handle large datasets, reporting, and third‑party/Microsoft Graph integrations. Write secure, testable production code, participate in code reviews, troubleshoot performance issues, and mentor engineers. Own features end‑to‑end from design through deployment using CI/CD and DevOps practices in a distributed team.

Lead design and implementation of Pinterest Edge systems (CDN, TLS, DNS, proxies) to manage automation traffic and rate limiting at scale. Develop request-processing logic in Envoy, collaborate with vendors and platform teams, mentor engineers, use AI to accelerate workflows, and participate in on-call incident response and reliability improvements.

Lead design and implementation of scalable backend solutions, collaborate on requirements and specs, troubleshoot complex technical issues, conduct and lead code reviews, ensure rigorous automated testing, leverage AI tools to improve workflows, and support high-volume transactional processing.