Top Software Engineer Jobs in Buffalo, NY

Design, build, test, and maintain scalable software systems. Collaborate with cross-functional teams, participate in code reviews, write tests and documentation, troubleshoot production issues, and contribute to product and architecture decisions.

Design, build, test, and document client-side networking software for Tailscale's dataplane. Improve connectivity between clients, subnet routers, and exit nodes, optimize performance and reliability, resolve complex customer network escalations, collaborate with product and engineering, and engage with the open-source community.

Build and operate scalable Kubernetes (EKS) infrastructure, develop Terraform infrastructure-as-code, maintain internal developer platform and tooling, support automation, security, and performance, and participate in 24x7 on-call rotations and incident escalation.

The Senior Fullstack Software Engineer will design, implement, and maintain features for Conveyor's SaaS platform, involving both backend and frontend work, while collaborating closely with team members and mentoring juniors.

Drive the Continuous Integration team, ensuring build systems' reliability and scalability, and mentor CI engineers while improving developer productivity through automation and tooling.

The Senior Software Engineer at Order.co designs complex features end-to-end, mentors junior engineers, and participates in design reviews while ensuring quality and reliability of systems.

The Senior Software Engineer will design and develop scalable applications, enhance DevOps practices, and drive continuous improvement within infrastructure and systems.

The Senior Software Engineer will design, develop, and optimize scalable PHP APIs and web applications, collaborating with product and design teams to support product development and implement best coding practices.

Senior Software Engineer responsible for developing and maintaining web applications and microservices (React, Golang). Mentor team members, lead code reviews, influence technical decisions, improve CI/CD and testing strategies (unit, E2E, performance), collaborate across teams on integrations, and promote engineering best practices and documentation.

Build and own end-to-end full-stack systems for AI-powered agentic trading across web and React Native mobile. Implement real-time, low-latency UIs and Go backend services, integrate streaming AI/ML features and market data, drive architecture and code quality, and collaborate with AI/ML, design, and product teams to ship production-ready features used by millions.

Develop secure, data-rich frontend features using React and TypeScript for a DoD mission-planning platform. Integrate UIs with backend APIs, support map-based and AI-enabled decision-support workflows, write unit/integration tests, participate in code reviews and security remediation, and collaborate with cross-functional teams with periodic onsite sprint planning in Laurel, MD.

As a Senior Software Engineer, you'll implement collaboration features, support team architecture, work across tech stacks, and improve developer experience.

The Staff Software Engineer will lead full-stack initiatives, improve system quality, drive technical direction, and mentor peers in a collaborative environment.

As a Software Engineer - Backend, you will develop products and manage engineering infrastructure, focusing on system design, security, and code quality.

Build, test, and integrate secure backend services and APIs for DoD mission-planning. Work on REST and gRPC services, asynchronous workflows, geospatial databases, containerized deployments, CI/CD, automated tests, and vulnerability remediation while collaborating with AI/ML, frontend, and cybersecurity teams.

As a Full Stack Software Engineer, you will lead product features from design to implementation while mentoring other engineers in AI-native workflows. Responsibilities include building scalable backend systems, creating responsive UIs, and driving architectural decisions in a high-urgency environment.

As a Software Engineer at Canonical, you will design, build, and ship software, improve packaging and distribution processes, and mentor colleagues while contributing to open source projects.

The Junior Ubuntu Software Engineer will design, build, and ship software, focusing on quality and resilience, while engaging with the open source community.

We are seeking 2025 and 2026 Graduate Software Engineers to join Canonical's teams focused on open source software. Responsibilities include product roadmapping, coding in various languages, engaging with the community, and ensuring high-quality performance. Candidates should have an exceptional academic track record and experience with Linux.

The role involves building and managing scalable distributed systems for Twilio's email platform, mentoring junior members, and improving system performance and security.

The role involves designing, building, and optimizing a data platform, collaborating with cross-functional teams, and ensuring data quality and security.

As a Fullstack Software Engineer, you'll design, build and own the onboarding experience for Twilio's Stytch identity product, creating secure integration solutions for developers and enhancing customer authentication.

As a Software Engineer, you will develop and maintain Python and C# API services, mentor junior developers, and collaborate in Agile teams to deliver software solutions in healthcare communication.

Design, develop, and maintain Java-based backend services and APIs for KeeperApp. Own backend components, optimize MySQL schemas/queries, ensure performance and reliability, apply secure coding practices, participate in code reviews, and collaborate with product and engineering teams to deliver features iteratively.

Design, build, and maintain scalable React/TypeScript web applications for Keeper's Admin Console. Integrate with backend REST APIs, implement enterprise UI workflows (RBAC, policy config, audit views), ensure secure, well-tested frontend code, participate in architecture and code reviews, troubleshoot performance and usability, and maintain documentation.