Top Senior Software Engineer Jobs in Buffalo, NY

As a Senior Frontend Software Engineer, you'll develop user-facing features using React and TypeScript, ensuring performance and cross-device compatibility while collaborating with teams to maintain a component library.

As a Senior Mobile Engineer, you will develop high-performance mobile features using React Native and TypeScript, collaborating closely with designers and engineers to enhance user experiences.

The Software Engineer will manage data collection, optimize cloud infrastructure for data ingestion, and collaborate with AI researchers to enhance datasets for model training.

Pipeline for software engineering roles at multiple levels. Work may include design, development, testing of embedded or application software, firmware and hardware-software integration, code review, debugging, performance optimization, Agile/Scrum practices, and cross-functional collaboration with systems, controls, and hardware teams.

Build and own backend, data architecture, and integrations for operations. Replace manual workflows with automations and AI agents, ship internal tools, ensure reliable data flows, monitoring, and documentation, and support production systems used by ops.

The Senior Back-End Software Engineer will design and implement a serverless platform, work closely with the product team, and own entire projects, driving innovation in telehealth.

Build and maintain scalable, cloud-native full‑stack features and services. Collaborate with Product and Design to prototype, deliver, and document solutions. Work across backend and frontend, apply modern engineering practices, mentor teammates, and own product domains to improve transit operations.

The Senior HPC Cluster Engineer will optimize GPU clusters, troubleshoot InfiniBand networks, integrate new hardware, enhance automation systems, and manage GPU devices in HPC environments.

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

Design, implement, and maintain backend services and core APIs (primarily Scala). Collaborate on architecture, improve system reliability, and deliver production software for legal AI products.

Lead design and implementation of the Libraries Platform: services, pipelines, and package index to build, verify, and serve secure reproducible libraries. Automate artifact creation, CVE remediation, SBOM/provenance generation, AI-assisted patching, and operate registry/mirroring, CI/CD integrations, reliability, observability, and incident response while mentoring engineers.

The Senior .NET Software Engineer will drive development of .NET software products, focusing on back-end engineering, code reviews, and collaborating with cross-functional teams.

Senior engineer responsible for designing, building, and operating scalable data ingestion, processing, storage, and member-facing membership application. Drive architecture decisions, mentor engineers, build data pipelines, APIs, and ensure reliability, observability, CI/CD, and documentation while partnering with product and analytics stakeholders.

As a Senior Full-Stack Engineer, design and build scalable UI systems, own features end-to-end, collaborate on API design, and ensure production quality.

Lead complex software projects, mentor engineers, and set technical direction at Vanta while contributing to security and compliance solutions.

Design, implement, and optimize high-performance backend systems in Rust for an xOT security platform. Participate across the development lifecycle—debugging, testing, and performance tuning—while integrating relational and NoSQL data stores, microservices, third-party devices, and AI tools. Provide technical leadership, code review feedback, and promote secure, reliable, observable distributed systems.

Design and develop backend services and APIs for identity resolution, optimize event-driven systems, and enhance system reliability. Mentor engineers and influence architectural decisions.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

Lead design and implementation of the PSA Liquidity Platform connecting buyers and sellers. Build buyer tooling, matching/ranking engines, and seller experiences. Architect and operate microservices and Kafka-driven systems on Kubernetes/AWS, instrument observability, apply AI tooling across the SDLC, and drive cross-functional delivery from 0-to-1 while owning end-to-end outcomes.

Lead backend and full-stack work on the Payments team, building multi-gateway integrations (Stripe, PayPal), payment APIs, and customer payment UIs. Ensure secure, compliant (PCI-DSS) payment flows, reliability, observability, and scalability across AWS/Kubernetes microservices. Partner cross-functionally to design architecture, implement settlement/reconciliation, and maintain high availability.

Serve as the technical IC leader for the Provider organization: set technical roadmap and engineering standards, design and review architectures, drive cross-team initiatives, mentor engineers, and deliver high-throughput, low-latency, cloud-based microservice systems for provider-focused products.

Build and scale full-stack systems to improve provider onboarding and supply; design distributed, maintainable services; lead high-priority projects; mentor engineers; integrate AI-assisted and LLM-based features; drive provider-facing product quality and reliability.

As a Senior Full Stack Software Engineer, you will build and improve products, create user interfaces and APIs, and collaborate with various teams to enhance the customer experience.

As a mid-level Software Engineer, you'll deliver Python-based platform features, collaborate with teams, and maintain system reliability and scalability.

Design, build, and operate high-scale distributed observability systems for telemetry ingestion, processing, storage, autoscaling, and service provisioning. Own platform reliability, performance, capacity, and cost efficiency; participate in on-call rotations and resolve incidents through root-cause fixes. Develop automation, identify architectural bottlenecks, contribute to technical roadmaps and design reviews, and collaborate with infrastructure, product, and engineering teams.