Top Software Engineer Jobs in Buffalo, NY

As a Senior Software Engineer, you will develop key product features for millions of users, collaborate with teams, and mentor others.

Lead development of AI-powered full-stack applications, mentor engineers, define technical direction, build performant front-end and scalable backend services, integrate LLMs/RAG, and establish engineering best practices for production AI workflows.

Design, build, and operate large-scale distributed web-crawling and data ingestion systems. Improve throughput, reliability, observability, and data quality. Develop backend services for job orchestration and asynchronous workloads, partner with product teams to create data products, and mentor teammates on domain-specific acquisition techniques.

Build and iterate growth experiments, onboarding flows, promotions, and re-engagement campaigns. Design and integrate services/APIs and cloud infrastructure, instrument and analyze product data, apply AI where useful, improve system reliability, and mentor peers to drive activation, engagement, retention, and monetization.

Design, build, test, and deploy secure mission-planning software. Maintain secure CI/CD, containerized deployments, automated testing, and security-scanning workflows. Integrate AI capabilities, investigate vulnerabilities, support remediation, produce technical design documentation, and collaborate with stakeholders and customer leads.

Build and optimize high-volume web applications using .NET, Node, React and AWS; maintain and improve existing systems; troubleshoot bugs; perform code reviews; mentor junior engineers; participate in on-call rotation; and improve scalability and performance.

The Principal Software Engineer will lead the design and build-out of an AI Context Layer, ensuring high-quality data for AI systems, while managing access control and developer interfaces, and leading cross-team projects.

The staff software engineer will lead technical design, develop AWS microservices and automation solutions, and mentor team members.

Lead design and implementation of health data products, mentor engineers, own multiple projects, and develop scalable data solutions using modern technologies.

The Senior Software Engineer will lead development, mentor engineers, and create data solutions using TypeScript, React, and Python. Responsibilities include designing applications, driving innovation, and ensuring high-quality user experiences.

Lead design and implementation of products, mentor engineers, drive innovation, and build scalable data solutions using modern tech stack.

As a Senior/Staff Software Engineer, you will design and implement products, guide other engineers, and drive innovation in health data solutions.

Design, implement, and operate scalable, fault-tolerant web crawling and extraction pipelines processing massive web data. Write production Java/Python code, build ETL/ELT pipelines (BigQuery/Snowflake), use Kafka, Kubernetes (GKE/EKS), Terraform, and Airflow, and improve observability, reliability, and collaboration with product and data science teams.

Design, implement, and maintain automated and manual tests across unit, component, integration, and end-to-end levels. Build scalable test frameworks, automate UI and API tests, run performance/load tests, produce test reports, report regressions, and collaborate with agile teams to influence design and ensure product testability and scalability.

Build and maintain high-performance Ruby on Rails services on a Rails/AWS/Kubernetes stack. Own end-to-end feature development, optimize DB queries and APIs, support legacy modernization and new product growth, participate in on-call rotation, and drive CI/CD, testing, and architectural improvements.

Lead design and rewrite of cloud-native core systems. Build scalable back-end services and front-end features, drive architecture and testing discussions, mentor engineers, and improve telemetry, performance, and reliability.

Design, build, and operate scalable web applications, APIs, services, and AI-enabled workflows. Use AI tools across the development lifecycle, ensure reliability, performance, and observability, contribute to technical decisions, iterate from user feedback, and own production quality and delivery as part of cross-functional squads.

Senior Software Engineer at Twilio will design, build, and maintain scalable communication systems, collaborate with cross-functional teams, mentor engineers, and contribute to architecture and delivery. Responsibilities include writing high-quality code, improving performance and reliability, shipping product features, and participating in technical planning within a remote-first, inclusive environment.

Lead design, develop, and deliver enterprise ServiceNow solutions including Service Catalog, Flow Designer workflows, approvals, SLAs, task orchestration, and integrations. Act as technical lead, establish standards and CI/CD practices, mentor developers, conduct code/design reviews, and ensure alignment with governance, security, and enterprise architecture while driving platform scalability and performance monitoring.

Design, implement, and own production platform subsystems for an enterprise AI control plane. Deliver production-ready Go services on Kubernetes, ensure reliability, observability, and scalability, mentor engineers, drive design docs and code quality, and contribute to the open-source ToolHive/MCP ecosystem.

Lead Platform Engineer to design and evolve Subaru.com using Java, AEM, and AWS. Lead architecture and technical delivery, mentor teams, run design and code reviews, enforce quality, and build scalable web applications and services integrating front-end, mobile, and third-party clients.

Design, develop, and optimize SuiteCommerce solutions and SCA extensions for financial services. Build SSP applications and backend logic with SuiteScript, JavaScript, HTML/CSS, Backbone.js. Integrate third-party systems via REST/SOAP, maintain payment gateway and compliance integrations, and collaborate with teams to enhance eCommerce and client portal capabilities while tracking NetSuite updates.

Develop and maintain embedded firmware and kernel/user-mode device drivers for Ethernet-based networking devices. Design, implement, test, and integrate drivers into a Linux and AUTOSAR communication stack, build SDK components, and create debug/test utilities and automated unit/system tests for safety-critical automotive applications.

Design, build, and support scalable, stable web and mobile digital products. Communicate with stakeholders, estimate scope, lead and mentor engineers, produce extensible technical solutions, and use data-driven iterative development.

Lead engineering and develop API-focused full‑stack solutions for brokerage products. Design scalable architectures, build secure cloud-native applications (AWS), drive API strategy, implement CI/CD and DevOps practices, mentor team members, and ensure code quality via TDD/BDD and security/static analysis tools.