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Senior Software Engineer with 10+ years of experience building scalable backend systems, SaaS platforms, and distributed services. Expert in Go, Java, Python, and the MERN stack, with strong experience designing microservices architectures, REST APIs, and cloud-native infrastructure on AWS. Proven track record delivering secure, high-performance production systems across SaaS, financial technology, and large-scale streaming platforms. Experienced in payment integrations, authentication systems (OAuth2, JWT), cloud infrastructure, and DevOps automation. Strong collaborator with experience mentoring engineers and delivering systems used by millions of users globally.…Senior Software Engineer with 10+ years of experience building scalable backend systems, SaaS platforms, and distributed services. Expert in Go, Java, Python, and the MERN stack, with strong experience designing microservices architectures, REST APIs, and cloud-native infrastructure on AWS. Proven track record delivering secure, high-performance production systems across SaaS, financial technology, and large-scale streaming platforms. Experienced in payment integrations, authentication systems (OAuth2, JWT), cloud infrastructure, and DevOps automation. Strong collaborator with experience mentoring engineers and delivering systems used by millions of users globally.

Matthew Kornblatt

Back-End Developer, Front-End Developer, Web Developer, +2

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Senior Software Engineer with 10+ years of experience building scalable backend systems, SaaS platforms, and distributed services. Expert in Go, Java, Python, and the MERN stack, with strong experience designing microservices architectures, REST APIs, and cloud-native infrastructure on AWS. Proven track record delivering secure, high-performance production systems across SaaS, financial technology, and large-scale streaming platforms. Experienced in payment integrations, authentication systems (OAuth2, JWT), cloud infrastructure, and DevOps automation. Strong collaborator with experience mentoring engineers and delivering systems used by millions of users globally.…Senior Software Engineer with 10+ years of experience building scalable backend systems, SaaS platforms, and distributed services. Expert in Go, Java, Python, and the MERN stack, with strong experience designing microservices architectures, REST APIs, and cloud-native infrastructure on AWS. Proven track record delivering secure, high-performance production systems across SaaS, financial technology, and large-scale streaming platforms. Experienced in payment integrations, authentication systems (OAuth2, JWT), cloud infrastructure, and DevOps automation. Strong collaborator with experience mentoring engineers and delivering systems used by millions of users globally.

Available to hire

Senior Software Engineer with 10+ years of experience building scalable backend systems, SaaS platforms, and distributed services. Expert in Go, Java, Python, and the MERN stack, with strong experience designing microservices architectures, REST APIs, and cloud-native infrastructure on AWS. Proven track record delivering secure, high-performance production systems across SaaS, financial technology, and large-scale streaming platforms.

Experienced in payment integrations, authentication systems (OAuth2, JWT), cloud infrastructure, and DevOps automation. Strong collaborator with experience mentoring engineers and delivering systems used by millions of users globally.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Senior Software Engineer at HubSign

November 1, 2024 - Present

Lead engineer for development of a SaaS e-signature platform supporting secure document uploads and digital signing workflows. Built backend services using Go, Python, and Node.js, with React and Next.js powering the web application. Designed and implemented RESTful APIs and webhook processing systems for document lifecycle events and subscription management. Integrated Stripe billing, Mailgun email automation, and HubSpot CRM to automate payments, notifications, and customer workflows. Implemented secure authentication using OAuth2 and JWT for user access control and API security. Managed AWS infrastructure, including S3 storage, containerized services, CI/CD pipelines, and deployment automation. Mentored 3 junior engineers, improving development practices, documentation, and code quality.

Senior Software Engineer at Western Union

May 1, 2019 - October 1, 2024

Developed high-volume financial transaction systems supporting global payment processing infrastructure. Built scalable backend services using Go, Java, and Python for transaction processing and enterprise integrations. Designed and implemented REST APIs and internal microservices for financial workflows and payment operations. Improved system performance by optimizing backend architecture, database queries, and application logic in high-traffic environments. Contributed to secure payment infrastructure meeting enterprise security and financial compliance requirements. Participated in architecture discussions, code reviews, and system documentation across multiple engineering teams.

Senior Software Engineer at Netflix

February 1, 2014 - April 1, 2019

Built distributed backend services supporting streaming infrastructure and content metadata systems. Developed scalable services capable of handling millions of concurrent users globally. Optimized backend APIs and service architecture to reduce latency and improve reliability. Contributed to platform infrastructure supporting content delivery and internal service integrations. Collaborated with cross-functional engineering teams to ensure system scalability, fault tolerance, and operational stability.