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I am a Senior Software Engineer specializing in mobile, microservices, and cloud infrastructure. I build end-to-end mobile and cloud-native solutions, modernize legacy platforms, and design secure, scalable microservices for enterprise systems. I thrive on solving complex issues and driving quality through automation. My strengths include full-stack solution ownership, DevOps and cloud infrastructure, system architecture, root cause analysis, and building scalable distributed systems. I focus on problem resolution, code quality, and automation to improve reliability and developer velocity.…I am a Senior Software Engineer specializing in mobile, microservices, and cloud infrastructure. I build end-to-end mobile and cloud-native solutions, modernize legacy platforms, and design secure, scalable microservices for enterprise systems. I thrive on solving complex issues and driving quality through automation. My strengths include full-stack solution ownership, DevOps and cloud infrastructure, system architecture, root cause analysis, and building scalable distributed systems. I focus on problem resolution, code quality, and automation to improve reliability and developer velocity.

Andriy Semenyuk

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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I am a Senior Software Engineer specializing in mobile, microservices, and cloud infrastructure. I build end-to-end mobile and cloud-native solutions, modernize legacy platforms, and design secure, scalable microservices for enterprise systems. I thrive on solving complex issues and driving quality through automation. My strengths include full-stack solution ownership, DevOps and cloud infrastructure, system architecture, root cause analysis, and building scalable distributed systems. I focus on problem resolution, code quality, and automation to improve reliability and developer velocity.…I am a Senior Software Engineer specializing in mobile, microservices, and cloud infrastructure. I build end-to-end mobile and cloud-native solutions, modernize legacy platforms, and design secure, scalable microservices for enterprise systems. I thrive on solving complex issues and driving quality through automation. My strengths include full-stack solution ownership, DevOps and cloud infrastructure, system architecture, root cause analysis, and building scalable distributed systems. I focus on problem resolution, code quality, and automation to improve reliability and developer velocity.

Available to hire

I am a Senior Software Engineer specializing in mobile, microservices, and cloud infrastructure. I build end-to-end mobile and cloud-native solutions, modernize legacy platforms, and design secure, scalable microservices for enterprise systems. I thrive on solving complex issues and driving quality through automation.

My strengths include full-stack solution ownership, DevOps and cloud infrastructure, system architecture, root cause analysis, and building scalable distributed systems. I focus on problem resolution, code quality, and automation to improve reliability and developer velocity.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer, Full-Stack at IBM

January 1, 2018 - January 1, 2025

Contributed to production of React Native mobile platform and 3+ NodeJS microservices serving thousands of enterprise users. Managed architecture decisions, core features, security, platform reliability, and resolution of critical customer defects. Architected and implemented bidirectional integration, extending the push notification microservice with RESTful API handler and reimplemented legacy SOAP Java Web Service, enabling push notification support for classic reports during legacy mobile app sunset. Led proof-of-concept validating migration feasibility, productized classic report rendering in modern mobile client, and retired legacy mobile application, reducing mobile code complexity, maintenance overhead, and improving cross-platform consistency. Designed and implemented distributed rate limiting using Redis across multiple service replicas, replacing ineffective in-memory counters and ensuring consistent enforcement of rate limits in scaled Kubernetes environment. Achieved zero

Software Engineer, IBM Cognos BI, Level 3 Support, Escalation Engineering at IBM

January 1, 2007 - January 1, 2018

Production Escalation and Critical Defect Resolution. Owned and resolved Sev-1 and customer-critical production defects across the Cognos BI platform, restoring service, improving stability, and maintaining customer satisfaction. Performed deep-dive RCAs using SDKs, native debuggers, log analysis, and performance profiling; delivered durable fixes and production-safe workarounds. Collaborated with development and support teams to identify systemic issues, streamline release and patch cycles, and provided 24/7 emergency on-call support for hot-site environments.