Sina Shadbad
Senior Software Engineer @Appsfactory
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WORK HISTORY
Senior Software Engineer @Appsfactory
Munich, DE
Designed and implemented scalable microservices and serverless full-stack architectures (Angular + NgRx, React + Redux, Node.js + Express.js, Redis, SQL/No-SQL) on GCP and AWS across multiple projects, optimizing performance to achieve an average of ~35% throughput gain with zero additional infrastructure costs. Rescued 2 failing client projects (Angular + NgRx, Node.js + Express.js, MS-SQL Server, Azure) by leading large-scale refactoring, optimizing critical paths for ~40% faster load times, and mentoring junior developers on clean-code practices, resulting in on-time delivery and an increase in client NPS from 30 to 80. Improved frontend (Angular, React, Next.js) performance by replacing unnecessary third-party libraries with custom-built solutions tailored to project needs, cutting bloat and improving maintainability; reduced API calls by ~40% through smart caching and lazy-loaded non-critical scripts, resulting in ~50% faster load times and Lighthouse scores above 90. Led backend optimization by architecting stateless APIs (Node.js), implementing Redis caching, and tuning SQL/MongoDB queries—cutting latency by ~60% and cloud costs by ~25%. Upskilled 5+ engineers in SOLID/DRY principles and modular design, fostering a culture of ownership, cutting regression bugs by ~40%, and onboarding time from 6 to 2 weeks through paired programming and better docs. Embedded tech debt prevention into sprints via weekly ‘Tech Deep Dive’ sessions and lightweight RFCs, reducing post-launch hotfixes by ~50%. Restored key client trust through a technical turnaround (legacy refactor, cloud optimization, transparent updates)—delivered stalled project on time, securing 4+ follow-up contracts. Aligned 3+ cross-functional teams (design, backend, DevOps) on microservices development—translating technical constraints into clear milestones to deliver on time with zero critical bugs.
EDUCATION
Islamic Azad University
Bachelor of Applied Science (B.A.Sc.), Mathematics and Computer Science
ABOUT SINA SHADBAD
TL;DR – What I Do and What I Care About A Senior Technical Lead & Software Engineer…
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