Senior Software Engineer - Microservices & Fullstack Expert

KALKIDAN DERSO DEMISSE

Addis Ababa, Ethiopia • *************@*****.*** • +251*********

LinkedIn: linkedin.com/in/kalkidan-derso-6b7a3a226 SUMMARY

Senior Software Engineer (5+ years) specializing in building scalable microservices, high-performance APIs, and fullstack applications using Node.js, Python, Java, React, and AWS/GCP. Strong track record delivering enterprise SaaS, multi-tenant platforms, ERP systems, and real-time applications used by thousands of users. Skilled in system design, cloud infrastructure, DevOps automation, and performance optimization.

EXPERIENCE

Fullstack Developer — Chora (USA) Contract (Oct 2024 – Present)

• Developing advanced web automation pipelines reducing manual processes by 80% for enterprise workflows.

• Customizing Guacamole (C, Java Servlet) with enhanced authentication and security.

• Building multi-stage automation workflows focused on scalability and performance. Senior Software Engineer — Hibir Technologies Contract (Jul 2024 – Oct 2024)

• Architected multi-tenant workforce scheduling platform (22+ tenants).

• Built Next.js 15, React 19 frontend with real-time drag and drop scheduling.

• Django REST backend with Celery, Redis, WebSockets; reduced scheduling workload by 85%. Senior Backend Engineer — Client (NDA) Contract (Aug 2024 – Oct 2024)

• Built real-time roadside assistance platform using Flask, Firestore, Cloud Run.

• Implemented geolocation-based provider matching & real-time communication.

• Integrated JWT, OAuth2, OTP, RBAC authentication. Fullstack Developer (MERN) — Blueclerk (Texas, USA) Contract (Jan 2024 – Jul 2024)

• Built cloud asset management platform with IoT integration.

• High-throughput Node.js backend with MongoDB + Redis.

• Automated AWS/Docker deployments improving efficiency by 70%. Lead Fullstack Developer — eTech S.C. (Oct 2022 – Aug 2024)

• Led development of full ERP (Finance, HR, Fleet, Inventory, Sales, Purchase).

• Spring Boot microservices with Redis, OAuth2, API Gateway.

• Angular frontend with GPS tracking & real-time fleet monitoring.

• Created CI/CD pipelines achieving 99.9% uptime.

Backend Developer — Synque Limited (Hong Kong) (Sep 2023 – Jun 2024)

• Built backend APIs for e-commerce platform processing millions of transactions.

• Reduced API latency by 60% through caching & query optimization. Fullstack Developer — Nicomas Digitals (Jan 2021 – Feb 2022)

• Built e-commerce platform using Next.js, Tailwind, Express.js.

• Integrated Sanity CMS & secure payment flows.

EDUCATION

B.Sc. in Software Engineering — Addis Ababa Science and Technology University (2021) SKILLS

Languages: JavaScript, TypeScript, Python, Java, C Frontend: React, Next.js, Angular, React Native

Backend: Node.js, Django, Flask, Spring Boot, Express.js Databases: PostgreSQL, MongoDB, MySQL, SQLite, Firestore Cloud & DevOps: AWS, GCP, Firebase, Docker, GitLab CI/CD, Redis, Kafka Architecture: Microservices, SaaS, Real-time Systems, WebSockets, OAuth2/JWT, Payments, GPS/Geolocation

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