Summary
Overview
Work History
Education
Skills
Porjects
Timeline
Generic

DOR OZERY

Backend Engineer
Tel Aviv

Summary

Experienced Backend Engineer specializing in microservices and monolith architectures, proficient in Java and the Spring Framework. Former Tech Lead known for system design, backend optimization, and fostering cross-team collaboration. Skilled in Docker, OpenSearch, CI/CD, and mentoring junior developers. Recognized for clear communication, ownership mindset, and adept technical problem-solving. Actively expanding language proficiency by building backend tools in Go to deepen systems knowledge. Holds a B.Sc. in Computer Science with honors.

Overview

3
3
years of professional experience
3
3
years of post-secondary education
2
2
Languages

Work History

Tech Lead - Backend

Bottomline Technologies
07.2022 - 10.2023
  • Led a team of 2 developers and 1 QA, while remaining hands-on with core backend development.
  • Managed full feature lifecycles including requirement gathering, solution design, task breakdown, code reviews, and delivery.
  • Mentored junior developers through onboarding and ongoing technical guidance.
  • Led a full REST API infrastructure overhaul to improve modularity, reusability, and long-term maintainability.

Software Engineer - Backend

Bottomline Technologies
08.2021 - 10.2024
  • Led a major architectural refactor of the multi-tenant infrastructure, enabling the system to scale from hundreds to thousands of tenants. Improved system reliability and drastically reduced load time, resolving critical performance issues.
  • Developed and integrated a fraud detection algorithm into the existing rule engine to identify impersonation attacks, where fraudsters redirected transactions by posing as legitimate individuals or entities. Leveraged fuzzy string matching techniques and OpenSearch to detect suspicious identity overlaps.
  • Optimized how the system indexed documents into OpenSearch, resulting in a significant performance improvement, by refining data handling and leveraging VisualVM for JVM profiling.
  • Built and deployed Spring Boot microservices using Docker, integrated into CI/CD workflows with Jenkins.

Education

B.Sc. - Computer Science

Holon Institute of Technology (H.I.T)
01.2017 - 01.2020

Skills

Java

Porjects

  • Redis-Compatible Server - Personal Project (In Progress) Building a Redis-compatible server in Go with in-memory key-value storage, custom RESP protocol handling, and RDB-based persistence. The project explores low-level system design, networking, and concurrency in Go. Tech Stack: Go
  • Go HTTP Server - Personal Project (In Progress) Building a lightweight HTTP server in Go to deepen understanding of concurrency, networking, and Go's standard library. Tech Stack: Go
  • Lyrical - Personal Project Developed a personal app which syncs with the Spotify player and a third-party API to display romanized lyrics. Tech Stack: Spring Boot, Kotlin, Android, Keycloak

Timeline

Tech Lead - Backend

Bottomline Technologies
07.2022 - 10.2023

Software Engineer - Backend

Bottomline Technologies
08.2021 - 10.2024

B.Sc. - Computer Science

Holon Institute of Technology (H.I.T)
01.2017 - 01.2020

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DOR OZERYBackend Engineer