Navid Hassantabar Email and Phone Number
Navid Hassantabar personal email
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Staff Software Engineer with 11 years in the tech industry, specializing in scalable, high-performance systems. Experienced in backend development, DevOps practices, and designing distributed systems serving over 50 million users. Expertise in Agile leadership and overseeing the full software development lifecycle, from planning to maintenance. Seeking career opportunities that offer visa sponsorship.At Divar, the leading online marketplace platform in Iran with over 40 million monthly active users, I served as a Staff Software Engineer. I developed cloud-native applications within a Microservices architecture using Kubernetes, Go, Python, and Elixir. Additionally, I managed system ownership and on-call duties for over 30 systems, including a 20-node Cassandra cluster, a 12-node Elasticsearch cluster, and a 7TB PostgreSQL database. My significant achievements include redesigning backend services to implement concurrent programming, leading the transition of a legacy chat service to a new tech stack, and orchestrating a PostgreSQL benchmarking initiative that resulted in a 10x performance boost.In my role as Software Engineering Manager at Divar, I directed a multi-disciplinary team, scaling it from 5 to 12 members. I implemented Agile/Scrum methodologies, developed and managed OKRs for 4 quarters, and conducted one-on-one meetings for performance reviews and career planning. This role enhanced my leadership skills and provided valuable experience in team management and project coordination.Previously, at Sotoon, I powered infrastructure for Divar and Cafe Bazaar, supporting 50+ million monthly active users combined. I engineered data pipelines with Kafka, a 1-petabyte HDFS, and a data processing cluster using Spark and Yarn (500+ CPU cores, 4+ TB RAM).Technical Skills:* Databases: Administering relational, NoSQL, and distributed databases such as PostgreSQL, Cassandra, MongoDB, Elasticsearch, Redis, Kafka, and RabbitMQ.* Programming Languages & Frameworks: Proficient in Go, Python, Elixir, Django; experienced in Java and C++.* Programming Paradigms: Object-Oriented, Functional, Concurrent, Event-Driven, and Reactive (RxJava) Programming.* Architectures & API Design: Microservices Architecture, Distributed Systems, Cloud-Native Applications, Designing RESTful and gRPC-Protobuf APIs.* DevOps & Infrastructure: Kubernetes, Docker, Helm, CI/CD, Gradle, Make, Git, Ansible, Nomad, Vagrant, Nginx, Linux System Administration.* Monitoring & Logging: Grafana, Prometheus, Sentry.
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Staff Software Engineer | Backend Development, Microservices, Kubernetes, Go, PythonDivar Aug 2020 - PresentTehran, IranDivar is the leading online marketplace platform in Iran, serving 40+ million monthly active users.* Developed cloud-native applications within a Microservices architecture, utilizing Kubernetes, Go, Python, and Elixir.* Managed system ownership and on-call duties for over 30 systems, including a 20-node Cassandra cluster (2K writes/sec), a 12-node Elasticsearch (8K queries/sec), a 7TB PostgreSQL, and other databases and in-house solutions.* Orchestrated a PostgreSQL benchmarking and optimization initiative, analyzing diverse infrastructure setups. Achieved a 10x performance boost and facilitated migration for 15+ teams, establishing a new dedicated Database team.* Led the transition of a legacy Elixir/Cassandra chat service with 2.5 million daily users to Go/PostgreSQL, streamlining the tech stack and yielding 30% resource savings, with zero downtime despite the challenging database migration.* Built a Python library for UI element generation, adopted by 20+ teams across Divar, enhancing service integration and user interface consistency.* Redesigned backend services to implement concurrent programming using Python AsyncIO, Go goroutines, and gRPC Futures, improving response time by up to 4 times.* Authored and contributed to 50+ technical design documents and post-mortem analyses, mentored junior to mid-level developers, and conducted 150+ technical interviews; these roles spanned across positions within the Hezardastan Group. -
Software Engineering Manager | Agile/Scrum, Team Management, OkrsDivar Jun 2019 - Jul 2020Tehran, Iran* Directed a multi-disciplinary team, scaling it from 5 to 12 members, and implemented Agile/Scrum methodologies, adapting workflows and metrics to maintain consistent performance during the transition to remote work amid COVID-19.* Led the development and management of OKRs for 4 quarters, achieving at least 75% of objectives, and conducted regular one-on-one meetings for performance reviews and career planning, resulting in 4 internal promotions.* Coordinated an 8-week summer camp with seven team leaders, narrowing 100+ applicants to 40 through contests and interviews, and integrating 30 new hires via a structured program of classes and team projects.* As a Backend Developer, refactored a critical search service to reduce memory usage by 75% and enhanced response time by 33% through optimizing cache utilization, while fulfilling team leadership.
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Senior Data Infrastructure Engineer | Kafka, Hdfs, Spark, Yarn, Big DataSotoon Jun 2018 - May 2019Tehran, IranSotoon powered the infrastructure for Divar and Cafe Bazaar, with 50+ million monthly active users combined.* Engineered data pipelines with Kafka (120K messages/sec), a 1-petabyte HDFS, a data processing cluster using Spark and Yarn (500+ CPU cores, 4+ TB RAM), and a Zeppelin environment for 70+ users.* Administered a cluster of 30 bare-metal servers, utilizing Ansible, Nomad, and Vagrant, and created a custom Gradle plugin with Groovy, adopted in 10+ projects, to streamline deployment. -
Java Card DeveloperHasin Group Jan 2017 - May 2018 -
Android And Java DeveloperMyket Jul 2013 - May 2018Tehran, Iran* Played a key role in the startup's growth, contributing to a team that scaled to 50 members and achieved 3 million monthly active users, while gaining experience in organizational development.* Developed Android/Java libraries including a low-memory download manager that handles unstable networks, a client-side load balancer, and an error/log reporting tool, all still in use after 8 years across different apps.
Navid Hassantabar Skills
Navid Hassantabar Education Details
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Computer Software Engineering -
Computer Software Engineering
Frequently Asked Questions about Navid Hassantabar
What company does Navid Hassantabar work for?
Navid Hassantabar works for Divar
What is Navid Hassantabar's role at the current company?
Navid Hassantabar's current role is Staff Software Engineer | Go, Python, Java | Distributed Systems | Microservices | DevOps Practices.
What is Navid Hassantabar's email address?
Navid Hassantabar's email address is na****@****ail.com
What schools did Navid Hassantabar attend?
Navid Hassantabar attended Sharif University Of Technology, Shahid Beheshti University.
What skills is Navid Hassantabar known for?
Navid Hassantabar has skills like Functional Programming, Git, Subversion, Linux, Jquery, Site Reliability Engineering, Object Oriented Programming, Web Applications, Photoshop, Linux System Administration, Agile Methodologies, Android Development.
Who are Navid Hassantabar's colleagues?
Navid Hassantabar's colleagues are Hector Feliciano, Mohamadamin Karami, Alireza Hooshyar, Masoud Hashemian Adriani, Maede Ezatjalil, Afshin Zanganeh, Sahar Partovi.
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