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About

7 years building backend systems, 3 years securing networks before that.

I build backend and distributed systems where correctness, security and uptime directly affect customer money. I work closest to the parts of a system where mistakes are expensive: authentication, money movement, custody, concurrency, distributed state and failure handling.

Most recently, as Technical Lead at Dana Blockchain Solutions, I led a ten-person engineering team from an empty repository to three production financial platforms handling live customer assets. I owned the architecture, built several of the highest-risk backend services and ran infrastructure and production delivery end to end. A second product later launched on the same exchange core with only its own business logic and client surface added.

Before that I spent three years at Part Software Group, where I designed the company-wide API gateway, worked as backend engineer and architect on Shahab, an AI cloud platform, conducted more than 250 technical interviews and taught backend development to around a hundred engineers.

Alongside full-time roles I ship products independently across telecom, logistics, e-commerce, payments and AI. In 2026 I co-founded FitYar, an AI fitness and nutrition coaching app, where I integrated GPT models into the product while keeping the core tracking and execution system independent of the AI layer.

Three years in network security before returning to software engineering still shape how I approach custody, secrets management, threat modelling and production boundaries.

Mohammad Zafardoost, a studio portrait in a black turtleneck against a dark background.
Mohammad ZafardoostSenior Backend Engineer
Based in
Muscat, OmanUTC+4
Availability
Open to senior backend and distributed-systems roles, remote or on-site.
Languages
English · Professional working proficiency

Scale

5 figures

The figures behind the systems.

Throughput and reach in production, and what it took to deliver them. Every number names the record it comes from.
~25M
mainnet transactions monitored per dayBitBaax multi-chain deposit and withdrawal infrastructure
40,000 TPS
load-tested throughput of the transaction ingestion and validation pipelineBitBaax internal load testing
40% → 15%
CI failure rate across 950 pipeline runsDana Blockchain Solutions delivery pipeline on GitLab CI
~50
design documents produced in a two-month architecture and R&D phaseBitBaax, before the twelve-month build
1M+
active users of the app whose payment and subscription layer I builtStoryFont

Experience

6 roles

Every role, most recent first.

Highlights are the things I owned and can be asked about in detail.

  • Oct 2019 – Present7 yrs

    Independent Full-Stack Engineer

    Self-employed

    Ships production platforms end to end as the sole engineer, alongside full-time roles.

    self-employed · remote

    • Delivered platforms across fintech, logistics, telecom and e-commerce: a digital goods marketplace with automated fulfillment, an international freight and customs platform, a fiber-optic subscription system for a telecom operator, and the payment and subscription layer behind a mobile app with more than a million active users.
    • Owns architecture, backend, frontend, infrastructure, deployment and long-term maintenance as the sole engineer on each system.
    • Co-founded and launched FitYar, an AI fitness coaching app built on GPT models — conversational program generation, calorie and macro tracking and a 400+ exercise library — owning backend, infrastructure and AI integration alongside one frontend engineer.
    • Builds Node.js and TypeScript backends with modular, service-oriented architectures; owns data modelling, API design and third-party integrations.
    • Runs the operational layer: containerized environments, CI/CD pipelines, network and TLS hardening, secrets management and monitoring.
    • Maintains and extends delivered systems years after launch without rewrites or regressions.
    • Node.js
    • React
    • Next.js
    • DevOps
    • MongoDB
    • Redis
    • PostgreSQL
    • Full-Stack Development
    • AI Pair Programming
    • RabbitMQ
    • Docker
    • Kubernetes

  • Jun 2024 – Aug 20262 yrs 3 mos

    Technical Lead

    Dana Blockchain Solutions

    Most senior technical role, reporting to the CEO; owned architecture, delivery and infrastructure for three fintech platforms built from zero.

    full-time · on-site

    • Owned architecture, delivery and infrastructure for three production fintech platforms built from zero — BitBaax (crypto exchange), TetherBaax (Tether wallet and OTC) and Goldmim (physical and digital gold trading) — all handling live custody of customer assets.
    • Led a ten-person team across backend, frontend and QA: set technical direction, established architecture and engineering standards, reviewed high-risk designs and production changes, and owned infrastructure, CI/CD and production operations end to end.
    • Architected a modular backend on Clean Architecture and domain-driven design: about 26 domain-oriented modules over an event-driven layer (RabbitMQ, MQTT, WebSocket), backed by replicated MongoDB and Redis, built as a reusable exchange core. TetherBaax launched on it with only its own business logic and client surface added.
    • Personally built the highest-risk services: authentication, trade engine, wallet management, treasury, asset management and blockchain interaction.
    • Built multi-chain deposit and withdrawal infrastructure across Ethereum, BSC, Bitcoin and Tron, monitoring about 25 million mainnet transactions a day; load-tested the internal ingestion and validation pipeline at 40,000 TPS.
    • Designed the custody security model: segregated hot and cold wallets, multi-sig Safe contracts, HashiCorp Vault, and protection against double-spend and chain reorganizations.
    • Built and operated the delivery pipeline (GitLab CI: lint, unit, end-to-end, security scanning, deploy), cutting the failure rate from about 40% to 15% across 950 runs.
    • Node.js
    • TypeScript
    • Event-Driven
    • RabbitMQ
    • MongoDB
    • PostgreSQL
    • Redis
    • WebSocket
    • React
    • Next.js
    • MQTT
    • Docker

  • Jun 2021 – Jun 20243 yrs 1 mo

    Senior Backend Engineer

    Part Software Group

    Designed the company-wide API gateway and served as backend engineer and architect on Shahab, an AI cloud platform.

    full-time · on-site

    • Designed and implemented the company-wide API gateway in pure Node.js — authorization, access control, rate limiting, caching and compression — with an extensible middleware layer that lets custom logic be injected anywhere in the request pipeline.
    • Served as backend engineer and software architect on Shahab, Part AI Research Center’s intelligent cloud-network platform, building the AI model marketplace, container management, wallet and payment services.
    • Conducted more than 250 technical interviews for backend and Node.js roles and worked with senior leadership to make technical assessment more consistent.
    • Taught backend development and Node.js to about 100 engineers across four cohorts at Part College — architecture, API design, databases and production practices. 25 graduates were hired into the company.
    • Node.js
    • PostgreSQL
    • Redis

  • May 2019 – Jun 20212 yrs 2 mos

    Backend Developer

    Zarban Information Technology Solutions

    Built backend systems for web and mobile products delivered to international clients, primarily in the Toronto market.

    full-time · remote · Richmond Hill, Ontario, Canada

    • Built backend systems for web and mobile products delivered to international clients, primarily in the Toronto market.
    • Designed data models and managed SQL and NoSQL databases across projects with varying scale and performance requirements.
    • Implemented real-time features with socket programming for live data and messaging flows.
    • Moved into a technical advisory role in the final months, coaching the in-house team on backend architecture, system design and delivery process.
    • Node.js
    • JavaScript
    • MongoDB
    • PostgreSQL
    • Redis
    • WebSocket

  • Nov 2020 – Mar 20215 mos

    Backend Developer

    i4Twins — Industry 4.0 Solutions

    Built backend microservices for a no-code IoT platform.

    part-time · remote

    • Built backend microservices for an IoT platform handling device connectivity, sensor data collection, aggregation and visualization.
    • Delivered authentication, authorization, user and device management, data aggregation, API control and repository management services in Node.js, MongoDB and Redis.
    • Carried the platform to about 90% completion before development was paused pending the company’s funding round.
    • Node.js
    • MongoDB
    • Redis
    • Docker
    • GraphQL

  • Feb 2016 – May 20193 yrs 4 mos

    IT Security Specialist

    Faragaman Saya Ertebat Novin

    Delivered network infrastructure and security projects for private-sector and government organizations.

    full-time · on-site

    • Delivered network infrastructure and security projects as a contractor for private-sector and government organizations: firewalls, IDS/IPS and endpoint protection across enterprise and industrial environments.
    • Worked with MikroTik, Fortinet and Kaspersky Anti Targeted Attack (KATA).
    • CCNA, Network+ and MCSA certified.
    • MikroTik
    • Fortinet
    • Kaspersky KATA
    • Linux

Teaching & hiring

Part Software Group, 2021 – 2024

Hiring loops and classrooms teach you what a team actually needs.

Running the backend hiring loop and teaching at Part College sit alongside the engineering work: both are about judging and growing engineers, which is most of what a technical lead does.

250+

technical interviews conducted for backend and Node.js roles

Part Software Group, 2021–2024

~100

engineers taught backend development across four cohorts

Part College, Part Software Group

25

course graduates hired into the company

Part College cohorts, Part Software Group

Security & credentials

7 credentials · 12 courses

3 years in network security still shape how I design custody and production boundaries.

Firewalls, intrusion detection and endpoint protection came before software engineering. The certifications below are from that period and from teaching since.

Education

  • Bachelor’s degree, Information Technology

    Kharazmi University · March 2022

Certifications

  • Certificate of Faculty Membership

    Part Software Group · October 2023 · Teaching

  • Kaspersky Lab Certified Consultant

    Kaspersky · Security

  • Kaspersky Anti Targeted Attack Platform

    Kaspersky · Security

  • Bitdefender Certified Technical Specialist

    Bitdefender · Security

  • Cisco Certified Network Associate (CCNA)

    Cisco · Networking

  • Microsoft Certified Solutions Associate (MCSA)

    Microsoft · Systems

12 completed courses — databases, backend, security
  • M001 — MongoDB BasicsMongoDB University
  • M103 — MongoDB Cluster AdministrationMongoDB University
  • M121 — MongoDB Aggregation FrameworkMongoDB University
  • M201 — MongoDB PerformanceMongoDB University
  • M320 — Data ModelingMongoDB University
  • Master NodeJS — MVC, REST APIs, GraphQL
  • JavaScript
  • C# Programming
  • Certified Ethical Hacker (CEH)
  • Kaspersky Anti Targeted Attack (KATA)Kaspersky
  • Cisco Certified Network Associate (CCNA)
  • Microsoft Certified Solutions Associate (MCSA)

Skills

9 groups

The toolbox, grouped by what it is for.

Depth is in Node.js, TypeScript and the data and messaging systems around them; the rest is what production fintech and platform work required.
Languages and runtimes
Node.js · TypeScript · JavaScript
Architecture
Distributed systems · Event-driven architecture · Domain-driven design · Clean Architecture · Microservices · Service-oriented architecture · API gateways · Software solution architecture
Data
PostgreSQL · MongoDB · MySQL · Redis · Database design · Replication · Sharding strategies · Object storage
Messaging and real-time
RabbitMQ · MQTT · WebSocket · GraphQL · REST API design
Fintech and blockchain
Payment systems · Trade engines and order books · Wallets, custody and treasury · Multi-chain deposits and withdrawals (Ethereum, BSC, Bitcoin, Tron) · Market making · Real-time market data · Web3
Infrastructure and delivery
Docker · Kubernetes · GitLab CI · Nginx · Linux · HashiCorp Vault · Infrastructure as a Service · CDN · Monitoring
AI engineering
LLM API integration · OpenAI API · Conversational AI · Prompt design · Structured outputs · Agentic AI development
Security
Network security · Threat modelling · Firewalls, IDS/IPS · Endpoint protection · Secrets management · Custody security models
Leadership and practice
Technology leadership · Technical staff management · Code review · Technical interviewing · Teaching and mentoring · Scrum and agile delivery · Unit and performance testing

Quick answers

8 questions

The questions that come up most.

What do you do?
I am Mohammad Zafardoost, a senior backend engineer based in Muscat, Oman. I build distributed and financial systems — exchanges, wallets, custody, payments and platform infrastructure — in Node.js and TypeScript, and I have led engineering teams as a Technical Lead.
What was your most recent role?
From June 2024 to August 2026 I was Technical Lead at Dana Blockchain Solutions, where I led a ten-person team and owned the architecture, delivery and infrastructure of three fintech platforms — BitBaax, TetherBaax and Goldmim — all handling live custody of customer assets.
Which technologies do you work with?
Node.js and TypeScript on the backend; PostgreSQL, MongoDB and Redis for data; RabbitMQ, MQTT and WebSocket for messaging and real-time systems; Docker, Kubernetes and GitLab CI for delivery. I also integrate LLM APIs in production products.
What kind of systems have you built?
Fifteen production systems across fintech and blockchain, AI products, commerce and payments, logistics, telecom, IoT and platform infrastructure — from a centralized crypto exchange and a gold trading platform to a company-wide API gateway and an AI fitness coach.
Do you have experience leading teams and hiring?
Yes. I led a ten-person engineering team at Dana Blockchain Solutions, conducted more than 250 technical interviews at Part Software Group, and taught backend development to around 100 engineers across four cohorts, 25 of whom were hired into the company.
What is your background in security?
Before software engineering I spent three years, from 2016 to 2019, as an IT security specialist delivering network infrastructure and security projects — firewalls, IDS/IPS and endpoint protection — and I hold CCNA, MCSA and Kaspersky certifications. That background shapes how I design custody, secrets management and production boundaries.
Are you open to new roles?
Yes. I am open to senior backend and distributed-systems roles, remote or on-site. The fastest way to reach me is by email at [email protected] or [email protected], or on WhatsApp and Telegram at +968 9792 1493.
Where are you based and which time zone do you work in?
I am based in Muscat, Oman (Gulf Standard Time, UTC+4) and have worked both on-site and remotely, including with a company in Richmond Hill, Ontario.

Recommendations

4 in full

What colleagues and managers say.

  • Jun 2025

    I had the pleasure of working with Mohammad Zafardoost for two years at Part Software Group, where I was leading the API Gateway team and Mohammad was one of our key team members in the infrastructure division.

    Mohammad consistently impressed me with his strong technical knowledge, eagerness to learn, and calm, respectful demeanor. He demonstrated excellent problem-solving abilities and had a natural talent for effective teamwork. He was also highly reliable when it came to managing and delivering tasks independently.

    One of his most notable contributions was playing a significant role in the design of our digital wallet platform — a complex and impactful project that benefited greatly from his insight and dedication.

    His strong technical and interpersonal skills made him such a trusted member of our team that we often involved him in technical interviews for new hires — a testament to the respect and confidence he earned from his peers and leads.

    Although he has since founded his own company, Mohammad remains deeply involved in technical work, software development, design, and R&D. I’m confident that his mix of technical expertise, professionalism, and team spirit will make him a valuable asset in any endeavor he chooses.

    I wholeheartedly recommend Mohammad to anyone looking to collaborate with a capable, thoughtful, and driven professional.

    Majid Yaghouti JafarabadSenior Software Engineer, Fintech & PaymentsManaged Mohammad directly at Part Software Group

  • Dec 2021

    “Performance addict”, If you want to ask me about Mohammad, I will describe him in these two words. He is a tech-agnostic developer and I am honored and proud to share with you that I was so fortunate to work with a person like him. Excellent technical knowledge, great capacity to solve any backend challenges in shortest possible time and fast development made him a perfect backend technologies engineer.

    Mahmood BagheriSenior Frontend EngineerWorked with Mohammad on the same team

  • Dec 2021

    Mohammad has exceptional skill in analytical thinking which makes him a great software engineer. He is also a patient and humble person.

    Mohammadreza MirhajianmoghadamDevOps Engineer, MSc Software EngineeringColleague

  • Dec 2020

    His developing skill in Back end major is truly phenomenal and he is one of our most valued employees in Fusense Digital Services

    Ehsan HaghighiCo-Founder, Fusense Digital ServicesManaged Mohammad directly