Professional Summary

Backend Software Engineer and Tech Lead with 5 years of experience architecting high-concurrency systems and real-time distributed platforms serving millions of users. Proven track record leading engineering teams, designing resilient payment and event-driven architectures, and scaling Go and Python services in high-throughput production environments.

Technical Skills

• Languages: Go, Python, Solidity
• Frameworks & Protocols: FastAPI, Gin, REST, WebSocket
• Databases & Caching: PostgreSQL, MongoDB, ClickHouse, Redis
• Messaging & Streaming: RabbitMQ, Redis Streams
• Architecture: Distributed systems, microservices, event-driven design, high concurrency, idempotency
• DevOps: Linux, Docker, Git, CI/CD
• Security: JWT, OWASP best practices
• Leadership: Tech lead of a 3-engineer team, design consultant to other teams in the company

Work Experience

Pars Hadish (B2C travel and payments platform) - 2023-Present

• Stack: Go, Python, FastAPI, PostgreSQL, MongoDB, ClickHouse, Redis, RabbitMQ, WebSocket, Docker

B2C Tourism Platform

• Tech lead on a tourism platform serving 3M+ users and 9+ B2B partners. Ran it alone for months after the previous developer left, then the company hired 3 juniors around the work and I onboarded each of them. Own system design, code reviews and technical direction
• Built payment routing to per-account settlement terminals, plus a reconciliation system of 3 interacting state machines that resolves mismatches automatically or hands them to an operator
• Built corporate benefit-card contracts (quota- or balance-based entitlements per employee) and a multi-case refund engine (discount codes, disability subsidies, corporate credits); redesigned DB connection lifecycle and Redis caching to sustain 50,000 concurrent peak users

Payment Gateway

• Own the production payment layer, built from scratch in Python/FastAPI and Go for two separate teams. Every provider sits behind the same 6-endpoint contract, so adding a gateway changes no calling code. Redis distributed locking on the idempotency key guarantees exactly-once capture. 5 gateways integrated, and the Go build runs in two municipal projects

Audit Log Service

• Designed and built a tamper-evident audit log service in Go. Every connected backend gets its own HMAC-SHA256 hash chain, so an altered record is detectable rather than arguable. Ingestion runs through Redis Streams into ClickHouse, with an emergency mode that watches disk and rotates logs

Nekisa — Building Management & Security Monitoring

• Tech lead on a building management and security platform running 4,500+ IoT devices in production at a large shopping mall and a metro system. Cameras, access control and barriers push events through RabbitMQ into a scenario engine operators configure themselves: open a door, and that zone’s cameras come up
• Added several new device types as the only backend engineer on the system, including camera tamper detection that captures the shock-wave signal and a snapshot when someone physically disturbs a unit. Currently preparing the platform for a formal security certification

Real-Time Analytics and Taxi POS

• Built a high-throughput analytics system on FastAPI, ClickHouse and RabbitMQ, with a visual Journey Builder for user flows and A/B tests. Also built the WebSocket backend carrying live POS payments and location streaming for a taxi fleet

AI-Powered Supermarket Agent

• Built and own a production WhatsApp shopping agent: voice or text orders, with product search, cart state across long conversations, and order creation

Atishahr (enterprise ticketing SaaS) - 2022-2023

• Stack: Python, FastAPI, PostgreSQL

SIB Ticket System

• Optimized a key reporting endpoint, achieving a 20x performance improvement and eliminating slowdowns under high load
• Delivered the second version of the platform on FastAPI, adding asynchronous request handling to absorb increased system load

Mehr Pars (enterprise resource-management software) - 2021-2022

• Stack: Python, FastAPI, PostgreSQL

Organizational Resource Management System

• Built a data migration tool that moved clients off legacy project management systems onto the Rainesh platform without data loss

Comprehensive Warehouse System

• Developed a reverse proxy that replayed heavy backend load against a large warehouse system, which let the frontend team find and fix failures before they hit production

Open Source

• PyRemote (265 stars, 68 forks), an educational security-research framework in Python for exploring remote-control patterns over a chat transport
• Muxr, A Go WebSocket multiplexing library for efficient real-time communications
• IP, A Go TCP server that returns the client’s IP and country in multiple formats
• PriceBot, A Go Telegram bot providing real-time currency exchange rates, gold prices, and cryptocurrency values
• Social Token Experiment, A minimalist ERC-20 social token on Polygon, designed as an experiment in on-chain communication (Solidity)

Languages

• English: Professional Working Proficiency

Education

• Bachelor of Science in Civil Engineering