Looking for a job

Aro Militosyan

@aromilitosyan

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I build fault-tolerant Go and Python fintech and blockchain services.

Armenia

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What I'm looking for

I'm looking to build reliable, high-throughput backend services where I can solve problems in distributed systems, fintech, blockchain, AI-enabled platforms, and production reliability.

I've built production backend systems for Mone and Fasttoken, spanning recommendation platforms, document intelligence, blockchain indexing, and Stripe billing. My work centers on Go and Python services that remain reliable under high-volume, event-driven workloads.

At Fasttoken, I delivered a Stripe-based billing system for a blockchain scanner API and operated indexing pipelines handling approximately 65M transactions, 358M+ logs, and a 4 TB PostgreSQL dataset. I also built Ethereum JSON-RPC APIs, WalletConnect-integrated services, and secure Web3 authentication using EIP-191 and short-lived JWTs.

At Mone, I engineered a Kubernetes-deployed Go recommendation backend with Kafka, GCP Pub/Sub, Redis-backed Asynq, Transactional Outbox, and CDC. I also built a Python document-processing service using OpenAI API, MCP tools, agent skills, OAuth/OIDC, AWS S3, and deterministic validation around AI output.

I focus on idempotency, retry-safe processing, data consistency, observability, and practical integration design. Earlier at Code Republic Lab, I developed Image and Video Tool APIs for the Picsart Editor SDK and built Python regression suites with 90% code coverage.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer

Current

Mone

Feb 2026 - Present (7 months)

Engineered a Go recommendation backend with Hexagonal Architecture, Kafka, and Kubernetes. Built a Python document-processing microservice with OpenAI API and MCP tools.

Go Gin PostgreSQL Redis Kafka Asynq Kubernetes Hexagonal Architecture CDC ONNX Runtime Prometheus OpenTelemetry Grafana Python OpenAI API MCP

Backend Engineer

Fasttoken

Jun 2022 - Feb 2026 (3 years 8 months)

Designed and delivered Go microservices for blockchain indexing and Stripe-based billing. Implemented idempotent payment processing and Ethereum JSON-RPC APIs.

Go Echo Gin Ent Sqlx PostgreSQL Redis Clickhouse Stripe API JSON RPC WalletConnect EIP 191 JWT Goose Kubernetes Linux

Software Engineer

Code Republic Lab

Jun 2021 - Jun 2022 (1 year)

Developed and maintained high-performance Image and Video Tool APIs within the Picsart Editor SDK. Engineered automated validation and regression suites in Python with Pytest.

Python Pytest API Development