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arash
dolati mehr

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15
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Website
Arashdm.ir
Country
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Specialization
Blockchain Developer | Smart Contract Engineer | Backend & DevOps Expert
Hourly rate
$96/hr
Preferred payment options
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About me
I'm Arash Dolati Mehr, a Senior Backend Developer with 15 years of experience, including 7+ years in blockchain technologies. I specialize in building scalable, secure backend systems using Go, PHP, and Python. I'm an expert in the Web3 stack, proficient in Solidity smart contract development and designing dApps on Ethereum. I have a proven track record of leading teams and delivering complex projects, such as an NFT-based game smart contract used by over 12,000 users and blockchain-based distributed file storage. I deployed smart contracts that automated over 80% of key business processes. I am a strong open-source contributor, maintaining a Go-based distributed storage module (300+ stars). My expertise also covers DevOps, CI/CD, Kubernetes, and cloud architecture (AWS/DigitalOcean). I focus on continuous learning, including Zero-Knowledge Proofs and advanced Gas Optimization. I share my knowledge through technical writing on Dev.to and Medium.

Work experience

Logo Yazılım– Istanbul, Turkey
September 2015 – July 2018
Job title
Senior Backend Engineer
Work experience & achievements
Designed and developed scalable backend services for ERP and financial management platforms used by thousands of enterprise customers across retail and manufacturing sectors. Built and maintained RESTful APIs and distributed services using Go and PHP, ensuring high availability and data consistency in production environments. Optimized critical database queries and backend workflows, improving API response times by ~35% through query tuning, caching strategies, and asynchronous background processing. Introduced Docker-based containerization and implemented GitLab CI/CD pipelines, reducing deployment times from hours to minutes and improving release reliability. Collaborated with DevOps teams to gradually transition legacy monolithic systems toward microservice-oriented architectures, increasing system maintainability, scalability, and fault isolation.
Akbank Innovation Lab– Istanbul, Turkey
November 2018 – September 2021
Job title
Blockchain Integration Lead
Work experience & achievements
Led blockchain adoption initiatives within one of Turkey’s largest banks, designing and implementing enterprise-grade blockchain prototypes on Ethereum-compatible networks. Architected a secure blockchain-based settlement layer for internal banking operations, improving transparency, auditability, and traceability of inter-departmental transactions. Developed an internal blockchain simulator and testing framework to validate smart contract behavior, security assumptions, and edge cases prior to production deployment. Worked closely with cybersecurity, legal, and compliance teams to define technical standards for smart contract audits, transaction monitoring, and risk mitigation. Contributed to pilot programs integrating Decentralized Identity (DID) solutions into KYC workflows, reducing customer onboarding time by ~25%.
Trendyol Group– Istanbul, Turkey
January 2022 – July 2023
Job title
Lead Backend & Infrastructure Architect
Work experience & achievements
Designed and scaled backend architectures supporting millions of transactions per day for one of the largest e-commerce platforms in the region. Led the development of high-throughput distributed systems using Go, gRPC, and event-driven architectures built on Kafka and Redis Streams. Implemented asynchronous processing pipelines to improve system resilience, throughput, and fault tolerance under heavy traffic loads. Led a cross-functional engineering team focused on reliability engineering, observability, and performance optimization. Standardized monitoring and alerting across production environments by integrating Prometheus and Grafana, enabling real-time visibility and faster incident response. Drove cloud infrastructure optimization initiatives across AWS and DigitalOcean, achieving a ~22% reduction in infrastructure costs without sacrificing performance or reliability. Acted as a technical decision-maker for backend architecture, infrastructure strategy, and long-term scala

Education

Istanbul Technical University
Graduation year: 2010
Level of study
PGCE
Major / Field of study
Master of Science in Software Engineering