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Semen Martynov

FinTech & Blockchain Engineering Leader | Distributed Systems Expert | Teacher of Computer Science

St Petersburg, Russia

๐ŸŸกLurking

20+ years' experience in IT across development, research, and management roles. Expert in blockchain, distributed systems, and low-level programming (Linux kernel, networking). Experience spans banking software, web services, mobile apps, DeFi protocols, and smart contracts. Also a teaching professional at St. Petersburg Polytechnic University and ITMO University.

Work Preferences

Salary

USD 8,000

Skills

Blockchain Development10/10
Distributed Systems10/10
Docker / DevOps9/10
C++9/10
Consensus Protocols (PoS, PBFT, CRDT)9/10
Terraform / Ansible (8/10)CI/CD (Jenkins, Gradle) (8/10)DeFi / AMM Protocols (8/10)Engineering Management (8/10)Python (8/10)AWS / Cloud Infrastructure (7/10)Tokenomics / Financial Modeling (7/10)IPFS (7/10)Solidity (7/10)Rust (7/10)Cryptography (7/10)Smart Contract Security (7/10)TON Blockchain / Tact (6/10)Go (Golang) (6/10)HFT / Low-latency Systems (6/10)

Work Experience

C++ Blockchain Expert

Confidential Blockchain Company

Sept 2025 โ€” Apr 2026

My role involved both on-chain and off-chain development: - Developed and optimized AMM protocols for a DEX (Python). - Created EVM Smart Contracts (Solidity) implementing bonding curves and integrating with liquidity pools, performed deep-dive security audits and gas-cost reductions. - Maintained a core Blockchain Indexer (C++), ensuring high data throughput and low latency. - Built internal infrastructure and developer tools using Go (Golang). - Covered complex DeFi logic with automated tests (Node.js).

Architect

Social solutions, JSC

Oct 2021 โ€” Apr 2023

Leveraged expertise in code quality assurance and architecture management during company transition to B2B services, contributing to back-end team and new strategic direction.

Team Lead

AXIOMA GROUP

Oct 2021 โ€” Sept 2025

As an Engineering Manager with a strong focus on the technical aspects of product development, I lead and contribute to diverse blockchain and distributed systems projects, combining hands-on engineering with strategic team management. My key accomplishments include: - Blockchain Integrations: I develop cross-chain bridges with wrapped coin mechanics, enabling decentralized trading (DEX). Integrated with the Ethereum blockchain, including porting cryptographic algorithms for account and key management. - Financial Models: Crafted comprehensive financial models (tokenomics) for various projects, spanning social networks, healthcare solutions, and metaverse platform. - Consensus Protocols: Conducted analytical reviews and technical descriptions for protocols such as CRDT and PBFT, applied in a Node.js-based DLT project. - Decentralized Governance (DAO): Established collaborative frameworks for the co-management of digital assets, fostering trust and cooperation. - Research and Development: Conducted R&D initiatives to explore the application of large language models (LLMs) in business workflows (Python). - Cloud Infrastructure and Security: Managed cloud infrastructure on AWS, employing Terraform and Ansible. Successfully mitigated DDoS attacks to ensure platform stability and resilience. - Leadership and Team Management: Built and scaled high-performing engineering teams. My focus was on mentoring and professional growth through regular 1:1s and collaborative processes. Supported business stakeholders by aligning engineering efforts with business objectives and refining operational processes. The last project: Developed a crypto derivatives solution leveraging Bitcoin futures data from Deribit. Designed and implemented delta-neutral option strategies (Condor, Strangle), delivering them to retail users via a FinTech dApp on the TON blockchain (Tact) with automated payouts at expiry.

Senior Blockchain Core Developer

AXIOMA GROUP

Oct 2020 โ€” Sept 2021

Developed a PoS-based consensus protocol in C++. Designed and built a distributed file storage solution leveraging IPFS with on-chain access control. Handled various DevOps tasks.

CTO

Social solutions, JSC

Sept 2019 โ€” Sept 2021

Technical oversight of three development project teams. Responsible for technology selection, architecture design, security, talent management, and publishing mobile apps to Apple and Android stores. Used Python, Redis, RabbitMQ, Node.js (WebSocket), Swift, Java/Kotlin.

Senior Software Engineer

Social solutions, JSC

Aug 2018 โ€” Aug 2019

Launched a customized Chromium-based corporate browser with enhanced security and anonymity. Integrated with corporate services and knowledge base. Released versions for Windows and Android.

Senior Blockchain Developer

Pura

Feb 2018 โ€” Nov 2018

Worked on a fork of the Dash cryptocurrency (C++). Implemented block complexity calculation changes via Spork, commonnode mechanism alongside masternodes, integration with automatic masternode deployment service, and wallet design updates (Qt).

IT Consultant (Senior R&D Engineer)

BNY Mellon | Eagle Investment Systems

Sept 2016 โ€” Mar 2020

Eagle Investment Systems is a global provider of financial services technology and a subsidiary of BNY Mellon (The Bank of New York Mellon Corporation). I worked as a Research And Development Engineer for a Russian company FinSTC which eventually became a part of Eagle Investment Systems. In our work, we used the Scaled Agile Framework (SAFe) and the proprietary domain specific language (DSL) for business processes automation in a huge FinTech project. Initially, I supported this DSL in C++, but later the decision was made to rewrite the core system in Java, and replace the DSL with a subset of the Python language. My main results are: - Participation in implementation of kernel functionality in JavaEE (using Apache Camel, Spring Framework and Hazelcast); - Created a fault-tolerant file storage engine based on MongoDB (GridFS) for migration from an old version of the product to a new one; - Created a translator for a subset of the Python language (originally it was a stripped-down CPython, later a PyPy-based version and query router came before them) and interconnection with Java via CFFI/JNA && WebSockets; - Migration of a proprietary document processor framework from Python 2.7 to Python 3.5; - A series of system performance studies using a proprietary testing framework; - Creation continuous integration (CI) pipelines for Jenkins and support for Gradle (Groovy) build scripts; - Integration for two importan

Senior Software Engineer

Undisclosed IT Company

Jan 2016 โ€” Sept 2016

Identified anomalous behavior to detect bots among users of a dating service. Performed DevOps tasks and was an early adopter of Docker.

Software Engineer

Orc Group (now part of Broadridge Trading and Connectivity Solutions)

Jul 2015 โ€” Dec 2015

Drove performance and latency improvements for core HFT system by profiling with LLVM Clang Sanitizers and perf. Executed low-level hardware-specific optimizations (CPU architecture, cache efficiency, SIMD/vector instructions). Maintained the core API between the engine and trading algorithms.

Software Engineer

TELROS

Feb 2014 โ€” Jun 2015

Worked at a company focused on research, development, and production of telecommunication equipment and information protection solutions.

Technical Support Trainer

Samsung Electronics Rus

Sept 2008 โ€” Feb 2009

Organization and conduction of the trainings about modern technologies used in mobile devices; podcasts recording.

Chief of IT department - Senior IT Engineer

Federal State Unitary Enterprise "Uralaerogeodesy"

Dec 2005 โ€” Aug 2011

Led the creation and scaling of a 6-8 person IT department, establishing processes, infrastructure, and procurement planning. Designed and deployed a unified distributed network, core corporate services, and secure infrastructure (including FreeBSD-based systems and VPN connectivity), while enabling compliance for state secret data handling.

Laboratory Assistant

Ural Radio Engineering College named after A.S.Popov

Dec 2004 โ€” Jun 2006

Adjustment and repair of the equipment in the lab. Conduction of lectures and seminars on C++ and basic algorithms.

Education

Peter the Great St.Petersburg Polytechnic University

MSc ยท System and Application Software Development at the Institute of Computer Science and Cybersecurity

2022 โ€“ 2024

Ural State Technical University

Engineer ยท Automated Data Processing and Control Systems at The Faculty of Radio Engineering

2006 โ€“ 2011

Ural Radio Engineering College named after A.S.Popov

Technician ยท Automation of Information Processing and Control

2002 โ€“ 2006