Nikolay Tkachenko Email & Phone Number

Yerevan, Am

Барселона, Каталония, Испания

Worked as part of the Core team in a dynamic, fast-paced startup, ensuring rapid integration of systemchanges into an evolving and unstable environment.Improved the client API experience by adding support for currency conversions, optimizing workflows, andperforming extensive code refactoring and bug fixes to enhance system stability.

Designed the architecture blueprint for a key service responsible for calculating delivery prices, a criticalrevenue stream for the business. Presented the solution to the Architectural Committee, gaining approval,and subsequently developed the service with my team.Transformed the delivery pricing model from a rigid, hard-coded algorithm into a flexible, modular servicethat allowed rapid creation and deployment of new pricing strategies, tailored to specific shops, users, orgeographic regions. This enabled A/B testing and faster iterations, improving overall business agility andcompetitiveness.Contributed to the support and enhancement of the ETA service, which calculated and provided users and internal systems with accurate "click-to-eat" time predictions.

Москва, Россия

Led performance optimization efforts for the Recommender system of a major online cinema platform,ensuring seamless integration with other company services.Improved main page loading time on ivi.ru by approximately 60ms, enhancing user experience and siteperformance.

Москва, Россия

https://www.t1-group.ru/Maintained and enhanced the RNIS (Regional Navigational Information System), the company's flagshipproject, responsible for processing telemetry data from traffic and emergency services vehicles.Unified diverse hardware protocols through a multi-layered architecture to generate detailed performancereports for municipal services.Managed a complex tech stack, including Golang microservices for data processing, RabbitMQ formessaging and RPC routing, MongoDB for storage, and PHP/Laravel/PostgreSQL for the client frontend.Additionally utilized Redis, etcd, Rancher, and Docker for infrastructure management.

Москва, Россия

Taught multiple technical courses to pupils, covering a wide range of subjects, including:Computer Networks: Fundamentals of networking protocols, IP stack, cryptography (symmetric/asymmetric encryption, steganography), and network application development.Operating Systems: Basic usage, administration, and architectural approaches.Programming Languages: C++, Java, Python, and JavaScript.Information Security / CTF: Web security, reverse engineering, cryptography, network security, and otherCapture the Flag (CTF) competition skills.Mentored a CTF team formed by my students, which is currently ranked in the top 20 globally(https://ctftime.org/team/83435).

Москва

Designed and implemented a tick-based trading simulator for crypto exchanges, aimed at researchingstrategies to reduce costs in MFT trading of alphas.Worked in a seed-stage startup with ~10 employees, where the simulator was integral to developing a viable trading portfolio for securing funding.Optimized connectivity to the main exchange, reducing round trip time from 30ms to 4ms, which was critical for enhancing the trading patterns and execution speed of our strategies.Despite the company declaring bankruptcy, the simulator continues to be actively used in a new iteration of the startup, demonstrating its long-term value and impact.

Москва

Co-founded a web development studio and served as CTO, overseeing the technical strategy, backenddevelopment, and infrastructure administration.Partnered with HookahPlace, the largest hookah lounge franchise globally, becoming their IT partner anddelivering tailored solutions for their business needs.Led a team of 5-10 developers, managing projects from concept to deployment, while ensuring high-qualitycode and infrastructure management.Successfully exited the company by selling my shares, after which the studio continued operating for a fewmore years before being absorbed by a larger web development firm.Led the development of several large-scale projects for clients, including:Overtime: An unreleased social network for football/soccer fans.LEAP: An administrative system tailored for managing hookah lounges.HookahMarket: The leading online store for hookah accessories.Provided technical support for JCFest, the largest hookah culture festival in the CIS, ensuring smoothoperation of its digital infrastructure. Successfully managed and repelled a significant DDoS attack,maintaining the festival’s online presence and stability.