Sergey Akentev Email & Phone Number

Helsinki, Fi

Helsinki

Took ownership over Mobile Infrastructure and Operations automation. Maintained CI/CD platform for 80+ developers and testers.• Created and maintained CI/CD for mobile apps and both internal/external SDKs with tests suites, build, validate and release pipelines from scratch.• Maintained cross-platform in-house Gitlab, Jira, Slack, App Store and Google Play automation framework.• Worked closely with Lead of each platform to quickly and efficiently change processes and improve platform for other developers.• Ground up built Quality Metrics system that includes Product, Development, Code and CI tracking. In less than a year our team achieved x2 start-time speedup, 99.9% crash-free, 20% code modularization and completely rid off legacy package managers with help of this system.• Owned automated Release Train solutions for both iOS and Android with multiple apps and teams.• Adopted iOS project for both M1 and Intel Macs to build, run and test locally and on CI. Achieved x2 speedup on Apple Silicon.• Fully automated iOS environment setup and managed it with Ansible for 10+ in-house Mac CI runners and all developers' machines.• Passionate to share experience with others on the biggest local Mobile conferences.

Creating, scaling, managing, and developing unique modified TelegramiOS app with engagement of 100M users, 3.4M downloads and 20%retention. Achieved ARR $24K, MRR $2K.Ensuring application responsiveness and reliability, I’ve designed anddeveloped services with multiple tools and methods:• Custom CI/CD done in Ruby using Fastlane framework for bothrapid testing in multiple environments and releasing• Build WebRTC for iOS to get most of video communication ondifferent mobile devices• Swift application with only self-written dependencies, remaininga familiar look and feel to the user• Modern SPA website done in VueJS to achieve proper UI and UX aswell• Traefik router & balancer with async JS and Python backends toensure app responsiveness on such highload system• MongoDB as a database for agile development

Maintained online courses with documentation and live webinars.Trained more than 100 students to setup, develop and deploy Telegramchatbots in Python from scratch and zero knowledge in programming.• Developed and supported short and comprehensive developmentcourse• Set up weekly goals and objectives to incrementally teach all thenecessary development aspects• Provided individual review and progress reports to students• Kept track of the learning pace and individually providedadditional knowledge of specific architectures• Researched multiple resources and provided own experience onreal-life profits of such services

Took ownership over backend development for investment services.Designed and implemented high-load system architecture that meetsmodern standards.• Analysed legacy backend and redesigned it with scalablemicroservices• Developed service for opening investment accounts• Successfully battle-tested the system on 200% growth of userrequests• Speeded up document generation for more than 300%• Made user verification 6 times faster and the overall investmentprocess 300% faster• Supported internal software for operators in bank offices• Organized internal events on implementation of moderntechnical practices and solutions for:Docker with Kubernetes deployment, Test Driven Development,logging with ELK Stack, in-house microservice templates anddocumentation

I’ve developed 50+ private and public successful SaaS automations withfocus on chatbots. Achieved a strong understanding of variousdevelopment practices and worked closely with customers to shop morevalue from the services, including:• Cryptocurrency P2P exchange platform• online radio stream platform• Nvidia hardware-powered video converter service• auto-booking via CRM systems• group chat admins and messages analytics• anti-spam & anti-fraud AI-powered services• fun and entertainment.

Saint-Petersburg, Russia

• Analysed and redesigned web architecture of retail web platforms• Managed Test Driven Development with custom ContinuousDevelopment platform based on Docker & Jenkins• Integrated CI/CD Solution for feature-branches with auto-scalable test environments• Fixed issues of analytics modules that affected user interactionand achieved a 30% platform performance improvement