Team lead Ruby on Rails

Описание

AlexanderRyazantsevFull Stack Developer,Tech & Team Leadaryazantsev9@gmail.com+375257659141Alvir9alexander-ryazantsev-b256a234alvirEDUCATIONMathematicsDonetsk NationalUniversity1997 - 2002LANGUAGESRussian (Native)English (B1-B2)INTERESTSGuitarTourismFull Stack Developer and Tech/Team Lead with 20+ years ofexperience delivering products from idea to scale. I help teams turncomplex technical challenges into clear business outcomes: fasterdelivery, better product quality, improved performance, and lowercosts.I have worked with startups and established products, navigated largelegacy codebases, contributed to reusable frameworks and libraries,and led both focused teams and cross-functional collaboration.Alongside hands-on engineering and architecture, I mentordevelopers, improve processes, and actively drive product directionas a Product Owner.Senior Developer & Tech / Team LeadMar 2025 - PresentFreelance / Self-employedSenior Developer & Tech / Team LeadOct 2014 - Apr 2025KrononsoftSenior Software DeveloperSep 2006 - Oct 2014Anadea (Anahoret)Software EngineerApr 2003 - Sep 2006JSC UkrtelecomSoftware EngineerJul 2002 - Mar 2003Yuz-Audit CAREER PROFILE EXPERIENCES

CyclingFreelance projectsRole: Tech Lead / Senior Fullstack DeveloperPeriod: 04.2025 - PresentTe c h n o l o g i e s : Next.js, React, Typescript, Tailwind CSS, Postgres,Playwright, Prisma, Railway, Bull MQ, MailChimp, Cloudflare, Stripe,Google Merchant API, Microservices, Open AI API.Industry: eCommerceMontiplanet / EduyeRole: Tech Lead / Senior Fullstack DeveloperPeriod: 01.2024 - 02.2025Responsibilities: Create a full-fledged platform based on the createdMVP. Make it multidomain, multilangual, multiplatform.Te c h n o l o g i e s : Next.js, React.js, Typescript, Tailwind CSS, Postgres,Playwright, Prisma, WooCommerce API, Railway, Bull MQ, DeepL,MailChimp, CloudflareIndustry: eCommerceDescription: The goal of early childhood education should be toactivate the child’s own natural desire to learn. Montessori toys areideally made of natural materials and are useful to promote learningand independence. They are battery-free toys reflecting real life andfocusing on one skill at a time.Eduye.com is a new platform is set to launch in early 2025 to provideonline courses and help teachers of such courses develop their ideas.Other links: https://montiplanet.ca, https://montiplanet.co.uk, https://montiplanet.com.au, https://montiplanet.nl, https://montiplanet.be,https://eduye.com, https://eduye.nlWhiskeyKissBoutiqueRole: Tech LeadPeriod: 04.2023 - 05.2023, 11.2023Responsibilities: Investigate and complete a legacy app of the dataconversion between two platforms. Complete and kickoff aftermigrating to Nest.jsTe c h n o l o g i e s : App Script, Google spreadsheets, Nest.js, PostgresIndustry: eCommerceDescription: Specializing in boutique and designer clothing, shoesand accessories. Browse our sustainable collection for amazing deals,unique pieces and high quality. PROJECTS

Inter to LearnRole: Tech LeadPeriod: 12.2022 - 01.2023, 12.2023Responsibilities: Create MVP to attract investors. Implementcommunication between interns and companies which look for interns.It looks like upwork for interns.Te c h n o l o g i e s : Ruby on Rails, React, Postgres, Tailwind CSSIndustry: Work marketplaceDescription: The work marketplace to help interns find jobs andcompanies find interns.Plei AppRole: Senior DeveloperPeriod: 02.2023 - 07.2023Responsibilities: Expert of DB level logic optimizationTe c h n o l o g i e s : Ruby on Rails, React, Postgres, FirebaseIndustry: SportDescription: The #1 Pick Up Soccer App in the Country | Play Soccerin your neighborhood, on demand !ListingDoorRole: Tech LeadPeriod: 04.2023Responsibilities: Small issues after recent upgrade, supportTe c h n o l o g i e s : Ruby on Rails, PostgresIndustry: Real EstatesDescription: ListingDoor is more than just an FSBO company. It’s acomplete home selling solution that puts you, the seller, in control ofthe transaction. Everything we do is from a buyer’s eye so your housewill stand out from the pack! Learn from experienced, BILLION-dollarreal estate agents how to successfully sell your home without a firm’shand in your pocket. Get the tools and knowledge to WOW yourpotential buyers.BahamaGoRole: Tech LeadPeriod: 08.2022 - 02.2023Responsibilities: Small issues as a fullstack developer, support.Te c h n o l o g i e s : Ruby on RailsIndustry: Airlines and HotelsDescription: The web application what helps to have Bahamas airlinecompanies and hotels in a single place

StreetEasyRole: Senior Fullstack Developer / Tech Lead / Team LeadPeriod: 09.2016 - 03.2022Responsibilities: Mentor and guru for BY team of juniors/middles.Later a tech lead of one of pods in this big project.Te c h n o l o g i e s : Ruby on Rails, Sinatra, MySql, React, Bootstrap,Postgres, Redis, Docker, Kotlin, ElasticSearch, Flipper, DataDog,Rollbar, SendWithUs, Iterable, GraphQLIndustry: Real EstatesDescription: StreetEasy provides access to real estate listinginformation and data via their website and mobile application. Realestate listings are often accompanied by building information includingnumber of total units, current and past units for sale and for rent,building amenities and public permit information. Additionally,information on nearby public transportation and schools is providedalongside listing information about the property.Tr a c k e rRole: Senior Fullstack Developer / Tech LeadPeriod: 04.2015 - 06.2017Responsibilities: Complete and implement required features fromemployees, customers and other application users. Optimization andrefactoring.Te c h n o l o g i e s : Ruby on Rails, Postgres, MySql, KnockOutIndustry: Time & Project Tracker / FinanceDescription: The web app what helps to track time, manage projects,generate and send invoices, manage a finance side of projects.Tr i p a n e e r ( e B o o k i n g S e r v i c e s )Role: Senior Fullstack Developer / Tech LeadPeriod: 03.2014 - 03.2015Responsibilities: Implement new features, optimize growingapplication.Te c h n o l o g i e s : Ruby on Rails, MongoDB, Postgres, jQueryIndustry: TravelDescription: Specific vacations tours by several categories like yoga,martial arts, culinary. It helps clients find something specific andorganizers promote and find clientsAgentFolio(BuyFolio) - ArchivedRole: Middle/Senior Fullstack developerPeriod: 06.2011 - 02.2014Responsibilities: Coding, architecting, optimization.Te c h n o l o g i e s : Ruby on Rails, MySql, Postgres, jQueryIndustry: Real EstatesDescription: The home search is too complicated for the inbox.Agentfolio is real estate’s only communication platform for buy-sideagents and their homebuyers.

Functional Programming Principles inScalaMay 2013 - Jun 2013CourseraGrade Achieved: 100% with DistinctionThis advanced undergraduate programming course covers theprinciples of functional programming using Scala, including the use offunctions as values, recursion, immutability, pattern matching, higher-order functions and collections, and lazy evaluation.Principles of Reactive ProgrammingDec 2013 - Jan 2014CourseraGrade Achieved: 100% with DistinctionThis advanced course teaches principles of reactive programmingusing Scala: how to write composable software that is event- driven,scalable under load, resilient and responsive in the presence offailures. Concepts covered include monads, futures, observables andactors.I strive to produce ready-made, tested solutions for reuse andimprovement with the help of the collective wisdom of colleagues andothers interested. I try to correct errors in existing libraries andframeworks and make improvements to these tools themselves. Ofteneven a corrected description can trigger a wave of corrections in thecode itself.Dump Hook TS- Port of Ruby DumpHook. Beta at this moment.Dump Hook- A library that helps cache your data received fromperforming user actions in tests. We use it in our acceptance tests toenhance performance of preparing data for the tests. It contains waysto cache Postgres and MySql DBs and you need to take care aboutother sources your own.Archive Hook- Helps to archive data from some root scope with itsdeeper relationsRuby on Rails- I added a correction for time conversion taking intoaccount the time zone CERTIFICATIONS OSS CONTRIBUTIONS