Kirill Kostiukhin Email & Phone Number

Novakid is a Series B EdTech startup ($41.5M raise) with double-digit revenue growth in 2023. This online ESL learning platform for children aged 4 to 12 has delivered over 15 million lessons since 2017.- Lead a product development team responsible for the teacher's area, core system components such as billing and scheduling, admin panel, and automation for various company departments: sales, support, and teacher operations. HC: 4 BE, 2 FE, 1 No-code engineer, 2 QA, and 1 project manager.- Increased sprint commitment fulfillment from ~40% to ~85% by implementing agile poker and realistic planning.- Boosted team velocity (number of story points completed per week) by ~15% by transitioning from Scrum to Kanban.- Conducted over 15 technical interviews for hiring middle+/senior developers. Hired 5 developers for my team.- Contributed to backend architecture, implementing an event-driven architecture (event bus pattern) for microservices communication with the monolith system and among themselves, enabling faster release cycles for individual services.- Implemented AWS Step Functions for orchestrating complex business processes involving multiple services. This approach allowed the team to launch various WhatsApp bots 1.5 times faster compared to containerized application implementations.- Designed, decomposed, and supervised the implementation of a project integrating with a third-party CDP system (Bloomreach). Developed a robust data and event synchronization system with the 3rd party API using AWS SQS and Lambda Functions, completing the project on time.- Collaborated with DevOps to establish company-wide development and deployment processes for serverless components (lambdas, state machines, layers).- Worked with the CTO to introduce no-code approaches for faster task completion (where it's applicable).- Standardized API documentation using OpenAPI, replacing the previous method of documenting APIs with JSON file collections of endpoint response examples.

St Petersburg, St Petersburg City, Russia

I worked as a developer and an architect to automate manual work with marketing materials related to drugs for a global pharmaceutical company.Contribution as a solution architect- Responsible for architecture of services, internal and external interfaces of systems- Communication with a product team to find the most suitable technical solutions for customer's needs- Wrote a lot of architectural proposals for complex features (schemas, detailed descriptions)- SDLC documentation- Forced the team to use an asynchronous cloud-native approach for communication between services via events (AWS EventBridge)- Replaced an existing database schema (NoSQL, AWS DynamoDB) with a new more efficient one according to AWS best practices- Decomposed many complex technical tickets into smaller ones, checked implementation progress, supported developers during the implementation process if needed- Facilitated many architectural discussions and conversations about complex technical questions- Cross-team coordinationContribution as a developer- Used graphs to implement an important customer's business feature- Introduced integration tests as a part of CI/CD pipeline to increase the quality of the tool- Participated in discussions about project code style and code quality gates- Delivered a lot of user stories and bugfixesNon-project activities- Conducted 25+ technical interviews- Tech mentoring and leading of students (Epam training center students). I am leading a group of mentee (3 - 6 people) that responsible for delivery and maintenance a part of a microservice architecture system which lets ML engineers operate with different ML models (dataset preparation and annotation, training of models, inference) in an easy way (internal project). Three students became junior developers at Epam; two of them - middle developers.

I joined a startup that helped people to learn English through short everyday lessons (answering questions in text or orally with feedback from native speakers) as the first developer.Contribution- Communicated closely with the company stakeholders to understand business use cases, gather requirements and prepare the most suitable technical solution for their needs- Conducted consultations for stakeholders about any technical question- Designed the system architecture and REST API endpoints- Implemented the first version of the back-end from scratches (API for a mobile app for users and a web app for teachers)- Implemented CI/CD pipeline (GitLab CI) to build and deploy the application artefacts- Established process of development (branching strategy, task acceptance flow, code quality gates) - Onboarded one more back-end developer to help me with back-end

Moscow, Russian Federation

I was promoted to the back-end team leader position at the end of summer 2019. Contribution- Communication with a product team and other company departments- Despite the increased amount of communications, I continued to devote a lot of time to writing code- Was responsible for quality tasks delivered by my team (deep code review) - Mentoring of other programmers if needed- Release management- Was leading a team of 2 - 5 back-end engineers

Moscow, Russian Federation

Remontnik.ru is the largest website for the search for contractors for construction works in Russia.Contribution- Maintainance and development of a back-end part of the project (REST API for two web applications and four mobile apps)- Everyday routine: tasks estimation, code review, implementation of new features for users, bug fixing, writing of unit tests- Worked closely with microservice architecture, REST API design- Participated in architecture discussions- Wrote API documentation (swagger)- Implemented internal python libraries- Implemented a couple of big subsystems (anti-fraud; auto segmentation of users based on their actions and distribution of users between personal managers; searching for contractors based on their geo-coordinates)

Penza Region, Russian Federation

Development and maintenance of back-end parts for web sites using Python and Django: new business-logic implementation, writing unit tests, doing code review, planning iterations.Technologies and tools I used: Python, Django, git-flow, Git, SQL, Agile, Jira

Смоленская Область, Россия

I developed the back-end parts for complex web applications: architecture, database design, business logic implementation, writing documentation, deploy. Most of the work is connected with developing backends using Python and Django. But last year I had been working as a full-stack developer: restful API and server-side business logic using Python, Django, DRF, Tornado and client-side logic using JS and EmberJS.Technologies and tools I used: Python, Django, Django Rest Framework, Jinja2, Tornado, WebSockets, Celery, Redis, PostgreSql, Fabric, Git, JS, Emberjs

Bachelor'S Degree, Automated Systems Of Data Processing, 4.49

Master'S Degree, Internet Application Technology, 5

Intermediate Level, English Cources, 4.5