Oct 2024 – Jan 2026 · 1 yr 3 mos · Dubai, United Arab Emirates · Hybrid

• Lean Technologies is a fintech company that enables businesses to access and initiate their end-users’ banking operations, such as payments and financial data retrieval.
• Its core product is a bank payment API, helping businesses initiate and reconcile account transfers. Lean also offers services for retrieving banking data, identity verification, and financial insights — used for scoring, onboarding, and automation business processes.
• During my work at lean:
• Designed and implemented a Kafka Inbox design pattern in the live system, changing the core of Lean without any downtime. As a result, processing speed increased by 14% due to the complete elimination of internal delays — the so-called queuing problem.
• Successfully handled 2 critical tasks for high-value customers, resolving production issues that
• immediately impacted end users.

Feb 2022 – Feb 2024 · 2 yrs · United Arab Emirates · Remote

• I worked on the Referrals project, which was the largest channel for acquiring new users. My focus
• was on creating a user-friendly and easy-to-maintain product. Key success metrics included costs,
• complaint rates, and user retention. Over 2 years, I contributed to the growth from 15 million to 35
• million users by introducing innovative features.
• I also worked on the Adoption project, which aimed to retain users and promote the use of additional
• products.
• Key Achievements:
• Built an observable system to quickly respond to potential issues.
• Provided level 3 support, resolving complex user requests.
• Improved and rewrote 90% of the existing code in the Referrals project.
• Conducted over 50 live-coding interviews.
• Tech Stack:
• Languages: Kotlin, Java
• Database: Postgres
• Messaging: Custom Kafka
• DevOps: Docker, Kubernetes, TeamCity
• Cloud: Google Cloud Platform
• Monitoring: New Relic, Grafana
• Reason to quit:
• After years of intense, rewarding work, I reached a point of exhaustion and recognized the need for a
• break. I decided to take a sabbatical to recharge and regain my energy for future challenges.

Aug 2020 – Feb 2022 · 1 yr 6 mos · St Petersburg, St Petersburg City, Russia

• I led the Bank Guarantees project at VTB Internet Bank, focusing on medium-sized small businesses.
• As part of the "600 Days" transformation initiative, we rewrote old systems and developed a
• user-friendly API-driven system for issuing guarantees to clients, bank employees, and partners.
• Key Achievements:
• Built and led a 15-member result-oriented team as both team lead and scrum master.
• Delivered 8 production-ready services, including a file service, running successfully for a year across
• multiple banking products.
• Initiated the architectural overhaul of a monolithic service.
• Established comprehensive application development standards for Java, covering everything from
• structure and API design to logging and testing.
• Trained 4 interns from beginner to proficient, and conducted training sessions on OpenShift, ELK,
• testing, and more for the department.
• Managed 70% of the department’s applications, spanning 6 teams, and handled third-line support
• for the bank’s clients.
• Played a key role in recruitment for the team.
• Reason for Leaving:
• Seeking international opportunities to further grow as a specialist.
• Tech Stack:
• Languages: Java11, Kotlin
• Frameworks: Spring Boot, Security, Data
• DevOps: Docker, OpenShift, TeamCity, Bitbucket
• BPMN: Camunda
• Messaging: RabbitMQ, IBM MQ, Kafka
• Database: PostgreSQL
• Monitoring: ELK, Jaeger, Prometheus
• Reason to quit:
• I decided to pursue international opportunities to expand my expertise and grow as a specialist in a
• global environment

Sep 2019 – Aug 2020 · 11 mos · St Petersburg, St Petersburg City, Russia

• I worked on the Public Services Platform and Digital Regulations Constructor projects at RTLabs, the
• primary integrator for Russian public services.
• The Public Services Platform was designed as a cloud-based system for departmental employees to
• process citizen applications across whole Russia. The Digital Constructor was a workspace for ministers to easily design and define digital services, detailing requirements, processes, and documentation for citizens.
• Responsibilities:
• Designed system for DRC project
• Solved complex business problems with analysts.
• Conducted code interviews.
• Tech Stack:
• Architecture: Microservices
• Languages: Java8
• Frameworks: Spring Boot, Security, Data
• DevOps: Docker, Kubernetes
• BPMN: Camunda
• Databases: PostgreSQL, MongoDB
• Reason to quit: The project was closed

Jun 2018 – Sep 2019 · 1 yr 3 mos · St Petersburg, St Petersburg City, Russia

• I worked on the BSSBox project, a billing solution for mobile operators, developed by a company
• specializing in billing systems. The goal was to create a billing system for small operators in the Middle
• East, though the project was later shifted to the Russian market.
• Responsibilities:
• Developed and integrated payment acceptance functionality.
• Managed payment data and notifications to related systems.
• Handled card and electronic payments, bank transactions, and statements.
• Integrated with PayPal and acquiring banks.
• Developed business processes using Camunda BPM.
• Integrated with front-end systems.
• Tech Stack:
• Languages: Java8
• Frameworks: Spring Boot, WebFlux
• Messaging: RabbitMQ
• Other: Apache Zookeeper, Docker, Kubernetes, Camunda BPMN
• Reason to quit: The project was closed, and the company decided to focus on a partial deployment in
• Russia. Other projects in the company were not of interest.

Sep 2017 – Jun 2018 · 9 mos · St Petersburg, St Petersburg City, Russia

• I worked on bank deposits for individuals at Tinkoff.ru with a 10-person Scrum team.
• Responsibilities:
• Tested the Tinkoff.ru front end using Google Dev Tools.
• Conducted API testing with Postman and SoapUI.
• Developed and maintained test cases with a self-written framework.
• Created an API testing framework and trained manual testers.
• Tech Stack:
• Protocols: REST/SOAP
• Languages: Groovy
• Testing: Spock framework, Feign client, Apache CXF
• Tools: Test Rail, TeamCity
• Reason to quit: I reached a mid-level Java developer knowledge and sought opportunities in a
• Java-focused environment, which were unavailable at Tinkoff at that time.

Dec 2016 – Jan 2018 · 1 yr 1 mo · St Petersburg, St Petersburg City, Russia

• I completed various backend tasks for websites, primarily handling straightforward development
• work. I utilized Spring Boot for building basic server-side applications and Spring Data for managing
• data interactions. I worked with MySQL for database management, focusing on simple integrations
• and performance improvements. Most tasks were involving routine updates and minor
• enhancements