Vlad – PostgreSQL, Ruby on Rails, Python

Real estate property management service helps homeowners to receive subscription-based services for maintaining their homes.

The platform connects service providers (like plumbers, electricians, and others) with homeowners to provide a marketplace of services managing payments and quality control.

• Designed API endpoints and developed business logic;
• API documentation with Postman and collaborated with the front-end team to integrate APIs;
• Extended web application front-end with home services search and billing features;
• Deployed infrastructure and monitoring setup;
• Covered API services with the unit and functional tests (the project had over 85% coverage).

Jobs platforms targeted aerospace and defense domains. The platform provides tools for companies to find workers with relevant skill set and certifications in the aerospace and defense area. Web and mobile applications are helping to manage a company and worker roles.

• Designed GraphQL API from scratch and extended it with features;
• Implemented UI for talents search tool;
• Managed K8S cluster using Kops and Helm;
• Did infrastructure management on top of the AWS stack.

A set of tools for managing and scheduling Twitter and Instagram direct messages. It consists of a web app and a Chrome extension that help businesses and influencers to optimize their social media presence and automate marketing campaigns.

• Created web applications from scratch according to requirements and Figma designs;
• Refactored Chrome Extension and migration from custom framework to React;
• Integrated with analytics tools;
• Optimized backend performance, reducing the quantity of database read operations;
• Integrated with Stripe and implemented payments functionality.

An automation engine for payments. Merchants can rapidly add or ‘connect’ PSPs, payment methods, fraud providers, and other payment-related services to their checkouts and payment flows.

• Developed APIs for the Dashboard app;
• Extended API for third-party payment services integration;
• Refactored existing connectors SDK;
• Built new CI/CD pipelines;
• Implemented integrations with third-party payment services such as Alipay, Xendit, TrueMoney, Hoolah, PromptRay, and Apaya;
• Took ownership of multiple roles on the project to increase app performance and cover business logic with end-to-end tests;
• Refactored existing connections implementation, which reduced client SDKs latency by 2.5 times.