Oleksii
From Czech Republic (GMT+2)
8 years of commercial experience
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1
projects done1
hours workedOpen
to new offersOleksii – Node.js, Typescript, JavaScript
Introducing Oleksii, a seasoned Senior Back-End Developer with a wealth of expertise in Node.js, both in JavaScript and TypeScript. His practical experience spans across various Node.js frameworks, coupled with a strong grasp of object-oriented programming and test-driven development practices. With a vast knowledge of AWS and proficiency in both relational and NoSQL databases, Oleksii is well-versed in backend architectures, from monolith to microservices and serverless. His leadership experience further enhances his contributions, evident in his successful involvement in diverse projects such as gambling, logistics optimization, and insurance applications.
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Potentially possibleExperience Highlights
Node.js Team Leader
Worldwide betting solution with a huge amount of different gambling services. The team is oriented on Payment Stream solutions.
- Made initial analysis of business features, provided feedback regarding implementation, and impacted the current system;
- Converted high-level features into defined technical tasks;
- Coordinated with the Head of Engineering/team leaders from another team regarding complex features and connections;
- Assisted with the technical implementation of the team consisting of 5-7 software engineers;
- Defined the architecture of services, possible improvements, and performance tuning;
- Participated in the company technical interviews for other teams, made skill checks with the definition of PDP;
- Took care of the team's satisfaction to provide a comfortable condition for work.
Part-Time Tech Lead
Big policy insurance solution that is oriented to replace different manual jobs with automated processes.
- Setup project both on technical / team sides starting from MVP till the stable phase;
- Implemented insurance financial solution based on microservices with the connection to external CRM based on Golang and MQ system;
- Rendered technical management of the entire team (backend/frontend SE, QA) and directly communicated to product owners, led the deployment process, maintained code quality of codebase by regular code reviews;
- Resolved any production or deployment issues;
- Involved in the roadmap creation and help to groom the ideas.
Senior Node.js Developer
Modern IoT solution that was created to optimize logistic processes by tracking truck movements.
- Developed truck management system based on IoT devices;
- Took care of full-pipe data processing from raw device signal until delivered to target services;
- Implemented high load solution to achieve the best performance;
- Re-architectured process to achieve the best data consistency on each data step;
- Setup new AWS services for load balancing, databases, etc., and creation of tech docs for other team members
Senior Node.js Developer
Massive company with different project streams oriented toward some business goals.
- Developed and supported AdTech platform related to the integration of advertiser and publisher side;
- Refactored fraud&tracking server from scratch;
- Supported portal system related to the full cycle of the AdTech industry;
- Took care of investigation into complaints from end to end (from logs until diving into external code);
- Created admin panel for advertisers, updated SDK, and added templates;
- Participated in the PR review process, directly communicated with business managers, and took care of learning new team members.
Node.js Developer
It is an educational project which was created to boost financial knowledge in the business area.
- Developed a financial system
- Worked on the implementation of a study platform using microservices and data migration scripts
- Developed API for iOS and Android applications using FCM, and web sockets
- Created new services to manage bookings, events, chat
- Monitored load and checked possible improvements
- Supported legacy subsystems