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  1. Freelancers

Vlad Haiko

Offer Vlad work on your next project.

Ukraine Lvov, Ukraine
3 hours 40 minutes back
Available for hire available for hire
on the service 4 days 6 hours
Freelancer Vlad H. — Ukraine, Lvov. Core skill — Javascript and Typescript, Web Programming

Rating

Successful projects
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Rating
224
Javascript and Typescript 1
1105 place out of 3449
Web Programming
2525 place out of 6421

CV

Hello!

I am a Senior Backend Engineer with 7+ years of commercial experience building web platforms, fintech solutions, marketplaces, gaming services, and microservice-based systems.

My primary expertise is Node.js, NestJS, TypeScript, PostgreSQL, and AWS. I have worked on high-load systems, fintech platforms, third-party integrations, payment solutions, and cloud infrastructure.

My experience includes:
• Designing system architecture from scratch
• Building REST APIs
• Developing microservices
• Integrating third-party APIs
• Working with PostgreSQL, Redis, Elasticsearch, and DynamoDB
• AWS (Lambda, API Gateway, SQS, S3, CloudWatch)
• Docker and Kubernetes
• Event-driven architectures
• Authentication and security systems
• Performance optimization and large-scale data processing

I have worked both independently and as part of large engineering teams. I also have experience with code reviews, mentoring developers, and participating in architectural decision-making.

Skills and abilities

Programming