Vadim Z.
Kyiv, Ukraine
100%
Job Success
Expert-Vetted
Expert-Vetted | CTO & Architect | Advancing Business with IT Solutions
$80.00/hr
— Among the Top 1% of Upwork Freelancers
— Top Rated Plus Freelancer & Expert Vetted Freelancer
With over 14 years of experience in software development, including the last 5 years as a CTO at licensed platforms, I bring a wealth of knowledge and expertise to each project. My passion lies in creating efficient, cost-effective solutions tailored to each business's unique requirements.
I specialize in developing software that is both high-performing and low-resource intensive, and I'm always looking for opportunities to collaborate with clients on a long-term basis.
I have extensive experience with GoLang, Node.js, JavaScript, ReactJS, PHP, Laravel, WordPress, MySQL, PostgreSQL, MongoDB, gRPC, Kafka, Redis, LESS, ElasticSearch, OpenAi, and ChatGPT. Additionally, I am well-versed in managing systems on Kubernetes, Docker, and Linux.
With my riched experience, I bring a deep understanding of the unique challenges and requirements of different types of businesses, and I am well-equipped to help my clients scale their operations and achieve their goals.
To help my clients get the most out of our collaboration, I offer a risk-free trial period. If you're looking for a skilled software architect and engineer with experience in the trading industry to help you scale your business with innovative IT solutions, please don't hesitate to reach out.
Work history
Work history
Backend Engineer for File Upload Server (NodeJS, GraphQL/REST, AWS)
Feb 12, 2024
-
Jun 7, 2024
Private earnings
Database Architect Expert (MySQL & PostgreSQL)
5.0
of 2 reviews
Mar 3, 2023
-
Feb 14, 2024
5.0
"Vadim was such a great addition to our team. He is professional, intelligent, and is extremely knowledgeable on database architecture. The only reason we are ending the contract is due…
Private earnings
Expert Golang Developer for Software Troubleshooting and Ongoing Support
May 19, 2023
-
Feb 5, 2024
"Vadim was an absolute pleasure to work with. Professional, always prompt to respond and proactively communicated with us throughout our project. Most importantly, Vadim has top-notch dev knowledge and I…
Private earnings
GO bug fixes and support
May 17, 2021
-
Jun 5, 2023
No feedback given
Private earnings
Crypto trading Bot- Coin not CFD - custom
May 13, 2021
-
May 29, 2023
Private earnings
Achieve and Measure Smallest Delay For Crypto Exchange API Requests
Apr 7, 2022
-
Nov 29, 2022
"Vadim did an absolutely phenomenal job on this project even though the scope and requirements were extremely limited. He went over and above all of the other freelancers we hired…
Freelancer's response
"Thanks!"
Private earnings
Setup Golang remote debug for Kubernetes(GKE) with VsCode
Nov 17, 2022
-
Nov 21, 2022
Private earnings
Crypto Exchange Improvements
Jul 9, 2020
-
Jan 14, 2022
"He re-coded part of existing features we already Had previously and those features now Works better,Then we created a new component together "Bonus Account" and here he express his best…
Private earnings
Crypto Wallet
Aug 6, 2019
-
Aug 28, 2021
No feedback given
Private earnings
Product developer
Feb 18, 2020
-
May 15, 2021
No feedback given
Private earnings
Full Stack Developer for Binary Options Exchange
5.0
of 1 reviews
Jun 11, 2024
-
Present
5.0
Jan 23, 2025
"Vadim has exceeded expectations on every level during the 6+ months we've worked together. His expertise, dedication, and attention to detail have been nothing short of outstanding. He consistently delivers… Job in progress
Private earnings
Expert Golang Developer for Software Troubleshooting and Ongoing Support
Mar 23, 2023
-
Present
Job in progress
Private earnings
Need to implement integration with TikTok and Google Calendar. Details in the conversation
Nov 10, 2022
-
Present
Job in progress
Private earnings
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Skills
Skills
- Node.js
- PostgreSQL
- Golang
- MongoDB
- React
- MySQL
- Amazon Web Services
- Web Development
- Kubernetes
- Elasticsearch
- API Development
- DevOps
- Cryptocurrency
- Artificial Intelligence
- AWS CloudFormation