I’m a passionate and results-driven Golang Backend Developer with 3+ years of experience building scalable, high-performance backend systems. My expertise includes Go (Golang), RESTful API design, microservices architecture, and working with relational databases. I thrive in Agile teams, delivering clean, efficient, and reliable backend solutions that
drive real business impact.
Golang
Docker
RESTful API
REST API
RESTful Architecture
Back-End Development
Back-End Development Framework
Microservice
SQL
MySQL
Redis
CI/CD
Web Development
Web Application
Ecommerce Website
Viktor N.
Odesa, Ukraine
$50/hr
5.0
6 jobs
Audit | Google Tag Manager | Google Analytics 4 | Server-side tagging | Data Analytics | Data Visualization
Welcome to my profile. I’m a software engineer who understands analytics from the inside. I don’t just configure GA4, GTM, and pixels.
Where a typical tracking specialist only works through the interface, I can go deeper: build custom GTM templates, implement server-side tracking, connect APIs, design ETL pipelines, set up data warehouses, and fix the real causes of data loss, duplication, and tracking errors.
I deliver analytics end-to-end: from audit and architecture to implementation, debugging, data storage, processing, and reporting. You get not a set of disconnected configurations, but a reliable analytics system that actually helps your business make decisions.
I’ve been working in software development since 2007. Senior level in Golang, PHP, Python, and C++. Former team lead. For the last 4 years, I’ve been focused on marketing data, web analytics, server-side tracking, ETL, and data infrastructure.
🛠️ I Can Help With
📈 GA4, GTM, DataLayer setup and debugging
📈 Meta Pixel + Conversion API
📈 TikTok Pixel + Events API
📈 Pinterest Pixel + Conversion API
📈 Google Ads tracking: web + server-side
📈 LinkedIn Insight Tag
📈 Microsoft Ads tracking
📈 GDPR / cookie consent setup
📈 Enhanced Ecommerce and conversion tracking
📈 Event tracking: forms, scrolls, clicks, videos, custom events
📈 Custom GTM templates
📈 Server-side tracking architecture
📈 API integrations
📈 ETL, mapping, validation and data processing
📈 BigQuery, PostgreSQL, ClickHouse, Snowflake
📈 Dashboards and reporting
🔍 Audit First:
Not sure what is broken in your tracking or what should be improved first?
Start with an audit.
I can review your current analytics setup and provide a clear report with:
✅ how your tracking system works today
✅ where data is being lost, duplicated, or misattributed
✅ what should be fixed first
✅ what can be improved or added
✅ what architecture will work better for your business
🤝 What You Get:
You are not locked into implementation with me after the audit. You can use the report to compare approaches, validate other opinions, and make the right decision for your business.
Many clients continue working with me long-term because they need more than setup - they need a technical analytics partner.
Send me a message, and I’ll tell you what kind of audit makes sense for your setup.
Golang
Google Analytics
PostgreSQL
Apache Airflow
Marketing Analytics
Pixel Setup & Optimization
Google Tag Manager
Web Analytics
Conversion Rate Optimization
BigQuery
Data Analytics
ETL
Looker Studio
Tableau
Warehouse Management
Meta Pixel
ClickHouse
Snowflake
Analytics
Analytics & Tracking Setup
Marcin L.
Kharkiv, Ukraine
$50/hr
5.0
25 jobs
I'm Martin – a full-stack developer and DevOps engineer with 5 years of industry experience.
I discovered coding and software systems design at the age of 17, and it's been my passion ever since. I'm dedicated to continuously improving my skills and delivering work that is both effective and impactful.
My career has primarily focused on web development, where I've gained expertise in front-end technologies such as React, Next.js, and Tailwind CSS – my personal favorites. I also have significant experience with React Native and am the creator, product owner, and sole developer of the Pray4UA app.
On the backend, I specialize in building scalable, production-ready web applications. I have extensive experience with Node.js and Golang, as well as some familiarity with Python web frameworks. In addition to mastering specific technologies, I pride myself on creating well-structured REST APIs and designing systems that are scalable, well-tested, user-friendly, easy to manage, and future-proof.
I enjoy working with relational databases. I'm able to write complex and efficient SQL queries when needed. I also have some experience with database administration. My primary expertise is with PostgreSQL, where I have extensive hands-on experience and a clear preference for using it in my projects.
As an experienced DevOps engineer, I've worked extensively with AWS and GCP, as well as exploring other cloud providers. My DevOps expertise includes managing public cloud workloads, writing and optimizing automation scripts, implementing Infrastructure as Code solutions, using Ansible for configuration management, and containerizing workflows with Docker.
Some of my notable achievements include:
- Designed and implemented a multi-regional A/B testing system from the ground up, currently serving millions of users with a 95th percentile latency of less than 200ms.
- Building automation management dashboards from the ground up for multiple companies.
- Creating the platform for the Christians for Ukraine initiative, which includes a custom CMS, an integrated website, a reporting and statistics system for literature orders, an administration dashboard, and numerous other features.
- Developed the Pray4UA mobile app, including the entire backend, using Supabase and React Native.
More details about these projects can be shared during our interview.
Beyond my technical expertise, I value honesty and openness in all my professional relationships. When I was freelancing, I occasionally encountered dishonest clients who tried to exploit my work without paying. However, ALL of my clients can attest to my honesty, diligence, and the high quality of my results.
Golang
Docker
RESTful API
Google Cloud Platform
Python
Deployment Automation
PostgreSQL
Database Architecture
Software Architecture & Design
TypeScript
DevOps
GraphQL
React
Next.js
Front-End Development
Valeriy T.
Kyiv, Ukraine
$20/hr
5.0
9 jobs
I am a Golang back-end developer with 2 years of professional experience working on different applications. I specialize in creating backend solutions that prioritize efficiency and scalability.
I've been working mainly with backend services and web applications in various spheres.
What makes my products especially good is my unique approach to building each project's architecture. Using Clean Architecture combined with Domain-Driven Design and a Feature-First approach helps create loosely coupled applications that are easy to test and maintain. This methodology also allows other developers to adapt quickly and start adding new features to the project as soon as possible.
My skills include:
- Golang, Rust, and Typescript
- SQL and NoSQL Databases
- OpenTelemetry, Grafana, profiling, OpenAPI
- Linux, Docker, nginx, AWS S3
- REST, WebSocket, gRPC, GraphQL
- HTML, CSS, JS
- Monoliths, Microservices
- SOLID, DRY, OOP
Golang
Docker
JavaScript
Back-End Development
Database
Redis
PostgreSQL
Linux
HTML
CSS
Tailwind CSS
System Deployment
Bohdan P.
Dovhe Pole, Ukraine
$25/hr
5.0
1 jobs
Hi! I’m a Senior iOS Engineer with 5+ years of experience building polished apps for iOS, macOS, watchOS, tvOS, and iPadOS. I specialize in Swift and SwiftUI, with a focus on performance, clean architecture, and smooth App Store approvals. Whether you need a full app from scratch, a SwiftUI migration, or AI integration, I’m here to help you ship faster and scale smarter.
🔧 What I Deliver
✅ Native iOS Development (Swift, SwiftUI, UIKit, Combine)
✅ Full-cycle delivery: design → code → App Store launch
✅ UIKit > SwiftUI migrations, crash reduction, tech-debt cleanup
✅ Offline-first architecture (Core Data / Realm)
✅ Firebase, REST & GraphQL API integrations
✅ Apps for iOS, macOS, tvOS, watchOS
✅ App Store Optimization (ASO), testing, CI/CD, deployment
💡 Past Results
- Rebuilt and launched SwiftUI-based iOS apps for EU and US clients in categories like business, lifestyle, and utilities.
- Migrated UIKit legacy codebases to SwiftUI, improving maintainability and reducing crash rates.
- Developed and published apps for iPadOS, macOS, and tvOS in full alignment with Apple’s design and technical guidelines.
- Integrated REST and GraphQL APIs into SwiftUI apps using testable MVVM architecture.
- Helped clients pass App Store review on first submission by strictly following Apple’s HIG and privacy rules.
- Added chat features and AI components using tools like OpenAI’s ChatGPT API, including basic chatbot flows and smart content generation.
🛠️ Stack & Tools
Swift • SwiftUI • UIKit • Combine • Firebase • Realm • GraphQL • REST • RevenueCat
Xcode 15 • Git • Figma • Jira • Postman • RxSwift • Core Bluetooth • ARKit
🌍 Communication & Availability
🇪🇺 Based in Central Europe (UTC+2)
🕓 Full EU overlap | US-friendly hours for long-term projects
📣 Daily Slack/Email + async Loom updates - no chasing progress
🤝 Why Hire Me
✅ SwiftUI-native mindset = faster delivery & better maintainability
✅ Proven results = App Store launches, crash-free apps, clean transitions
✅ Clear updates = no guesswork, no delays
✅ B2B-friendly = long-term, NDA-secure partnerships welcome
📩 Let’s get your app shipped - clean, tested, and ready for the store.
Send a message or invite to job!
Swift
SwiftUI
Objective-C
UIKit
Software Development
iOS SDK
tvOS
macOS
iPadOS
watchOS
iOS
iOS Development
AI Development
Bohdan Y.
Kharkiv, Ukraine
$20/hr
5.0
1 jobs
Golang developer
About Me
As a Golang developer, I had
experience of working with databases
such as MySQL and PostgreSQL,
developing REST API servers, small
websites, developing Telegram bots,
desktop applications and Command
Line applications, had little experience
in cryptography.
As a computer system engineer, I had
experience of working with office
equipment, implementing AD DS,
DHCP, DNS, databases, file and Hyper-
V servers.
Golang
JavaScript
Back-End Development
PostgreSQL
REST API
Git
GitHub
JSON API
HTML
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