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Julius Liaudanskis

Senior Software Engineer at valantic LT | Stripe Certified Associate Developer | Certified Magento Developer | 6+ Years in Web Development

Location:Klaipeda, Lithuania (Klaipeda, Lithuania · Remote)
Timezone:Europe/Vilnius
Experience:6 Years
Direct Rate
$50–$100/ hour (USD)
Available for Projects

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About & Engineering Approach

Certified Stripe developer (Stripe Certified Associate Developer) and Senior Software Engineer with 6+ years of commercial e-commerce experience. Specializes in integrating Stripe payment modules into online stores and enterprise web apps, designing secure transactional backends in Go, PHP, and Node.js, optimizing PostgreSQL databases, and Docker containerization.

Core Technologies & Competencies

Primary Specializations

Stripe

All Technologies & Tools

Stripe
Certified Associate Developer
Stripe Checkout
Elements
Webhooks
Refund Apis
PHP
Go
Golang
Node.js
JavaScript
Magento
Certified
Custom E Commerce Platforms
PostgreSQL
MySQL
Docker
Restful Apis

Commercial Experience

Senior Software Engineer @ valantic LT (Full-time)

2023-04-01 — Present

Led development and maintenance of high-load web apps, delivering scalable payment and e-commerce solutions.

Back-end Go Developer @ Interactio - Multilingual Meetings Solution

2022-03-01 — 2023-04-01

Developed fault-tolerant backend services and optimized performance.

Full-stack Developer @ emotion

2018-02-01 — 2022-03-01

Delivered a series of successful e-commerce projects with Stripe and other payment-system integrations.

Selected Portfolio & Deliverables

E-commerceRetail

Magento Stripe Module

Developed a Stripe payment module for Magento with Checkout, Elements, and refunds. Successful-payment share rose from 88% to 96%; integration time for new stores dropped to 2 days.

stripe-checkout
php
magento
mysql
SaaSFintech

Go Payments Backend

Designed a transactional Go backend with Stripe and PostgreSQL in Docker. Peak load of 4K payments per hour with no degradation, 180 ms p95 response.

go
stripe-webhooks
postgresql
docker
E-commerceRetail

Corporate Shop Checkout

Integrated Stripe Elements into the valantic corporate store with secure refunds. Checkout failures fell 24%; manual reconciliation dropped 70%.

stripe-elements
nodejs
postgresql
rest-apis

Vetting Standards

Verified
Identity & Commercial Track RecordVerified past employment and client references.
Code
Code & Architecture AuditAssessed on production code standards and type safety.
Security
Direct Contract SupportNo platform lock-in. Work directly with clear terms.

Languages

Verified Links

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