Middle/Senior Backend Engineer

💼 Hiring: Middle/Senior Backend Engineer - Xsolla 📍 Remote - Russian Federation (Moscow / Perm) | 🕐 Posted 18 hours ago - October 2, 2026 | 💰 Not provided | 🧑‍💻 Full-time | 🔗 Go / PostgreSQL / Redis / OAuth / Web3 Xsolla is hiring a Middle/Senior Backend Engineer for the Xsolla ID team to build secure, high-load identity systems. The role focuses on a next-generation IAM platform for Xsolla B2C products, including wallet and Web3 login flows. 📋 Responsibilities include: - Develop and maintain Xsolla ID backend services in Go - Design OAuth 2.0 / OIDC flows, token introspection, and refresh strategies - Extend the Ory-based Auth API (Hydra, Kratos) and custom orchestrator - Apply web security fundamentals: cookies, CSRF/XSS protection, token storage, and TLS - Optimize queries under heavy load across PostgreSQL, MySQL, Redis, and CockroachDB - Build reliable microservices and support a zero-downtime migration from legacy Xsolla Login - Write tested code, join reviews, and support production systems 🔑 Requirements / Must-have: - 2+ years of commercial Go experience - Strong PostgreSQL and Redis skills, including query optimization - Working knowledge of OAuth 2.0 / OIDC, or strong motivation to learn - Web security fundamentals: CSRF, XSS, cookie security, and TLS - Experience with Docker, docker-compose, Git, and Nginx - Solid unit-testing practice and good English reading skills for documentation 🛠 Nice-to-have / Preferred: - Microservices, distributed systems, REST/Swagger, CI/CD, and Kubernetes - Ory (Hydra, Kratos, Keto), CockroachDB, NATS, Kafka, or RabbitMQ - SOC 2, ISO 27001, GDPR familiarity, and AI tools such as Claude or Copilot 💡 Perks & Benefits: - Unlimited Flexible Time Off - Private health insurance (DMS) with dental coverage for the employee and family - Career roadmap on an IC or leadership track, plus professional development - Remote-first culture with flexible hours (10:00-19:00) in gaming and Web3 📩 To apply: Apply: https://jobs.lever.co/xsolla/336c079d-a3b4-4e68-85fe-3bf7d308540a/apply 🔗 Original post: https://www.linkedin.com/posts/remote-middlesenior-backend-engineer-at-share-7511878938864934912-hGtG 📌 New here? Subscribe and mute notifications to avoid noise. 🔎 Search by role or skill, or check the pinned messages for a short vacancy list. ⚠️ DYOR! I do not verify every job. Requests to download and run files or make a payment are major scam warning signs. 🚩 ❗️ I am not hiring. I only share fresh Web3 jobs posted by others. #NFA #DYOR 🌎 All my other social media! Subscribe!👇 💡 Intern/Junior Web3/Crypto/Blockchain Roles DAILY 📱 Allweb3jobs on Twitter/X 📱 Allweb3jobs on LinkedIn 📱 Coinmarketcap token analysis 🪙 Binance token analysis 💬 Want to promote something or just ask a question? Feel free to reach out: @crypto_vazima