Senior Ruby Developer (RoR, ReactJS)

About TrustifyTechnology

Trustify Technology is a fast-growing software engineering and digital transformation company providing AI-driven software development, verification & validation, and automation solutions for global clients across the US, UK/EU, Japan, and Singapore.

Trustify aims to be the top-tier technology outsourcing partner from Vietnam, combining human expertise with AI power to deliver high-quality, cost-effective solutions.

About Ruby Developer Position

We’re looking for a talented Full-stack Developer (Ruby on Rails + React/TypeScript) to help build and scale innovative travel tech products. You’ll work directly with our UK team, contributing to impactful features used by real customers. If you enjoy solving complex problems in a fast-paced, international environment, this role is for you.

Responsibilities

• Take ownership from requirement clarification through system architecture, technical design, technical solutions, implementation, and delivery.
• Work directly with UK stakeholders to understand requirements, clarify technical details, and propose effective solutions.
• Design and implement scalable backend systems and RESTful APIs, considering performance, maintainability, and reliability.
• Build modern, responsive UI using React, TypeScript, and Rails Frontend technologies.
• Identify technical risks, performance bottlenecks, and areas for improvement, and drive appropriate solutions.
• Establish and maintain coding standards, testing practices, and development best practices.
• Conduct code reviews, provide technical guidance, and mentor junior and mid-level developers through knowledge sharing within the team.

Your skills and experience

• 5+ years of professional experience with Ruby on Rails.
• Strong understanding of database design and performance optimization; proven ability to design and build scalable, maintainable backend systems with a focus on code quality and reliability.
• Experience with React and TypeScript.
• Experience with Rails frontend technologies (ERB, Hotwire, Turbo, or similar).
• Experience with Docker and deploying applications to cloud environments; familiarity with GCP and Kubernetes is a plus.
• Experience with code review, technical decision-making, and mentoring is preferred for the Lead level.
• Good English communication skills, with the ability to work directly with international clients.

Why you'll love working here

• Flexible working hours (core time: 9:00 AM – 6:00 PM, Monday to Friday) + 1 WFH day per week
• Healthcare: Annual healthcheck-up, Premium Health Insurance.
• 12 annual leaves+ holidays.
• 13th-month salary.
• Annual project bonus
• Year End Party (YEP), companytrip, team buildingactivities.
• Marriage gift, Lunar New Year gifts, sick leave support, funeral/maternity support.
• Working devices provided.