(Go) Backend Engineer

FIREGROUP AT A GLANCEFounded in 2016 in Vietnam, FireGroup Technology is committed to building world-class SaaS products that make a global impact on e-commerce. From the outset, we envisioned a world where running an online business is easy, effective, and sustainable, and we have been bringing that vision to life for nearly a decade.TrueProfit is one of FireGroup’s portfolio products, helping Shopify merchants understand what they are really earning - not just what they are selling. It is a real-time profit analytics platform that brings orders, product costs, shipping, transaction fees, taxes, and advertising spend together in one place. With TrueProfit, merchants can track net profit, P&L, product performance, customer lifetime value, and marketing attribution across their stores and channels.ABOUT THE ROLEWe are looking for a Backend Engineer who wants to build deeply for the product - someone who cares about the merchant behind the dashboard, takes ownership beyond assigned tickets, and wants to grow alongside a product used to make better business decisions every day.WHAT YOU WILL DO:Build product systems that merchants can trustDesign and build complex backend capabilities across multiple modules or the broader system architecture.Develop reliable Golang services and APIs that power real-time profit tracking, reporting, analytics, and integrations.Work on challenging product problems such as data synchronization, data accuracy, performance, scalability, and failure handling.Make sound technical trade-offs that balance product velocity, maintainability, reliability, and long-term growth.Collaborate closely with Product, Design, Frontend, Backend, and QA to turn product requirements into high-quality customer outcomes.Take ownership from idea to productionOwn your work throughout its lifecycle: clarify the problem, design the solution, implement, test, release, monitor, and improve it.Write clean, maintainable, well-structured code that follows team standards for linting, Conventional Commits, and Clean Code.Ensure features pass QA and are dependable in production, especially where data quality and merchant trust are involved.Monitor production systems, investigate issues, and proactively propose optimizations that improve stability and availability.Contribute to technical documentation so the product and engineering team can scale sustainably.Build faster with AI, without lowering the barUse Claude Code and AI coding agents as part of your daily engineering workflow — from scaffolding Go structs, MongoDB models, AWS Lambda handlers, and REST APIs to generating tests and documentation.Use AI to investigate complex bugs, refactor legacy modules, review large pull requests, and identify performance or security improvements.Apply good engineering judgment to validate AI-assisted output and maintain a high standard of code quality.Raise the engineering barReview peer code and give thoughtful feedback on code quality, system design, security, and maintainability.Support teammates in debugging, problem-solving, and adopting better engineering practices.Bring a product mindset to technical discussions: understand the “why,” challenge assumptions constructively, and look for the simplest solution that creates real value.WHAT WE ARE LOOKING FORExperience:3+ years of professional experience in Golang development.Experience designing and building backend services for production systems.Proven experience building serverless applications using AWS Lambda.Deep understanding of Separation of Concerns (SoC) and software design patterns.Strong experience with NoSQL databases (MongoDB highly preferred).Technical Skills:Mandatory: High proficiency in prompt engineering and utilizing Agentic AI coding tools, specifically Claude Code.Ability to write clean, maintainable, and highly efficient code.Expertise in RESTful API design and implementation.Proficiency in version control (Git).Strong background in Unit Testing and TDD.Ability to write clear and concise technical documentation.WHAT SETS YOU APARTYou have handled real production challenges: data consistency, retries, performance bottlenecks, system reliability, or incident resolution.You care about the impact of a feature after it ships, not only whether it is technically complete.You can connect engineering decisions to merchant outcomes and product growth.You are excited by the complexity behind a “simple” profit dashboard and want to make that complexity invisible to customers.You see AI as an engineering multiplier and use it responsibly to learn, build, and improve faster.WE ARE MORE THAN HAPPY TO OFFERCompetitive salary package with 13th-month pay and seniority bonusAnnual salary review recognizing outstanding contributionsWork-from-home policy for expecting mothers16 days of annual leave, plus 1 extra day for every 3 years of servicePremium healthcare package and yearly health check-upSpecial occasion support including marriage, maternity, and birthday giftsModern work devices tailored to your role such as MacBook, iMac, Mac Mini, or Windows laptop and monitorRegenerative & Engaging EnvironmentA vibrant workplace with team-building events, annual trip, and various sport clubsFestive gifts for holidays such as Mid-Autumn and Lunar New YearDaily complimentary coffee, tea, fresh juice, and a variety of snacks.