Backend Engineer, Claude Code Engineer Golang

About the Role

We are looking for a Backend Engineer with strong production experience in Go and practical AWS experience. You will own backend features from understanding the business problem through implementation, deployment, and ongoing improvement.

You will work closely with Product, Design, Frontend, and QA to make engineering decisions grounded in merchant needs. We value engineers who ask why a feature matters, choose practical solutions, and follow through on how their work performs in production.

Our core stack includes Go, AWS, Kafka, MongoDB, and Kubernetes.

What You Will Do

• Build and maintain Go services, APIs, and integrations that support the product's features and data workflows.
• Own the design and implementation of backend modules. Discuss trade-offs with the team and contribute to broader architecture decisions.
• Develop reliable asynchronous workflows, including web-hook and event processing, with appropriate handling of retries, duplicate events, and failures.
• Monitor services and investigate production issues using logs, metrics, and profiling. Improve latency, memory usage, database performance, and infrastructure efficiency.
• Write maintainable, well-tested code. Participate in code reviews, document key decisions, and follow consistent Git and commit practices.
• Propose improvements based on user problems and operational evidence, then check whether the changes deliver the intended result.
• Use AI coding tools such as Claude Code to support development, testing, and documentation while taking responsibility for correctness and security.
• Review teammates' pull requests for correctness, concurrency safety, performance, maintainability, and test coverage. Provide clear, actionable feedback and work with authors to resolve issues before merging.

Required qualifications

• 3+ years of professional Go development experience, with Go used substantially in your recent backend work.
• Strong Go fundamentals, including goroutines, channels, synchronization, and memory management. You can explain how you have applied these concepts and investigated performance or reliability problems.
• Practical AWS experience building, deploying, and operating backend services. You can explain which services you used, your direct responsibilities, and how you monitored or troubleshot them.
• Experience developing REST APIs, working with databases, and writing automated tests, with attention to data correctness and maintainability.
• Clear ownership of previous work and the ability to explain its impact on users, reliability, performance, or cost, with evidence where available.
• A product mindset: you seek to understand the problem, discuss trade-offs openly, and stay involved after release to improve the outcome.
• Ability to independently review teammates' Go code, identify potential bugs and design trade-offs, and explain feedback constructively.

Preferred experience

• Kafka or similar messaging systems; MongoDB data modeling and query optimization; Docker and Kubernetes.
• AWS Lambda and serverless application development.
• System design, distributed systems, or SaaS and e-commerce integrations.

For Senior candidates, we additionally expect experience guiding technical decisions, reviewing designs, and mentoring engineers so the team can deliver more independently.

At the core of FireGroup is a deep desire to grow. We're a passionate team with growth mindsets, turning what we do into a purpose. We're always exploring how to apply world-class innovations and creative ideas to our work - so we can push further, conquer challenges, and go beyond limits.

Our ultimate mission is to develop innovative products that comprehensively and effectively solve problems in e-commerce, making online business easy and sustainable for everyone. We believe that the spirit of daring to step up and our distinctive values are the greatest driving forces behind FireGroup's journey from a five-member startup to a team of over 200 colleagues, leading us to greater challenges and successes:

1. Courage - Dare to step up
2. Growth - Grow beyond yesterday
3. Creativity - Think differently
4. Ownership - Own your work
5. Teamwork - Get Stronger together
6. Trust - Give trust, gain trust
7. Empathy - Walk in other's shoes

At FireGroup, our values don't just live in documents - they live in us. They show up in every decision we make, every product we build, and every story our Firers share. Dive into real stories and everyday actions that bring our culture to life: [protected info]

And that's not all - we've got some great perks waiting for you, including:

Rewarding Compensation & Benefits

• Competitive salary tailored to your skills and experience
• 13th-month salary & seniority bonus
• Annual salary reviews for outstanding contributions
• 16 days of annual leave, with an extra day for 3+ years of service
• Work-from-home policy for pregnant employees
• Premium healthcare and annual health check
• Special occasion support: marriage, maternity bonuses, and birthday vouchers
• Festive gifts for holidays like Mid-Autumn and Lunar New Year
• Free coffee, tea, juice, and a wide range of snacks
• Well-equipped devices provided based on your role (MacBook/iMac/Macmini/Windows Laptop/Monitor)
• Employee Stock Option Program offer for key contributors

Fast-track Growth:

• Gain exceptional experience by building world-class products used by hundreds of thousands of merchants globally
• Buddy Program to guide and support you throughout your onboarding journey
• Regular seminars and workshops to sharpen both technical and soft skills
• Access to Udemy, internal e-learning platform tailored to your growth
• Recognition programs that celebrate your outstanding contributions

Engagement Activities:

• Sports Club: Football, Badminton, Yoga
• Gym area available onsite
• Monthly/Quarterly team bonding events across business units
• Signature company events: Company Trip, Year-End Party, New Year Kick-off, Women's Day, Christmas, and Quarterly Town Halls - all designed to celebrate and connect our people.