Senior Software Engineer (Marketplace Platform), Lotus's
Location: Bangkok, Bangkok, Thailand
Department: Technology
Workplace: hybrid
Employment Type: full
Description
We are building a new marketplace platform to modernize how we process orders across multiple sale channels. The platform replaces a legacy monolithic system with purpose-built services for channel integration and order fulfillment.
As the Senior Software Engineeer, you will own the technical direction and delivery of this platform from day one. You will lead a dedicated build team through the initial delivery, then evolve into leading two permanent squads as the team converges with the existing marketplace team.
This is a dual-track role: you will drive a greenfield platform build while maintaining oversight of a legacy system during a parallel migration period. You will also pioneer AI-native development practices, using AI pair programming as a core part of the team’s workflow.
What You'll Do
Technical Leadership
- Design and review event-driven distributed systems across platform services
- Define API contracts, messaging topology (SNS/SQS), and database schemas (PostgreSQL)
- Establish architecture patterns: adapter-based channel integration, state machine-driven fulfillment workflows, DLQ handling
- Evaluate and review AI-generated code critically — ensuring quality, security, and maintainability
- Own technical decision-making for the platform, balancing speed with long-term maintainability
Delivery & Process
- Lead end-to-end platform delivery from design through production go-live
- Run tight sprint cadences with clear goals and retrospectives
- Establish code review standards, CI/CD pipelines, and deployment practices
- Set up on-call rotations, incident response processes, and runbook documentation
- Coordinate knowledge transfer from the existing team during the build phase
People & Growth
- Build and lead the new platform team from onboarding through production delivery
- After go-live, lead the convergence of the new and existing teams into two purpose-built squads
- Mentor existing .NET developers transitioning to the TypeScript stack
- Span both squads long-term, providing architectural oversight across the domain
Requirements
Must Have
- 6+ years of backend engineering experience, with 2+ years in a tech lead or senior architect role
- Strong proficiency in TypeScript and Node.js
- Deep experience with event-driven architectures: message queues (SQS, SNS, Kafka), async workflows, idempotency patterns
- Production experience with AWS services: EKS/Kubernetes, Aurora/RDS (PostgreSQL), ElastiCache (Redis), SQS/SNS
- Experience designing and operating distributed systems with proper observability (structured logging, distributed tracing, dashboards)
- Proven ability to run agile delivery: sprint planning, backlog management, retrospectives
- Strong code review culture — can review PRs for correctness, security, and design quality
Nice to Have
- Familiarity with .NET 6 / .NET Framework (for legacy oversight during migration)
- Experience with AI pair programming tools (Copilot, Claude, Cursor) and AI-native development workflows
- Experience migrating systems from monolith to microservices
- Contract testing experience (Pact or similar)
- Experience integrating with third-party marketplace APIs (e.g., Shopee, Lazada, Grab, or similar)
Tech Stack
- Backend - TypeScript, Node.js
- Database - PostgreSQL (Aurora), Redis (ElastiCache)
- Messaging - Amazon SQS, SNS, with DLQ patterns
- Infrastructure - AWS EKS (Kubernetes), Terraform, GitHub Actions CI/CD
- Observability - Datadog (tracing, logging, dashboards, alerting)
- Frontend (Packing UI) - React, Vite, TypeScript
- Legacy (oversight) - .NET 6, .NET Framework 4.7.2, SQL Server, MongoDB
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