# Senior Software Engineer (App Integration)

**Company:** [Makro PRO](http://jobs.workable.com/companies/1cWkogd8purSPWZfcuHmCe.md)
**Location:** Suan Luang, Thailand
**Workplace:** hybrid
**Employment type:** Full-time
**Department:** Technology

[Apply for this job](http://jobs.workable.com/view/eb05cba8-df40-4bed-aac0-9f410d21ec3e)

## 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