Full Stack Engineer

FULL STACK ENGINEER | NODE.JS / GOLANG + REACT / NEXT.JS
Location: Ho Chi Minh City - Onsite
Experience: 3+ years
Employment: Full-time
Company: NewEra Inc.
ABOUT THE PROJECTNewEra is building a smart retail ecosystem deployed in real production environments across supermarket chains and retail locations within a major partner ecosystem.
Our products include
Retail Media Network (RMN)
Digital advertising screens integrated with AI cameras to measure audience and attention, with campaign management, content distribution and performance reporting for brands.
Vending Machine
Automated fresh-food vending systems covering ordering, payment, cold-chain telemetry, inventory management and replenishment.
Smart Cooler AI
Computer-vision-powered smart coolers that recognize products and customer grab-and-go behavior, combined with automated payment.
This is real production infrastructure running across distributed IoT devices, real payment transactions and real-time data - not a demo product.
WHAT YOU'LL DOBackend - 60%
Build REST/gRPC APIs for admin applications, edge devices and partner integrations.
Process analytics pipelines from AI camera events → aggregation → campaign performance reports.
Ensure transaction accuracy and reconciliation with payment gateways.
Frontend - 40%
Build management dashboards for advertising CMS, device fleet monitoring, campaign reporting and inventory operations.
Develop UI for advertising displays and vending machine devices when required.
System & Engineering
Work with the Tech Lead on architecture, API contracts and data models.
Write technical documentation and unit tests for critical business logic such as payment and reconciliation.
Collaborate with embedded/hardware teams to define device ↔ server protocols.
REQUIREMENTS
3+ years of experience developing full-stack production systems.
Strong backend experience with [protected info] (NestJS) or Golang.
Strong frontend experience with React/[protected info] + TypeScript.
Solid understanding of REST API design, OAuth2/JWT, rate limiting and idempotency.
Strong knowledge of PostgreSQL and Redis.
Experience with message queues / event-driven systems such as Kafka, RabbitMQ or MQTT.
Proficient with Git, Docker, testing and CI/CD.
Good system thinking and understanding of consistency/availability trade-offs.
Experience designing systems that can handle unreliable networks, retries and distributed IoT devices.
NICE TO HAVE
Payment / fintech / e-wallet experience.
AdTech / Retail Media Network experience.
Experience with impression/attention measurement and campaign reporting.
Experience integrating Edge AI, RKNN, Jetson or computer vision events.
Android/Kotlin or WebView experience for signage devices.
Experience with ERP integrations, inventory and order management.
WHY THIS PROJECT?You'll work on a system where software meets AI, IoT, payments and physical retail - with real devices, real transactions and real users.
If you're a Full Stack Engineer who enjoys solving distributed-system and real-world engineering problems, we'd love to hear from you.
📩 Interested? Send me your CV via DM or comment below.
#Hiring #FullStackEngineer #NodeJS #Golang #ReactJS #NextJS #TypeScript #IoT #AI #Fintech #RetailTech #SoftwareEngineer #NewEraInc