Fullstack Software Engineer

ABOUT US:

At Gradion, we are the strategic partner for ambitious businesses, helping them achieve breakthrough growth through Digital Innovation and Deep Tech.

With a global vision and an AI-first approach, we enable clients to reshape strategies, optimize systems, and adopt cutting-edge technologies to create sustainable value.

From AI and data to cybersecurity, robotics, and large-scale enterprise platforms, Gradion designs practical solutions that lay the foundation for the next generation of billion-dollar companies.

OUR FACTS & FIGURES:

- 23+ years of expertise — Gradion builds digital platforms & deep-tech solutions.

- 3 continents: Asia, Europe and Africa.

- 300+ specialists across 7 countries Vietnam, Singapore, Thailand, Saudi Arabia, Germany, Egypt, Indonesia.

- 100+ enterprise clients, including several unicorns (e.g., Alaiko, HomeToGo, Roadsurfer).

- Vietnam's Best IT Company – recognized by ITViec for 7 consecutive years, including 2 consecutive years of ranking # and 2025)

- ISO 27001.

ABOUT OUR CLIENT:

They are shaping the future of commerce by building an integration-first ecosystem that enables merchants to connect their systems effortlessly. As a Fullstack Software Engineer, you will work on the core application logic and backend architecture that power a visual workflow experience used to orchestrate integrations between internal services, event buses, and third-party systems.

This workflow builder serves as the orchestration layer of a next-generation integration platform — offering a visual, low-code interface (built with Vue + VueFlow) supported by a scalable backend built on , PostgreSQL, and Kafka/Red Panda. You will be responsible for refactoring and extending the backend, integrating real-time event-driven execution via the event bus, and embedding the solution as an application within the broader platform ecosystem.

This role is ideal for engineers who enjoy working across the full stack — designing reliable APIs, architecting scalable services, and collaborating closely with frontend engineers to deliver smooth, data-driven user experiences.

• Extend the Workflow Builder backend with new features, while also contributing to security hardening, optimization, code quality and architecture.
• Pair with frontend engineers on WebSocket/SSE endpoints for live workflow execution logs and real-time state updates in VueFlow.
• Extend event bus integration (NATS / Kafka / Red Panda) to support cross-service orchestration between Nexus and DataBus.
• Embed OpenTelemetry tracing, Prometheus metrics, and SLO dashboards for full observability.
• Introduce feature flags and remote configuration pipelines for safe rollouts and incremental feature releases.
• Manage CI/CD pipelines via GitHub Actions for linting, testing, Docker builds, and Helm chart deployments.

• 5+ years building production-grade cloud services, with 3+ years using VueJS and TypeScript.
• Strong experience designing REST and/or GraphQL APIs with type safety, versioning, and clear contracts.
• Proven expertise with Database schema design, migrations, and query performance tuning.
• Comfortable with containerised deployments, CI/CD automation, and modern DevOps tooling.
• Working knowledge of NodeJS and TypeScript to collaborate effectively with backend engineers using VueFlow.
• Strong security mindset (JWT/OAuth flows, RBAC, OWASP best practices, and secret management).
• Excellent verbal English communication.

• Familiarity with the Shopware App System, including manifests, permission scopes, and webhooks.
• Basic literacy in Go, useful when pairing with the DataBus backend team.
• Experience with event sourcing, CQRS, or serverless runtimes.
• Knowledge of observability and telemetry (OpenTelemetry, Prometheus, Grafana, DataDog).
• Prior work on low-code, workflow, or visual programming platforms.
• Familiarity with the Shopware 6 ecosystem or Meteor component library.
• Hands-on experience with message queues or event buses (Kafka, Red Panda, NATS, or Redis Streams) and delivery semantics (exactly-once, at-least-once).

• Backend: TypeScript 5 (Fastify-style modular server)
• Frontend: Vue 3 + VueFlow
• Streaming & Events: Kafka and Red Panda
• Event-Driven Architecture: Pub/Sub via NATS or Kafka clients
• CI/CD & Infrastructure: Docker, GitHub Actions
• Observability: OpenTelemetry, Prometheus, Grafana, DataDog
• Testing: Vitest (unit/integration), Playwright (for end-to-end flows)

Why you'll love working here?

Join Vietnam's Best IT Company – Gradion Vietnam (formerly NFQ Vietnam) was recognized by ITViec for 7 consecutive years, including 2 successive years as the Winner. Work with some of the best minds in the industry and be part of a company that's redefining how businesses scale through technology.

Career Growth & Leadership Development – Work closely with our leadership team, gain mentorship from experienced executives, and have direct exposure to high-level strategic decisions. Your growth is limitless, as long as you're ready to step up, opportunities will always be there for you.

Competitive Compensation – We believe great talent deserves great rewards. Expect an attractive salary, performance-based bonuses, and a benefits package that reflects your impact. We value talent over salary budgets - exceptional contributions deserve exceptional rewards.

And Many More Benefits to Explore But most importantly, a healthy work-life balance and an environment where you can thrive - professionally and personally. Including:

- A laptop is provided.

 - Community Tech activities.

 - A fun & dynamic environment and freedom to be creative.

 - Modern office with a flexible, relaxing zone.

 - Performance bonus (up to 2-month salary).

 - Performance review 2 times/ year.

 - Extra Premium Healthcare & Annual Health-check.

 - 15 days of annual leave.

Working time: Monday – Friday (9 AM - 6 PM)

Location:

- Ho Chi Minh office: Podium Floor, Sapphire 2 tower, 92 Nguyen Huu Canh Street, Thanh My Tay Ward, Ho Chi Minh City, Vietnam.      

- Da Nang office: 23rd Floor, G8 Golden Building, 65 Hai Phong, Hai Chau Ward, Da Nang City, Vietnam.

- Remote Work: Candidates based in Hanoi or Can Tho are welcome to work remotely.

According to General Data Protection Regulation (GDPR), Singapore's Personal Data Protection Act (PDPA), Indonesia's PDP Law 2022, and Vietnam's Decree 13/2023/ND-CP, while also ensuring compliance with other applicable local data protection laws in the jurisdictions where we operate, including but not limited to Vietnam, Indonesia, Thailand, Egypt, Singapore, Germany, and Saudi Arabia, Gradion applies the "Personal Data Protection Policy" to all candidates to ensure compliance with the laws.

By submitting your application to Gradion, you agree to allow us to process your provided information in accordance with the Personal Data Protection Policy that you have carefully read, understood, and agreed to in its entirety at Link.