Senior Staff Software Engineer

About Giao Hang Nang

GiaoHangNang (GHN) is GHN's fastest growing business unit focusing on heavy and bulky goods delivery, specializing in items weighing 20kg or more. The brand was developed in response to the growing need for transporting large volume and multi-piece goods. GHN Heavy operates under the motto "Heavy Goods, Light Wallet" (Hàng Nặng Ký, Giá Nhẹ Ví).

In just two years (since 2023), we have:

• Become the #1 e-commerce bulky delivery provider in Vietnam
• Processed 2-3 million bulky orders monthly
• Operated 1,000+ last-mile trucks and 100+ specialized bulky warehouses.
• Partnered with top platforms such as Shopee and TikTok

Building on this success, we are now expanding our service into the B2B transportation sector, aiming to become the #1 B2B logistics provider by upholding a standard of being PROFESSIONAL, REPUTABLE, and FLEXIBLE (Chuyên nghiệp - Uy tín - Linh hoạt). GHN Heavy officially launched its services at the Vietnam International Logistics Exhibition (VILOG 2025), where it served as the ONLY Diamond Sponsor, marking its expansion into the B2B logistics market.

About the Role

As a Senior Staff Software Engineer in the Freight team , you will be a technical leader building the core systems that power GHN Heavy's next growth engine: B2B transportation. You will design and deliver critical platform capabilities such as dispatch planning, linehaul/last-mile execution, capacity & fleet management, routing & scheduling optimization, real-time tracking, and operational control towers—with reliability and performance at scale.

This is a hands-on leadership role. You will own end-to-end outcomes: shaping architecture, writing production code, ensuring operational excellence (SLOs, observability, incident response), and mentoring engineers. You'll work closely with Product, Operations, Data, and other engineering teams to turn real-world constraints (vehicle types, hubs, cut-off times, service levels, traffic, depot capacity) into scalable software.

If you enjoy solving complex optimization and distributed-system problems that directly impact cost, delivery performance, and customer trust—this role is for you.

Responsibilities

• Development and implementation of logistics products include but are not limited to the first-mile, last-mile, warehouse, sorting, and transportation, …
• Design and implement route optimization algorithms (Multi-Depot Vehicle Routing Problem with Time Windows (MDVRPTW) or Two-Echelon Vehicle Routing Problem (2E-VRP)) to assign trucks and schedule goods transportation.
• Integrate the system with geographic data (GPS, Google Maps API) to calculate distances and travel times.
• Work with optimization libraries such as OR-Tools, Pyomo, or metaheuristic algorithms (Genetic Algorithm, Simulated Annealing). (nice to have)
• Build open API features for core logistics products
• Performance tuning, online incidents troubleshooting, and system refactoring
• Write high-quality, clean, and maintainable code using engineering best practices
• Work in an Agile & collaborative environment involving different stakeholders.

Requirements

• Bachelor's Degree in Information Technology, Computer Science, or equivalent.
• 4+ years of experience with full lifecycle of project development for Golang Applications
• Extensive experience in software design, architecture, development integration
• Knowledge of optimization algorithms (VRP, Genetic Algorithm, Ant Colony Optimization, etc.).
• Solid knowledge of event processing models, parallel programming, multi-threading, enterprise integration pattern, Socket, Web Service, and REST
• Proficient in distributed databases, and familiar with at least one NoSQL DB
• Distributed Caching such as Redis
• Familiar with Microservices, event-driven architecture.
• Good cross-team communication skills

The following skills would be nice to have

• Experience with mobile app (optional)
• Experience with big-data technologies such as Apache Kafka, and OLAP

• Knowing how to work with Docker, K8S or cloud services, e.g GCP, AWS... is a big plus

• 13th-month salary, performance bonuses, and KPI bonuses

• Health, Social, and Unemployment Insurance
• Health insurance
• Annual health checkup
• Annual salary reviews
• Annual team building/company trip
• Ongoing internal and external training opportunities.