.NET Core Backend Engineer Junior

  • Full-time
  • TECH
  • Hanoi


Crossian is a high-growth technology-driven e-commerce business. Behind our success is our people. As a start-up formed in 2020, we have created a fast-paced and dynamic environment, enabling our people to reach a cumulative average growth rate of over 400% in just under 3 years. Our mission now is to build direct-to-consumer brands and increase customer LTV.

As part of Technology Innovations CoE - supervised by the Engineering Manager & advised by the firm's CTO, you'll also check in with the team daily on the project, collecting information from other products to remain in sync with the entire eco-system in an Agile mindset & strong-Tech Startup environment culture. (Silicon Valley style Tech-startup).

We are creating a comprehensive Cross-border eCommerce Platform that features solutions for Storefront, Payment Gateway, Inventory, Catalogs, Logistics, Marketing Insights, CRM... Here are some examples:

  • Develop a Storefront solution
  • Centralize payment gateways for managing transactions and after payment business (such as: refund, chargebacks, claims, inquiry,..)
  • Integrate various 3rd services to operate a complete supply-chain system including inventory, catalogs, logistics tracking, and more...
  • Convert raw data from marketing campaigns, transactions, user behavior, etc. into insights beneficial and significant for business operations.
  • Plus, numerous other opportunities await your input.

In addition to development tasks, collaboration with other firm’s CoE is crucial to comprehend issues within their specific sectors. Thus, from a technical standpoint, you will propose solutions to help them improve consistently every day.


  • Participate in Requirements Analysis & Technical Specification in Agile/Scrum development process
  • Develop clean, scalable code using .NET Core in Micro-service Architecture & Cloud-native
  • Develop backend Data-storage & Data-flows with Postgres, ES, Kafka and various Cloud data toolset
  • Test and deploy system (micro-)services & (micro-)apps on AWS EKS/Kubernetes with Docker toolset
  • Improve existing system: revising, updating, refactoring and debugging code
  • Develop documentation throughout the software development life cycle (SDLC)
  • Serve as an expert on the system and provide technical support to other Internal teams


  • Bachelor’s degree in computer programming, computer science, or a related field
  • At least 6 months of development experience
  • C#, .NET, .NET Core, ASP.NET Core, Entity Framework Core, LINQ
  • Relational database modeling & design with Postgres
  • Knowledge of Microservices, SOLID principles

Preferred (but not required)

  • Document DB modeling & design with Elasticsearch
  • Message Queues with KAFKA & Message Queue
  • Understanding of Agile/Scrum methodologies
  • Knowledge Clean-code, Clean-Architecture
  • Having experience in Cloud Native Computing
  • DevOps, SysOps in AWS and Git CI/CD experience 
  • HTML5/CSS3, JS/Typescript, React.js/Vue.js, Node.js
  • English proficiency


At Crossian, our people are the key to our success. We believe in creating an attractive total compensation package (TCP) that not only retains employees but allows them to excel in their profession. These include:

  • Competitive salary (negotiable depending on what you bring to the table)
  • Full salary during probation
  • 20 days work-from-home & 12 days of paid annual leave
  • Global health insurance package for yourself
  • Guaranteed 13th month salary
  • Quarterly bonus & Year-end bonus as part of our profit sharing program
  • A Pantry & a Crossian Cafe stocked with goodies, ready to serve
  •  Lots of other company benefits including 5-star annual Summer Summit, budget for frequent team building activities and other monthly / quarterly / annual company events
  • General company T&D Program
  • Other benefits in accordance to Company's Policy and Vietnam Labor Laws