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OnePAY HN

BIDV Tower, 194 Tran Quang Khai, Hà Nội

Company Size : 25-99

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Job Summary

  • 25-99
  • Product
  • Việt Nam

Senior Software Developer

OnePAY HN

  • Hoàn Kiếm, Hà Nội
  • Negotiable
  •  Full Time
  •  English
  •  Experienced (Non-Manager)
1
1

  •  Posted:03/07/2026

  • Apply now
Senior Software Developer
Apply now
Technical Skill: Java , Golang , AngularJS , Git , System Design , NoSQL , MS SQL , Docker , Data Modeling , Architecture , DevOps , VueJS , Kubernetes , Microservices , RESTful API , CI/CD

Job description

Overview of job

We are looking for a Senior Java/Golang, Angular/VueJS Developer to be part of our expanding team. Your main goal is to oversee the development of products within the FinTech and Payments processing industry. 

As a Senior Developer, your responsibilities will be: 

  • System Design, develop, and maintain robust, high-quality software applications using Java, Golang, or Angular, VueJS.
  • Take lead and collaborate with cross-functional teams to analyze requirements, define technical solutions, and deliver new features.
  • Review & ensure code quality by writing unit tests, performing code reviews, and enforcing development best practices.
  • Optimize performance and scalability across distributed systems and complex environments.
  • Identify, troubleshoot, and resolve complex technical issues efficiently and proactively.
  • Provide technical leadership and mentorship to junior and mid-level developers, fostering a culture of continuous improvement.
  • Lead & drive the team to adopt and follow Agile/Scrum practices effectively.
  • Contribute to system architecture discussions and long-term product/system roadmap planning.
  • Stay current with emerging technologies and trends in FinTech, Payments, and modern software development practices.
  • Competitive salary, negotiable based on competence
  • Performance-based bonuses twice a year, depending on KPI and company business results
  • In addition to 12 annual leave days as per labor law, additional paid summer leave based on seniority
  • Health insurance for employees and family members
  • Participation in company-organized team-building programs and annual community activities
  • Working schedule: Monday – Friday, plus 2-3 Saturday mornings per month
  • Opportunities to join internal training and development programs
  • Full benefits including social insurance (SI), health insurance (HI), unemployment insurance (UI), annual health check-ups, and other benefits as per company policies and labor law regulations.

Job Requirement

  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
  • 5+ years of professional experience in software development.
  • Strong proficiency in Java or Golang for backend development and/or Angular/VueJS for frontend development.
  • Experience with RESTful APIs, microservices architecture.
  • Solid experience in system design.
  • Solid understanding of database programming (SQL and NoSQL) and data modeling.
  • Knowledge of DevOps practices, Git, CI/CD pipelines, and containerization (Docker/Kubernetes) is a plus.
  • Excellent problem-solving skills and attention to detail.
  • Strong communication skills and ability to work collaboratively in a team environment.
  • Experience with AI coding tools is a plus.
  • Speaking, Writing and Reading English is preferred.

Languages

    • English

    • Speaking: Intermediate - Reading: Intermediate - Writing: Intermediate

Technical Skill

  • Java
  • Golang
  • AngularJS
  • Git
  • System Design
  • NoSQL
  • MS SQL
  • Docker
  • Data Modeling
  • Architecture
  • DevOps
  • VueJS
  • Kubernetes
  • Microservices
  • RESTful API
  • CI/CD

COMPETENCES

  • Professional Experience
  • Problem Solving Skills
  • Detail oriented
  • Communication Skills

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BUSINESS PROFILE

OnePAY is the representative of MasterCard (MiGS) in providing the online payment solutions to the Vietnam. OnePAY Payment Gateway meets the standards of the payment card industry such as PCI DSS of PCI Security Standards Council, 3D-Secure of Visa, MasterCard and JCB …. OnePAY is also cooperating more than 10 biggest banks of Vietnam in the diversified deployment of non-cash payment channel.

OnePAY is now leading in the payment market. From online international card (CNP) processing, OnePAY is gradually expanding the electronic payment channel including the payment via ATM, POS, Internet Banking, SMS banking …. by the connections with all banks in Vietnam. OnePAY incessantly expands the service to provide all instruments, electronic commerce business solutions to Vietnam and Indochina market.

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