.NET Developer (Middle/Senior level)

Job Description

Sioux Group was founded in 1996 in the Netherlands. With over 1100 engineers, Sioux supports or acts as the R&D department of leading high-tech companies. Sioux aims to add values to its clients and build innovative solutions that can contribute to a smarter, safer, healthier, more enjoyable and more sustainable society. Sioux has been rewarded as an employer of choice: Best ICT company to work for and great place to work with.

At Sioux, we strive for Culture of Excellence and grow our employees with challenging projects.As a Software Engineer at Sioux, you’ll have the opportunity to work with clients who are giant tech corporations all over the world (English-based projects).

We bring high-tech to life together with a team of driven engineers!


Your focus will comprise

  • Participate in project’s requirements analysis
  • Collaborate with internal & international teams to produce software design and architecture
  • Write clean, scalable code using .NET programming languages
  • Test and deploy applications and systems
  • Revise, update, refactor and debug code
  • Improve existing software
  • Develop documentation throughout the software development life cycle

Job Requirements


  • Bachelor in Information Technology or Computer Science or related fields
  • +3 year experiences as .Net Developer with C# programming language
  • Good English skills, working directly with international clients


  • Deep knowledge of OOP, S.O.L.I.D, OOD, Design Patterns, SQL performance, and Threading
  • Familiarity with WPF, MSSQL, .Net Core, R.E.S.T API, Jenkins CI

Soft skills:

  • Good sense of teamwork, high responsibility & commitment
  • Strong logical thinking, proactive and open-minded learning attitude


  • High-tech: Apply the latest technology and make life better through technology
  • Challenging Projects: work with global clients who are giant tech corporations. Building large-scale and global software development products
  • Growing Opportunity: Work with top-notch experts from around the world
  • Our value: H - O - T (Honest, Open, Transparent)


    Compensation & Benefits

    • Attractive salary
    • 13th-month salary depending on the employee’s length of service
    • Project Bonus based on performance (twice per year)
    • Government Social Insurance is based on full of gross salary
    • Full salary during probation

    Working hours & Leave

    • Flexible working hours working Monday – Friday, no OT
    • Hybrid working policy
    • 19 leave days per year, for every 3 work years, +1 day to annual leave


    • Sioux Care Package: Each employee is eligible for an assigned package (based on grade and length of service) up to VND 30,000,000/ employee/ year for well-being benefits, including Premium insurance for employee and family, Annual Health Check, Personal Development, Children’s Education, Support subscription & WFH Equipment

    Training & Development

    • Company-sponsored training: soft skills/ technical skills/ hot-trend technologies/ best practices/English etc
    • Onsite opportunities: long-term or short-term at other Sioux offices and client’s destination overseas (where applicable)

    Work anniversary bonus

    • 1st anniversary = 1 million
    • 3rd anniversary = 3 million
    • 5th anniversary = 10 million
    • 10th anniversary = 20 million

    Social activities

    • Diverse company culture activities: Company trip, Annual Year End Party, Quarterly party, Company outings, Team building, Lunch & Learn Company anniversary, Family day, X-Mas party, Mid-Autumn, Snack Friday, Food and Snack in the fridge, etc
    • Sports activities: Football & Badminton club
    • Charity social responsibility activities

HOW TO APPLY? You can apply by sending your CV to ngoc.nguyen@sioux.asia

  • Our notes for your job application:
  • We love to receive your CV in English.
  • We will contact you (for the ones matching our criteria) within 2 weeks of your application date.
  • In case you don't find a job matching you, do not hesitate to send your CV to our email: ngoc.nguyen@sioux.asia We are interested in thinking together with you about other job options.

If you know someone perfectly fit for this position, please feel free to share this!

We hope to meet you soon at Sioux. Cheers!