Senior Backend Developer

ABOUT SIOUX Sioux Group was founded in 1996 in the Netherlands. With over 1,400 engineers, Sioux supports or acts as the R&D partner of leading high-tech companies. We aim to add value to our clients by developing innovative and high-tech solutions that contribute to a smarter, safer, healthier, more enjoyable, and more sustainable society. Sioux has been recognized as an employer of choice, including awards such as Best ICT Company to Work For and Great Place to Work. In addition to our strong presence in Europe, Sioux is rapidly expanding in Asia, with offices in Vietnam, China, Singapore, and India. With a strong heritage and a diverse international team, Sioux is proud of our core values: Own it and make it happen, Grow and innovate together, and Surprise customers. If these values resonate with you, we would love to welcome you to our team. WE ARE LOOKING FOR SENIOR BACKEND DEVELOPER BASED IN DANANG/HCM TO JOIN US! The ideal candidate is mainly in charge of building and maintaining C#/Python software that controls machines and subsystems within complex diagnostic equipment — this is embedded/systems-adjacent software engineering, not pure application backend. Key responsibilities: Design, implement, and maintain high-performance C#/ Python software components for machine and subsystem control within complex systems. Be part of a Kanban team delivering high-quality, maintainable software. Review and improve code quality through thorough code reviews and mentoring of other developers. Troubleshoot, analyse, and resolve complex software and system issues. Integrate software with hardware and control systems, ensuring efficient and reliable machine operations. Define and implement best practices in software design, testing, and documentation. Contribute to continuous improvement initiatives for software processes, performance, and usability. Software & System Troubleshooting Experience with Software installation, system setup, and configuration Diagnose and resolve issues across Windows- and Linux-based environments. Analyze system performance (throughput, latency, CPU, memory usage). Troubleshoot across software and hardware interfaces (controllers, sensors, stages). Work with logs, telemetry, and monitoring tools to identify root causes. Profile: Master's or Bachelor’s Degree in Computer Science, Software Engineering, Information Technology, or a related discipline. Minimum 5 years of experience in Backend Development with one of following programming languages, such as C#, Python, .NET Strong grasp of object-oriented design principles and scalable architecture. Proficient with multi-threaded and asynchronous programming. Familiarity with CI/CD pipelines, containerization (Docker), and orchestration tools (Kubernetes). Proficient understanding of GIT for versioning. Strong debugging, problem-solving, and optimization skills. Affinity with hardware and physical systems is a strong plus. Good command of spoken & written English. WHAT DO WE OFFER FOR YOU? Compensation & Benefits Attractive salary 13th-month salary depending on the employee’s length of service Project Bonus (twice per year) Social Insurance is based on government regulations Full salary during probation Salary reviews: 1 time/year & Promotion opportunities: 2 times /year 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 Well-being 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 [email protected] 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 If you don't find a job matching you, do not hesitate to send your CV to our email: [email protected] . We are interested in thinking together with you about other job options If you know someone who fits this position, please feel free to share this! We hope to meet you soon at Sioux. Cheers!