2 375 Back End Developers jobs in Vietnam

Our client is seeking a talented and motivated Software Engineer specializing in backend development to join their innovative team. This role is based in Thai Binh, Thai Binh, VN . As a Backend Software Engineer, you will be instrumental in designing, developing, and maintaining robust and scalable server-side applications. Your responsibilities will include writing clean, efficient, and well-documented code, developing APIs, and integrating with databases and third-party services. You will work closely with frontend developers, product managers, and other stakeholders to translate business requirements into technical solutions. Key tasks involve database design and optimization, implementing security and data protection measures, and ensuring the performance and reliability of our backend systems. The ideal candidate will possess strong programming skills in languages such as Java, Python, Node.js, or similar, along with experience in building and consuming RESTful APIs. Familiarity with cloud platforms like AWS, Azure, or GCP, and containerization technologies such as Docker and Kubernetes, is highly beneficial. Experience with agile development methodologies, version control systems (like Git), and CI/CD pipelines is also important. We are looking for individuals who are passionate about technology, enjoy tackling complex challenges, and are committed to delivering high-quality software. A collaborative spirit and excellent problem-solving abilities are essential for success in this role. If you are a driven engineer looking to contribute to cutting-edge projects in a collaborative environment, we encourage you to apply.

Would you be excited to drive major changes to a scale service that is critical to the company? Substrate is the data and intelligence platform that enables internal partner teams at Microsoft to build, deploy, and maintain compliant productivity apps and services with reduced effort and faster time to market. We work closely with partners across M365 to enable critical suite-wide scenarios.
The Substrate Core Substrate team powers the infrastructure that underpins Microsoft 365's most critical services and Copilot. We are a high-impact, forward-looking team focused on building intelligent, scalable, and cost-efficient platforms that enable Microsoft to deliver world-class productivity experiences to billions of users. Our mission is to drive operational excellence and innovation across the M365 fleet by leveraging AI, automation, and deep platform integration.
We are looking for a passionate and growth-oriented **Software Engineer** to join our team in building a platform that drives financial accountability and operational efficiency across Microsoft's shared infrastructure. This role offers an opportunity to work on impactful systems that enable M365 Copilot. This system aims to help us deliver the platform that makes Copilot innovation fast, reliable, and regression-free.
Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
**Responsibilities**
+ Create and implement code for a product, service, or feature, reusing code as applicable.
+ Work with appropriate stakeholders to determine user requirements for a set of features.
+ Contribute to the identification of dependencies, and the development of design documents for a product area with little oversight.
+ Contribute to efforts to break down larger work items into smaller work items and provide estimation.
+ Remains current in skills by investing time and effort into staying abreast of current developments that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale.
**Qualifications**
**Required Qualifications:**
+ Bachelor's Degree in Computer Science, or related technical discipline with proven experience coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR equivalent experience.
+ Experience building backend systems, including API design and implementation.
+ Familiarity with cloud platforms.
+ Experience working with LLMs and prompt engineering.
+ Understanding distributed systems, data pipelines, or telemetry platforms is a plus.
+ Exposure to data visualization tools (e.g., Power BI, Grafana) is a bonus.
+ Solid communication skills and a collaborative mindset.
**Other Requirements:**
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:
+ Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.
**Preferred Qualifications:**
+ Bachelor's Degree in Computer Science
+ OR related technical field AND 1+ year(s) technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR Master's Degree in Computer Science or related technical field with proven experience coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR equivalent experience.
#M365CORE
Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations ( .

M365 Big Data Optimization team is hiring a **Software Engineer** to work on big data efficiency improvements for M365 worldwide.
Hundreds of millions of global customers use M365 products every day. The engineering, telemetry and signals, datasets behind this are at world's largest scale: 800+ PB storage and a million CPU cores. There are various kinds of data platforms and systems working with each other to deliver efficient services. We provide large scale and unified datasets, span our portfolio for M365 world-class products and applications, collaborate with data scientists/product teams/sales/marketing teams to gain more product insights, maximize customer value, and reduce cost.  
Our team manages this huge and critical big data capacity and platform, we continuously optimize this giant storage & processing resources for M365 worldwide. We have achieved 200 million dollars cost reduction in the past few years and have accumulated a wealth of technical experience in distributed storage and processing fields. By joining us, you will also become experts on big data efficiency, and share your best practices with thousands of M365 engineers all over the world. There are lots of opportunities and challenges that you can show your passion and talents in big data, improve the efficiency and reliability of the systems, pursue engineering excellence, and make tremendous influence!
Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
**Responsibilities**
+ Design and build highly efficient, lower cost dataset for storage and pipeline for processing.
+ Research, analyze, and investigate optimization opportunities on Office365 Big Data platform.
+ Ensure Office365 capacity stay in allocated quota by optimization in both storage and processing.
+ Design tools, analyze and leverage data mining, generate BI reports to improve the efficiency of data capacity & resource management.
+ Leverage AI technologies/tools to enhance work efficiency-applying machine learning and intelligent automation to streamline processing and uncover optimization opportunities.
**Qualifications**
**Required Qualifications:**
+ Bachelor's Degree in Computer Science, or related technical discipline with proven experience coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR equivalent experience.
+ Solid Computer Science fundamentals.
+ Solid coding skills (no language restrictions).
+ Experience on design/development with C#/SQL Server/ASPX/JavaScript/Azure.
+ Quick learning and solid problem solving, design, coding, and debugging skills.
+ Communication in English: reading, writing, listening, and speaking.
+ Cross-team collaboration skills.
+ Accountable and proactive.
+ Data pipeline and optimization knowledge is a plus.
+ Experience with distributed system is a plus.
+ Experience or strong interest in leveraging AI to improve engineering efficiency, such as automating workflows, enhancing tooling, or identifying optimization opportunities.
**Other Requirements:**
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:
+ **Microsoft Cloud Background Check:** This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.
**Preferred Qualifications:**
+ Bachelor's Degree in Computer Science
+ OR related technical field AND 1+ year(s) technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR Master's Degree in Computer Science or related technical field with proven experience coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR equivalent experience.
#M365Core
Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations ( .

Office Data Loader team is hiring a **Software Engineer** to build one of the most largest hyper-scale data ingestion service in the world for Office365 services.
With hundreds of millions of users using Office365 services, huge amount of data are generated every day. Data is mission critical for Office365 services. It helps engineering teams to understand the quality of live services, generate insights of feature usage and user behavior, troubleshoot bugs and issues. It also offers better visibility to product and management teams on business impacts, empowers product and scientist teams to build intelligence features.
To support the continuously growth of business needs from Office365, Office Data Loader team builds the hyper-scale distributed data ingestion service. We directly manages the ingestion service on more than 300,000 Exchange Online machines, which upload more than 30,000 TB data to our hyper-scale distributed storage every day. We also support the ingestion service running on even more machines for other Office365 products.
As the fundamental data ingestion service, we play an incredibly important role to make sure data uploading meet the privacy and compliance requirements. Sensitive data needs to be transformed to prevent privacy leaks or ne. Moreover, privacy leak detection and resolution are also built by us as the safeguard. User data that empowers Machine Learning scenarios has even higher requirements on the design of our service. Privacy and compliance are always our top priority, because Microsoft runs on Trust!
Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
**Responsibilities**
The quality of the service means a lot for the success of Office365 services. You will have plenty of opportunities to take on challenges to achieve high uploading completeness (>99.9%) and make sure privacy and compliance requirements are always met.
+ Design and build high quality, performant and reliable distributed ingestion service.
+ Design and build modernized telemetry/monitoring/reporting systems to get the insights of service quality.
+ Improve service performance and efficiency to reduce COST of service.
+ Work with downstream data consumer teams in different geo locations to onboard data ingestion service, and provide supports in daily work.
+ Work with privacy & compliance teams to design and build solutions to prevent/detect/resolve privacy issues, also provide guidance and best practice for engineering teams within Office365.
+ Responsible for the daily operations and maintenance of the live service and ensure quality of service.
+ Collaborate with other Office365 teams to manage their data ingestion service, provide solutions and guidance.
**Qualifications**
**Required Qualifications:**
+ Bachelor's Degree in Computer Science, or related technical discipline with proven experience coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR equivalent experience.
+ Solid coding skills (No requirements on certain language, assuming the candidate can demonstrate fast learning).
+ Solid Computer Science fundamentals.
+ Solid problem analysis and solving skills.
+ Solid communication skills. (Good written English, Avg+ oral English).
+ Passionate to solve hard problems.
+ Passionate to learn new skills/knowledge.
+ Knowledge and experience of distributed system, large-scale big data platform technologies is a plus.
+ Knowledge and experience of performance tuning is a plus.
+ Knowledge and experience of data privacy is a plus.
**Other Requirements:**
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:
+ Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.
**Preferred Qualifications:**
+ Bachelor's Degree in Computer Science
+ OR related technical field AND 1+ year(s) technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR Master's Degree in Computer Science or related technical field with proven experience coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR equivalent experience.
#M365Core
Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations ( .

**What you will do**:

- Build a Data Management Platform to help Advertisers, Marketers, Advertising Agencies identify and segment their audiences by gender, age, location, interest, occupation,for effectively targeting them on Zalo ecosystem’s products such as Zalo, Zing News, Báo Mới, Zing MP3, Zing TV, ;
- Work on big data platform related to advertising business;
- Deploy, monitor and scale microservices to make sure availability and reliability;
- Write clean and maintainable code.

**What you will need**:

- At least 1-year experience in Java and JavaScript (Experienced in Angular framework is a plus);
- Solid knowledge of Data Structures and Algorithms, OOP;
- Good understanding of Database: both SQL and NoSQL;
- Experience working in Unix/Linux environment;
- Be willing to learn and adapt to new technologies;
- Good at logical thinking and problem-solving skills;
- High responsibility and teamwork spirit.

**What you will do**:

- Handle backend Database for Zalo ecosystem’s products such as Zalo, Báo Mới, Zing MP3, ;
- Working cross-team in implemented projects or collecting requirements for further development;
- Involve in technologies evaluation and selection if needed to implement new solutions;
- Participate in the design, development and implementation of new features and various supporting tools as required;
- Learn more about tech stacks, programming languages, internal DBs & frameworks;
- Research new technologies and learn to develop high-load, low-latency services and deliver high availability and performance.

**What you will need**:

- Experienced in C/C++ is required;
- Familiar with Java or Python programming language is a plus;
- Solid knowledge of Data Structures and Algorithms;
- Good at logical thinking and problem-solving skills;
- Be willing to learn new technologies and programming languages;

**_Nice to have:_**
- Familiar with network protocols (TCP, UDP, HTTP) and socket programming is a plus;
- Good knowledge in Linux is a plus;
- Familiar with in-memory and NoSQL databases is a plus;
- Experienced in asynchronous programming is a plus.

**What you will do**:

- Build a Data Management Platform to help Advertisers, Marketers, Advertising Agencies identify and segment their audiences by gender, age, location, interest, occupation,for effectively targeting them on Zalo ecosystem’s products such as Zalo, Zing News, Báo Mới, Zing MP3, Zing TV, ;
- Work on big data platform related to advertising business;
- Deploy, monitor and scale microservices to make sure availability and reliability;
- Write clean and maintainable code.

**What you will need**:

- At least 1-year experience in Java and JavaScript (Experienced in Angular framework is a plus);
- Solid knowledge of Data Structures and Algorithms, OOP;
- Good understanding of Database: both SQL and NoSQL;
- Experience working in Unix/Linux environment;
- Be willing to learn and adapt to new technologies;
- Good at logical thinking and problem-solving skills;
- High responsibility and teamwork spirit.

**What you will do**:

- Handle backend Database for Zalo ecosystem’s products such as Zalo, Báo Mới, Zing MP3, ;
- Working cross-team in implemented projects or collecting requirements for further development;
- Involve in technologies evaluation and selection if needed to implement new solutions;
- Participate in the design, development and implementation of new features and various supporting tools as required;
- Learn more about tech stacks, programming languages, internal DBs & frameworks;
- Research new technologies and learn to develop high-load, low-latency services and deliver high availability and performance.

**What you will need**:

- Experienced in C/C++ is required;
- Familiar with Java or Python programming language is a plus;
- Solid knowledge of Data Structures and Algorithms;
- Good at logical thinking and problem-solving skills;
- Be willing to learn new technologies and programming languages;

**_Nice to have:_**
- Familiar with network protocols (TCP, UDP, HTTP) and socket programming is a plus;
- Good knowledge in Linux is a plus;
- Familiar with in-memory and NoSQL databases is a plus;
- Experienced in asynchronous programming is a plus.

**What you will do**:

- Handle backend Database for Zalo, ZingMP3, ZingNews, Báo Mới
- Working cross-team in implemented projects or collecting requirements for further development;
- Involve in technologies evaluation and selection if needed to implement new solutions;
- Participate in the design, development and implementation of new features and various supporting tools as required;
- Learn more about tech stacks, programming languages, internal DBs & frameworks;
- Research new technologies and learn to develop high-load, low-latency services and deliver high availability and performance.

**What you will need**:

- Experienced in C/C++ is required;
- Familiar with Java programming language is a plus;
- Solid knowledge of Data Structures and Algorithms;
- Good at logical thinking and problem-solving skills;
- Be willing to learn new technologies and programming languages;

**_Nice to have:_**
- Familiar with network protocols (TCP, UDP, HTTP) and socket programming is a plus;
- Good knowledge in Linux is a plus;
- Familiar with in-memory and NoSQL databases is a plus;
- Experienced in asynchronous programming is a plus.