Software Engineer

United States Digital Space LLC; Rotterdam; On-site; EUR 55,000 - 75,000; Full time

Job summary

United States Digital Space LLC is seeking an experienced Software Engineer to lead the architecture and development of international core systems supporting operations across Europe. You will be pivotal in driving technical decisions and building scalable solutions for supply chain management.

The ideal candidate will have extensive backend development experience, particularly with Java, along with strong system architecture skills and a commitment to high-quality coding standards. This role involves working in a dynamic environment across diverse projects.

Qualifications

• 5+ years of backend development experience with strong Java expertise.
• Proven experience designing architectures for large-scale e-commerce platforms.
• Strong knowledge of middleware and experience in high-availability environments.

Responsibilities

• Lead technical decision-making and architecture design for JD’s core systems.
• Design and oversee complex system architectures and maintain architectural quality.
• Provide technical leadership and mentor engineers.

Skills

Java expertise

Backend development

System architecture design

Problem-solving

Leadership

Education

Bachelor’s degree in Engineering, Computer Science, Mathematics or related field

Tools

MySQL

Redis

Kafka

Spring Boot

Job description

Who We Are

At the company, also known as JINGDONG, we are building one of the world’s most trusted technology and supply chain ecosystems. What started as a bold idea in China has evolved into a NASDAQ-listed, Fortune 44 global enterprise serving over 700 million active customers. Powered by advanced logistics, innovative technology, and a commitment to integrity, the company operates across retail, logistics, technology, property and more, creating solutions that make everyday life smarter, faster, and more connected.

Our Global Reach

the company is expanding its international footprint through a digitally intelligent, cross-border supply chain and world-class logistics network, supported by platforms such as Joybuy, which brings trusted products to customers worldwide. Today, our teams operate across China, the U.S., U.K., Netherlands, France, Germany, Spain, Brazil, Hungary, Japan, South Korea, Australia, Thailand, Vietnam, Malaysia, Indonesia, Saudi Arabia, the UAE and beyond, reaching customers in every corner of the world.

Learn more about who we are and what we do: https://corporate.the company/

What We Offer

Joining the company means becoming part of a company where people, innovation, and impact go hand in hand. We offer a competitive salary, a great location, and a supportive, people-first culture where your growth truly matters. With access to global projects, learning opportunities, and an inclusive environment that values every voice, you’ll have the space to shape the future with us.

About The Team

You’ll be joining the the company team, which values collaboration, ownership, and a commitment to delivering high-quality results in a fast-paced, dynamic environment.

the company is seeking an experienced Software Engineer to lead the architecture and development of our international core systems supporting the operation centres in European countries such as the UK, France, Germany, and the Netherlands. In this role, you will drive key technical decisions, ensure system excellence in high-concurrency and high-availability environments, and work closely with suppliers, merchandisers, and product management teams to build scalable, secure, and globally integrated solutions for product listings, inventory, and supply chain management in a dynamic international landscape.

Key Responsibilities:

• Lead technical decision‑making and architecture design for JD’s international core systems, ensuring high standards of performance, availability, concurrency, security, and scalability.
• Design and oversee complex system architectures and drive productization efforts, maintaining architectural quality through hands‑on coding, continuous performance evaluation, and system optimization.
• Architect and develop backend services using Java and Spring Boot, establishing engineering best practices and reusable technical frameworks.
• Build and maintain backend systems for JD’s operation centres, ensuring seamless integration across global infrastructure.
• Identify, assess, and mitigate technical risks throughout project implementation, covering monitorability, maintainability, grey release strategies, and rollback capabilities.
• Research, evaluate, and promote new technologies and methodologies, identifying integration opportunities within global architectures to strengthen the team’s technical capability and architectural foresight.
• Provide technical leadership, mentor engineers, and continuously optimize team collaboration and engineering best practices.
• Work onsite in London, UK.

Minimum Qualifications:

• Bachelor’s degree in Engineering, Computer Science, Mathematics, or a related technical field.
• 5+ years of backend development experience with strong Java expertise, including JVM fundamentals, concurrency, multithreading, and performance tuning.
• Proven experience designing architectures for large‑scale e‑commerce platforms; international system experience preferred.
• Strong server‑side architecture skills with solid knowledge of middleware such as MySQL, Redis, Kafka, and distributed systems in high‑availability, high‑concurrency environments.
• Excellent coding standards with a passion for technology and open‑source learning.
• Strong analytical, problem‑solving, and learning abilities with a proactive mindset.
• Demonstrated team leadership experience and effective communication skills in both Chinese and English.

Preferred Qualifications:

• Work experience in large‑scale ecommerce companies.
• Experience in supply chain, fulfilment, logistics, or marketing systems.
• Experience in UK and European business.

the company is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

*At the company, we’re committed to building a diverse and inclusive workplace where everyone can thrive. We’re proud to be an equal opportunity employer and make all employment decisions without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, disability, age, veteran status, or any other protected characteristic.*