Lead Backend C# Developer

Company; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

A tech startup studio in Singapore is seeking an experienced Lead Backend C# Developer to architect and maintain enterprise-grade portal solutions. The role focuses on developing robust backend systems for AI solutions and involves leading technical discussions and mentoring team members. The ideal candidate will have over 10 years of experience in backend development, strong proficiency in C#, and excellent communication skills to work with international clients. Join a collaborative team advancing innovative tech products.

Benefits

Opportunity to work on global projects

Diverse remote working environment

Annual training or learning credits

Collaborative culture and team support

Qualifications

• 10+ years of experience as a Backend Developer with strong proficiency in C#, C++, GO, or Java.
• Excellent written and verbal communication skills with ability to interact with international clients.
• Hands-on experience in both frontend and backend development.
• Proficient in relational database management systems and SQL.

Responsibilities

• Architect, develop, and maintain enterprise-grade backend services.
• Lead technical discussions and system design, and conduct code reviews.
• Develop RESTful APIs and ensure system-level design aligns with goals.

Skills

C# programming

Backend development

Microservices

SQL databases

Cloud services (AWS, Azure, GCP)

Containerization (Docker, Kubernetes)

Agile methodologies

Modern C++

Education

Bachelor's or Master's Degree in Computer Science, Computer Engineering, Information Technology, or related fields

Job description

singapore, Singapore | Posted on 02/02/2026

Slash is a hi-tech startup studio with a mission to build tech products that change the world. Our clients are global. In addition, we build and invest our own startups and commercialize them through joint ventures in ASEAN and Europe. We work on a wide-range of technologies: web, mobile, AI, blockchain, cloud, microservices & middlewares, security & infrastructure, etc.

Slash has headquarters in Singapore and community-oriented R&D hubs in Phnom Penh, Bali, Yogyakarta, Jakarta and Bandung. We are a team of 50+ entrepreneurs, engineers, hackers, and full-stack developers with unique capabilities in web, mobile, AI, and Blockchain.

Role and responsibilities, and how will the role impact Slash?

We are looking for an experienced Lead Backend C# Developer to join our Client’s Portal Team, responsible for developing our enterprise-grade portal solutions. This role involves architecting, implementing, and maintaining robust backend systems that power complex AI solutions for enterprise and government. You will bring a strong focus on good architecture and problem solving with system reliability and scalability in mind. You will be working with the latest technologies in a collaborative, agile, and professionally challenging environment

• Architect, develop, and maintain backend services of our enterprise-grade portal solutions.
• Take ownership of system-level design tasks and collaborate with frontend developers and other stakeholders to align backend solutions with overall system goals.
• Lead technical discussions and contribute to system design, architecture, and code reviews.
• Champion a culture of continuous learning, documentation, and knowledge sharing within the development team.
• Lead by example in producing clean, high-quality, reusable code following established best practices for scalability and security.
• Develop RESTful APIs and integrate with various third-party services and databases.
• Review and mentor developers on the use of best practices and code patterns.
• Perform unit testing and automated testing to ensure code quality and reliability.
• Diagnose, debug problems, and optimize performance bottlenecks in production environments.

Requirements

• Bachelor's or Master Degree in Computer Science, Computer Engineering, Information Technology, or related fields.
• Proactive, confident, doesn’t shy away from responsibility, takes full ownership, independence, inner drive to become successful.
• Excellent written and verbal communication skills. Ability to talk to international clients.
• Tech savvy (up to date with the latest trends), hands-on experience in both frontend and backend development, from development to deployment and operations.
• Ability to collaborate effectively in a cross‑functional team consisting of software engineers, DevOps, and other specialists. (e.g solution architects, product managers, scrum masters, developers, and client’s Team)
• Minimum 10+ years of experience as a Backend Developer with strong proficiency in a either C++, C#, GO, or Java.
• Some Modern C++ experience is strongly preferred.
• Solid understanding of enterprise‑level web applications.
• Strong understanding of relational database management systems (and SQL).
• Familiarity with cloud‑based deployments (Azure, AWS, or GCP) and containerization technologies like Docker or Kubernetes.
• Experience with automated testing frameworks is a strong advantage.
• Knowledge of modern agile software development principles and practices.
• Experience with any of the following would be considered a bonus:
• Microservices and message‑oriented architectures
• gRPC, or Message brokers like RabbitMQ or Kafka.
• Innovative, motivated, and a quick learner with a passion for solving complex technical challenges.
• Strong communication and teamwork skills, with the ability to work effectively in small, agile teams.
• A high degree of ownership and attention to detail, with a commitment to delivering robust and high‑quality software solutions.
• Adaptable and open to learning new technologies and processes.

Location: Due to the nature of the role, this position is open only to candidates based in Singapore (PR or citizen). Please note that visa sponsorship is not available for this role.

What do we offer?

• Projects/clients: Get the stability of a larger group and the excitement of a startup. Work on interesting global projects, challenges and technologies for top brands, fast‑paced startups and governments. Experience working with a mature SCRUM team and day‑to‑day Agile mindset project implementation.
• Team and working environment: Join our diverse remote builders' community and hubs oriented in Indonesia, Cambodia, Singapore, and Thailand. Experience an optimized remote working environment.
• At Slash, we're proud of our collaborative culture; everyone is ready to lend a helping hand, whether it's your first day on the job or your thousandth. We also embrace a trust‑centric culture, flexibility and accountability first, and a work‑life integration mindset.
• Learning: We focus on the growth of both parties. You will meet communities packed with intelligent peers and attend events with regular speakers, so you don't miss out on the latest tech trends. Slash is a safe space for people to share if you're passionate about something. Our favorite learning practices are the Growth Accountability Group, Mentoring Program, Venture Club, and Leadership. On top of your remuneration, you will get annual training or learning credits to be redeemed. We actively encourage everyone to suggest training beneficial for their professional growth.
• Technology: We work on a wide‑range of technologies: latest web and mobile technologies, AI, blockchain, latest Cloud services, microservices & middlewares, security & infrastructure, etc.

How do you apply?

Interested applicants are encouraged to submit your CV to [e-mail]