Backend Engineer

WavesReach; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

WavesReach is seeking a Backend Engineer to design and scale high-performance systems powering a global Checkout product and modern payments infrastructure.

You will build APIs and backend services for payments, settlement, asset conversion, identity, and multi-chain routing across web2 and web3 use cases, ensuring low latency and fault tolerance at scale.

Qualifications

• Production-grade backend systems experience with a modern language (TypeScript preferred).
• Distributed systems, API design, and database architecture expertise.
• Hands-on cloud infrastructure and containerization (AWS, Docker, Kubernetes).
• Strong CS fundamentals and effective English communication.

Responsibilities

• Design, build, and maintain high-performance APIs and backend services for the payments platform.
• Develop systems supporting payments, settlement, routing, asset conversion, and identity/security workflows.
• Build backend features to improve performance, reliability, and conversion for dApps and partners.
• Participate in system design, architecture discussions, and incident response for high availability.
• Write clean, tested code and contribute to reviews and best practices.
• Continuously optimize system performance, latency, and reliability across the infrastructure.

Skills

TypeScript

Go

Rust

Distributed systems

API design

Cloud infrastructure

Tools

AWS

Docker

Kubernetes

Job description

We are looking for a Backend Engineer to build and scale the high-performance systems powering a global Checkout product and next-generation payments infrastructure.

This role focuses on designing APIs, services, and distributed systems that handle payments, settlement, asset conversion, identity verification, and multi-chain transaction routing. You will play a key role in building fault-tolerant, low-latency infrastructure that supports both web2 and web3 use cases at scale.

Responsibilities:

• Design, build, and maintain high-performance APIs and backend services for the payments platform.


• Develop and evolve systems supporting payments, settlement, transaction routing, asset conversion, and identity/security workflows across multiple chains and providers.


• Build backend features that directly improve product performance, reliability, and conversion for dApps and partners.


• Participate in system design, architecture discussions, and incident response to ensure high availability, scalability, and fault tolerance.


• Write clean, maintainable, and well-tested code, contributing to code reviews and engineering best practices.


• Continuously optimize system performance, latency, and reliability across the infrastructure.

Requirements:

• Strong experience building production-grade backend systems using a modern programming language (TypeScript preferred; Go or Rust acceptable).


• Deep understanding of distributed systems, API design, and database architecture.


• Hands-on experience with cloud infrastructure and containerization tools (e.g., AWS, Docker, Kubernetes).


• Strong computer science fundamentals, including algorithms, data structures, and system design.


• Ability to communicate effectively in English (primary working language).

Nice to Have:

• Experience in payments, fintech infrastructure, or high-throughput transactional systems.


• Familiarity with blockchain technologies, smart contracts, or DeFi protocols.


• Experience with event-driven architectures and real-time data processing systems.


• Contributions to open-source projects or technical writing in backend, infrastructure, or crypto domains.


• Evidence of exceptional achievement in any domain (e.g., competitive programming, open-source, athletics).