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IO Tech Solutions Limited

Senior Low Latency Java Developer

RemoteAPACSenior

Senior engineer on a crypto trading technology team building next-generation trading systems in low-latency server-side Java — spanning order management, market connectivity, and price distribution on Linux. Core stack: Java, concurrency/multithreading, performance profiling; bonus exposure to FIX/SBE, Aeron, Docker/K8s, and crypto.

AWS Cryptocurrency Distributed Computing Docker Java +2 skills

IO Tech Solutions Limited

Backend Engineer - Java (Crypto)

Open 15d RemoteAPAC

Hong Kong SAR China

Backend engineer building and maintaining core Java services and APIs for a crypto custody and asset-management platform, integrating internal and external services in a distributed system. Day-to-day involves microservices, REST APIs, messaging (Kafka), observability, testing, and reliability work.

AI API Automation Blockchain Cloud +10 skills

Platform Product Owner (Blockchain)

Platform Product Owner defining the roadmap for blockchain custody and deposit/withdrawal systems. Responsibilities include designing fund flow policies (AML, FDS, settlement), managing ledgers, and collaborating with engineering and legal teams to build a secure financial platform.

Senior Backend Engineer (Blockchain Focus)

Open 15d RemoteAfricaSenior

Fully remote senior backend role building scalable APIs and services that integrate with blockchain networks for crypto products. Day-to-day involves blockchain/smart-contract integration, performance and database optimization, and production reliability, using languages like Go, Python, Node.js, or Java plus cloud and container tooling.

API AWS Azure Blockchain Cloud +11 skills

Senior Backend Engineer, Blockchain (Remote)

Open 15d RemoteAfricaSenior

Senior backend engineer on a fully remote team building scalable backend systems that connect to blockchain networks and decentralized apps. Day to day: architecting APIs, optimizing databases, and ensuring security and reliability of crypto products, using Go, Python, Node.js, or Java.

API Blockchain Java Node.js Python

IO Tech Solutions Limited

C# Engineer (WFH)

Open 15d RemoteAPAC

Hong Kong SAR China

IO Tech Solutions is hiring a remote C# Engineer (Hong Kong-based listing) to build, optimize, and maintain high-performance, low-latency C#.NET trading infrastructure for crypto market-making — including real-time order management, risk analysis, and exchange/market data integrations — working closely with traders and quantitative analysts.

API Blockchain Cryptocurrency C# .NET +9 skills

DevOps Engineer

Open 15d APACContract

Senior hands-on DevOps/SRE engineer owning cloud infrastructure, Kubernetes, CI/CD, observability, incident response and operational security for a high-traffic crypto/DeFi production platform. Requires 7+ years of experience, strong GCP/Kubernetes skills and practical security fundamentals; must be based in Singapore or Kuala Lumpur.

API Api Security Authentication Automation Blockchain +25 skills

DevOps Engineer - Custody

DevOps Engineer at BIT (formerly Matrixport), a Singapore-based digital asset financial services group, building and securing custody infrastructure. Day to day: automating deployments, configuring VMware/Linux servers, monitoring with Prometheus/ELK, and working with Kubernetes and AWS under strict security practices.

Ansible AWS Blockchain CentOS Cloud +16 skills

DevOps Engineer - Custody

DevOps engineer at BIT (formerly Matrixport), a Singapore-based digital asset financial services group, designing automated deployment solutions for custody infrastructure. Day to day involves configuring VMware virtual machines, Linux servers, Kubernetes and AWS environments, monitoring performance, and applying security best practices. Mandarin communication is required.

Ansible AWS Blockchain CentOS Cloud +16 skills

Cloud DevOps Engineer for Crypto & FinTech

BIT is hiring a Cloud DevOps/Infrastructure Engineer in Singapore to design automated deployment solutions, optimize VMware VM deployments, and monitor system health. Core stack includes Linux, VMware, Kubernetes, AWS, Prometheus/ELK, and Terraform/Ansible, with Mandarin communication required for stakeholder work.

Ansible AWS DevOps ELK Fintech +6 skills

NOT A HOTEL株式会社

ソフトウェアエンジニア（27年新卒）

New-graduate software engineer (April 2027 start) at NOT A HOTEL, working fully onsite in Tokyo on products like the owner/guest apps, smart-home controller, hotel operations tools, and NFT offering, applying your strongest stack among Go, Next.js, SwiftUI, Kotlin, or Solidity. Hiring runs through interviews and a ~1-month internship before a possible offer.

AI Claude Code Kotlin Next.js Notion +3 skills

IO Tech Solutions Limited

Senior Java Engineer – Algorithmic Trading & Liquidity Platforms

Open 15d RemoteAPACSenior

Hong Kong SAR China

Hands-on senior Java engineer building high-performance, low-latency algorithmic trading infrastructure (EMS, SOR, pricing and routing engines) for crypto and traditional asset classes at a digital-assets fintech. Day to day: design trading systems, optimize performance, keep platforms stable for 24x7 trading, and work directly with traders.

API Cloud Data Modeling DeFi Docker +11 skills

IO Tech Solutions Limited

Backend Java Developer

Open 15d RemoteAPACMiddle

Backend Java Developer building the core trading platform of a Hong Kong cryptocurrency exchange (a client of IO Tech Solutions): implementing REST/WebSocket APIs and a high-concurrency 7×24 trading system. Core stack: Java, Spring Boot/Cloud, MyBatis, Redis, Kafka, Elasticsearch; open to 1–5 years' experience and fresh graduates.

API Business Development Cloud Cryptocurrency Design Patterns +11 skills

IO Tech Solutions Limited

Senior SRE [VP-Grade] - Leading Crypto HFT

Open 15d RemoteAPACC-level

VP-grade Site Reliability Engineer keeping a crypto/digital-asset platform's production infrastructure stable and scalable: writing Terraform IaC, running Kubernetes on AWS, tuning Datadog monitoring, owning CI/CD (Jenkins, JFrog, Flux, GitHub Actions), and joining on-call rotations.

Artifactory Automation AWS Bash Blockchain +20 skills

Блокчейн-аналитик (OSINT / расследования)

Blockchain Analyst focused on OSINT and cross-chain transaction investigations. The role involves clustering addresses, analyzing patterns, performing due diligence, and automating data collection using Python and SQL.

API EVM Osint Python SQL

2K – 4K $ / mo

IO Tech Solutions Limited

Senior Software Engineer - Mobile (React Native)

Open 15d RemoteAPACSenior

Hong Kong SAR China

Senior mobile engineer acting as the technical lead for React Native iOS/Android apps in the crypto trading space — owning architecture, code quality, reviews, mentoring, and release processes. Core stack: React Native, TypeScript/JavaScript, and native mobile tooling.

Analytics Android API Authentication CI/CD +17 skills

IO Tech Solutions Limited

Database Administrator/Data Engineer

Open 15d RemoteAPAC

Database Administrator/Data Engineer managing and maintaining production data systems for a crypto-industry client: troubleshooting, enforcing data policies, and building scripts/pipelines for easier data access. Core stack is SQL, Python, CI/CD/Git/Linux, and Terraform, with bonus exposure to Postgres, PySpark/Databricks, AWS, and Go/Java.

AWS CI/CD Cloud Databricks Fintech +11 skills

Smart Contract Developer

Open 15d RemoteAPACContract

Design, implement, test, and deploy Solidity smart contracts on the Energi blockchain for a cross-chain bridge connecting Wanchain and Polygon, using MPC and threshold signature technology. Focus areas include smart contract security, gas optimization, cross-chain messaging, and documentation.

Blockchain Cryptocurrency Cryptography DeFi Ethereum +4 skills

IO Tech Solutions Limited

Senior React Native Developer [FULLY REMOTE WORKING ARRANGEMENTS]

Open 15d RemoteNorth AmericaSenior

Fully remote senior engineer building and maintaining high-performance iOS and Android apps with React Native for a client that runs a cryptocurrency exchange. Day to day spans architecture, implementation, testing, deployment, performance optimization, code reviews, and mentoring within the client's product engineering team.

Android Cryptocurrency Fintech iOS Java +8 skills

IO Tech Solutions Limited

Devops Engineer

Open 15d RemoteAPAC

DevOps engineer at a blockchain-based financial-markets company: deploys product updates and fixes, automates development and release processes, monitors and secures production systems, performs root-cause analysis, and provides Level 1 support. Core stack: Python, Linux/shell, MySQL, Docker, and Kubernetes.

Automation Bash Blockchain Cybersecurity DevOps +6 skills