Senior DevOps Engineer (Exchange /Trading Platforms), Hong Kong
Hong Kong
Full time
Hybrid
Compensation is not specified
Role
DevOps
Description
We are seeking a talented individual to join our dynamic team focused on designing, developing, maintaining, and enhancing software for various projects. These projects are linked to our core businesses and are rapidly executed with a lean team. You will play a vital role in creating scalable applications by working on diverse components, ranging from frontend UI to backend infrastructure.
As a member of our team, you will tackle technically challenging issues, oversee feature design and coding, and collaborate closely with different functions within the organization. Your responsibilities will cover all aspects of the product development process, from conceptualizing innovative product ideas to refining details before launch.
Responsibilities
- Develop monitoring tools for applications and performance analysis
- Contribute to the design of system architecture
- Build and deploy cloud infrastructure using Infrastructure as Code (IaC) principles
- Enhance and manage Terraform, Kubernetes, and CI/CD pipelines
- Design and implement Disaster Recovery and backup solutions
- Streamline operations and processes through automation
- Communicate effectively, escalate issues appropriately, and ensure timely problem resolution
Requirements
- Proficiency in AWS, Terraform, and Kubernetes is essential
- Experience in constructing CI/CD pipelines for large-scale enterprise applications
- Familiarity with monitoring systems such as Prometheus and Grafana
- Knowledge of logging systems like Fluentbit, Elasticsearch, and OpenSearch
- Background in maintaining high-availability and low-latency crypto exchange platforms is a plus
- Understanding of Linux and Network Concepts
- Experience with GitOps utilizing ArgoCD is advantageous
- Minimum of 4 years of experience in DevOps and AWS
- Coding abilities and a commitment to writing maintainable code
- Strong interest in technology and financial environments
- Excellent communication and interpersonal skills to engage with technical and non-technical stakeholders
Life at the Company
- Encouragement to think innovatively and explore new opportunities alongside a supportive team
- Proactive and transformational work environment that empowers employees to find innovative solutions
- Opportunities for personal and professional growth through skill development
- Supportive work culture where colleagues collaborate and aid one another
- Unified team approach to achieve the company goal of widespread cryptocurrency adoption
- Flexibility in working hours and hybrid or remote setups
- Internal mobility program for career advancement
- Offering of Crypto.com visa card as a work perk
Benefits
- Competitive salary and attractive annual leave entitlements
- Promoting work flexibility with flexible hours and hybrid or remote options
- Internal mobility program for diverse career opportunities
- Work perk of a Crypto.com visa card upon joining
Founded in 2016, the Company serves millions of customers globally and is a rapidly growing cryptocurrency platform. Focused on accelerating cryptocurrency adoption through innovation, it aims to create a more fair and equitable digital ecosystem.
The Company is dedicated to equal opportunities, diversity, and inclusion in the workplace to ensure fair and transparent opportunities for all applicants. Your data will be used for recruitment purposes only, and only shortlisted candidates will be contacted.
Skills Required
Сrypto.com
Website
Сrypto.comCompany size
Not specified
Location
United States
Description
Not specified
Limechain
Smart Contract Engineer
Sofia, Bulgaria
Sofia, Bulgaria
Full time
Remote
About Role:
We are looking for a Smart Contract Engineer to join our blockchain engineering team and help build secure, production-grade decentralized applications and protocols.
In this role, you will design, develop, test, and review smart contracts across EVM and other blockchain ecosystems. You will work closely with blockchain engineers, auditors, and product teams to build reliable smart contract systems, identify vulnerabilities, and improve protocol security, architecture, and performance.
This role is ideal for someone with strong hands-on smart contract experience, deep knowledge of DeFi mechanics, and a security-first engineering mindset.
Responsibilities:
Design, develop, and maintain smart contracts for DeFi and blockchain applications
Write clean, secure, well-tested Solidity code
Build automated tests using Foundry, Hardhat, or Anchor
Review smart contract logic, architecture, and protocol design
Identify security risks, logic flaws, economic attack vectors, and trust assumptions
Analyze common DeFi risks such as flash loans, oracle manipulation, MEV, sandwich attacks, and governance risks
Use tools such as Slither, Mythril, Echidna, Halmos, Manticore, Aderyn, Certora, and Tenderly
Support audits, remediation, fix verification, and deployment processes
Document technical decisions, security considerations, and implementation details
Requirements:
Strong experience with Solidity and EVM smart contract development
Experience with Foundry and/or Hardhat
Solid understanding of blockchain architecture, DeFi protocols, token standards, and smart contract security
Ability to write secure, efficient, maintainable smart contract code
Experience testing, debugging, and reviewing smart contracts
Knowledge of common vulnerabilities: reentrancy, access control issues, oracle risks, precision errors, and upgradeability risks
Familiarity with OpenZeppelin and secure development practices
Strong analytical thinking and clear communication skills
Nice to Have:
Experience with Rust, TypeScript, Solana, Anchor, or NEAR
Experience building or auditing production DeFi protocols
Knowledge of formal verification, fuzz testing, symbolic execution, or property-based testing
Experience with Ethereum, Arbitrum, Base, Optimism, Solana, NEAR, MultiversX, or other ecosystems
Experience with AMMs, lending protocols, bridges, staking systems, or governance mechanisms
What We Offer:
Healthcare
Company computer
Paid holidays
Flexible hours
Competitive salary
Career growth
Friendly team
We are looking for a Smart Contract Engineer to join our blockchain engineering team and help build secure, production-grade decentralized applications and protocols.
In this role, you will design, develop, test, and review smart contracts across EVM and other blockchain ecosystems. You will work closely with blockchain engineers, auditors, and product teams to build reliable smart contract systems, identify vulnerabilities, and improve protocol security, architecture, and performance.
This role is ideal for someone with strong hands-on smart contract experience, deep knowledge of DeFi mechanics, and a security-first engineering mindset.
Responsibilities:
Design, develop, and maintain smart contracts for DeFi and blockchain applications
Write clean, secure, well-tested Solidity code
Build automated tests using Foundry, Hardhat, or Anchor
Review smart contract logic, architecture, and protocol design
Identify security risks, logic flaws, economic attack vectors, and trust assumptions
Analyze common DeFi risks such as flash loans, oracle manipulation, MEV, sandwich attacks, and governance risks
Use tools such as Slither, Mythril, Echidna, Halmos, Manticore, Aderyn, Certora, and Tenderly
Support audits, remediation, fix verification, and deployment processes
Document technical decisions, security considerations, and implementation details
Requirements:
Strong experience with Solidity and EVM smart contract development
Experience with Foundry and/or Hardhat
Solid understanding of blockchain architecture, DeFi protocols, token standards, and smart contract security
Ability to write secure, efficient, maintainable smart contract code
Experience testing, debugging, and reviewing smart contracts
Knowledge of common vulnerabilities: reentrancy, access control issues, oracle risks, precision errors, and upgradeability risks
Familiarity with OpenZeppelin and secure development practices
Strong analytical thinking and clear communication skills
Nice to Have:
Experience with Rust, TypeScript, Solana, Anchor, or NEAR
Experience building or auditing production DeFi protocols
Knowledge of formal verification, fuzz testing, symbolic execution, or property-based testing
Experience with Ethereum, Arbitrum, Base, Optimism, Solana, NEAR, MultiversX, or other ecosystems
Experience with AMMs, lending protocols, bridges, staking systems, or governance mechanisms
What We Offer:
Healthcare
Company computer
Paid holidays
Flexible hours
Competitive salary
Career growth
Friendly team
Payment in Crypto
TA Quant
Senior Rust Developer
Full time
Remote
About the Role
We're looking for a Senior Rust Developer to join our core engineering team and own the systems that sit closest to the market. This means low-latency order execution engines, high-throughput market data pipelines, real-time streaming infrastructure, and integrations with both centralized and decentralized exchanges. Every millisecond and every line of code matters here, and you'll be the person making sure it all holds up under pressure. This is not a role for someone who wants to write Rust adjacent to trading. You'll be building the backbone of live production systems where correctness, safety, and raw performance have direct P&L consequences. You'll work alongside quantitative researchers and other engineers to implement and deploy strategies, and you'll have meaningful input into the infrastructure decisions that shape how we build and scale. If you've spent years pushing Rust to its limits in high-performance environments and you want that work to matter in real markets in real time, this is the role.
Responsibilities
Design, build, and maintain high-throughput, low-latency trading systems in Rust
Develop and optimize order execution engines, market data feeds, and real-time processing pipelines
Build reliable integrations with centralized and decentralized exchanges across CEX and DEX environments
Architect systems for real-time streaming data and WebSocket communication at scale
Write safe, well-tested concurrent code leveraging async runtimes including Tokio and async-std
Collaborate with quantitative researchers to implement and deploy trading strategies into production
Profile, benchmark, and eliminate performance bottlenecks across critical system paths
Contribute to infrastructure decisions around deployment, observability, and fault tolerance
Requirements
5+ years of professional software engineering experience
2+ years building and maintaining production systems in Rust, and you will be tested on it
Deep command of Rust's ownership model, lifetimes, traits, and async patterns
Experience with high-performance networking including TCP/UDP, WebSockets, and gRPC
Strong understanding of concurrency primitives and lock-free data structures
Familiarity with financial systems, trading platforms, or real-time data pipelines
Linux systems programming and performance tuning experience
Comfortable working independently in a fast-paced, remote-first environment
Nice to Have
Experience with cryptocurrency exchanges, DeFi protocols, or blockchain RPC nodes
Knowledge of FIX protocol or other financial messaging standards
Open-source Rust contributions
Experience with FPGA or kernel-bypass networking such as DPDK or io_uring
Familiarity with quantitative trading concepts including order books and market microstructure
Infrastructure experience with Docker, Kubernetes, Terraform, or Prometheus/Grafana
We're looking for a Senior Rust Developer to join our core engineering team and own the systems that sit closest to the market. This means low-latency order execution engines, high-throughput market data pipelines, real-time streaming infrastructure, and integrations with both centralized and decentralized exchanges. Every millisecond and every line of code matters here, and you'll be the person making sure it all holds up under pressure. This is not a role for someone who wants to write Rust adjacent to trading. You'll be building the backbone of live production systems where correctness, safety, and raw performance have direct P&L consequences. You'll work alongside quantitative researchers and other engineers to implement and deploy strategies, and you'll have meaningful input into the infrastructure decisions that shape how we build and scale. If you've spent years pushing Rust to its limits in high-performance environments and you want that work to matter in real markets in real time, this is the role.
Responsibilities
Design, build, and maintain high-throughput, low-latency trading systems in Rust
Develop and optimize order execution engines, market data feeds, and real-time processing pipelines
Build reliable integrations with centralized and decentralized exchanges across CEX and DEX environments
Architect systems for real-time streaming data and WebSocket communication at scale
Write safe, well-tested concurrent code leveraging async runtimes including Tokio and async-std
Collaborate with quantitative researchers to implement and deploy trading strategies into production
Profile, benchmark, and eliminate performance bottlenecks across critical system paths
Contribute to infrastructure decisions around deployment, observability, and fault tolerance
Requirements
5+ years of professional software engineering experience
2+ years building and maintaining production systems in Rust, and you will be tested on it
Deep command of Rust's ownership model, lifetimes, traits, and async patterns
Experience with high-performance networking including TCP/UDP, WebSockets, and gRPC
Strong understanding of concurrency primitives and lock-free data structures
Familiarity with financial systems, trading platforms, or real-time data pipelines
Linux systems programming and performance tuning experience
Comfortable working independently in a fast-paced, remote-first environment
Nice to Have
Experience with cryptocurrency exchanges, DeFi protocols, or blockchain RPC nodes
Knowledge of FIX protocol or other financial messaging standards
Open-source Rust contributions
Experience with FPGA or kernel-bypass networking such as DPDK or io_uring
Familiarity with quantitative trading concepts including order books and market microstructure
Infrastructure experience with Docker, Kubernetes, Terraform, or Prometheus/Grafana
Payment in Crypto
Keras Labs
Senior Software Engineer
Full time
Remote
Role OverviewKeras Labs is seeking a high-performing Blockchain Engineer to design, build, and scale smart contract systems for a hybrid AMM + perpetual trading platform powered by AI agents.This role also includes building and deploying standard token contracts (ERC20/BEP20) and supporting core on-chain infrastructure in a fast-paced, product-driven environment. Core ResponsibilitiesBuild and maintain smart contracts (Solidity / Rust)Develop and deploy ERC20 / BEP20 (or equivalent EVM) tokensImplement token logic (minting, burning, access control)Build core protocol modules (liquidity, trading, vaults)Integrate price oracles and on-chain data sourcesOptimize contracts for gas efficiency and performanceCollaborate with frontend, product, and research teamsSupport testing, audits, and deployment workflowsMonitor protocol performance and on-chain activity RequirementsStrong proficiency in Solidity (EVM) and/or RustExperience deploying ERC20 / BEP20 or similar token standardsFamiliarity with smart contract testing (Foundry, Hardhat)Understanding of contract security best practicesStrong system design and problem-solving skillsComfortable working in a fast-paced, remote environment Nice to HaveExperience with DeFi protocols (DEX, perps, lending)Understanding of AMM models and perpetual mechanicsExperience building trading systems or financial primitivesExperience with oracles (Chainlink, Pyth, etc.)Exposure to AI agents or automated trading systemsOpen-source contributions in Web3 / DeFi Compensation & BenefitsPerformance Bonus: Annual incentive structureBenefits: Remote-first flexibility, high ownership, impact-driven culture
Payment in Crypto
TA Quant
Quantitative Researcher
Full time
Remote
We're looking for a Quant Researcher to join us remotely and take direct ownership of the research lifecycle, from raw data exploration all the way through to live strategy deployment. You'll work closely with our trading and engineering teams to develop, test, and continuously refine the models and algorithms that drive real P&L outcomes across crypto markets. This is a high-ownership role with meaningful exposure to live markets from day one. You won't be running support research in the background, you'll be a core contributor shaping the strategies we actually trade. That means working with large and often unconventional datasets, identifying exploitable statistical patterns in volatile and illiquid market conditions, and translating rigorous mathematical research into production-ready code that performs when it counts.
Responsibilities
Develop, backtest, and continuously improve quantitative trading models and algorithms, translating mathematical insights into production-ready code
Collaborate with trading and development teams to refine existing strategies and build new ones with a direct focus on P&L impact
Work through large and complex datasets to identify patterns, validate hypotheses, and stress-test models against real market conditions
Conceptualize valuation frameworks, improve mathematical models, and maintain strategy performance in live environments
Conduct ongoing statistical research into crypto market microstructure and price dynamics using both conventional and unconventional data sources
Requirements
Advanced degree in mathematics, statistics, physics, computer science, or a related quantitative field
Strong proficiency in probability and statistics, including time-series analysis, machine learning, and pattern recognition applied to financial data
Hands-on programming experience in Python, with familiarity in R or MATLAB and ideally some exposure to compiled languages like C++
Prior experience in crypto markets, digital asset trading, or algorithmic finance
Proven ability to work in a data-driven research environment with minimal direction
Rigorous, evidence-based approach to problem-solving with the ability to move quickly from hypothesis to testable implementation
Responsibilities
Develop, backtest, and continuously improve quantitative trading models and algorithms, translating mathematical insights into production-ready code
Collaborate with trading and development teams to refine existing strategies and build new ones with a direct focus on P&L impact
Work through large and complex datasets to identify patterns, validate hypotheses, and stress-test models against real market conditions
Conceptualize valuation frameworks, improve mathematical models, and maintain strategy performance in live environments
Conduct ongoing statistical research into crypto market microstructure and price dynamics using both conventional and unconventional data sources
Requirements
Advanced degree in mathematics, statistics, physics, computer science, or a related quantitative field
Strong proficiency in probability and statistics, including time-series analysis, machine learning, and pattern recognition applied to financial data
Hands-on programming experience in Python, with familiarity in R or MATLAB and ideally some exposure to compiled languages like C++
Prior experience in crypto markets, digital asset trading, or algorithmic finance
Proven ability to work in a data-driven research environment with minimal direction
Rigorous, evidence-based approach to problem-solving with the ability to move quickly from hypothesis to testable implementation
Payment in Crypto
Michael Har
Junior / Middle Metaverse Developer (Unity / Web3 / VR)
Manzhouli, China
Manzhouli, China
Full time
Remote
We are looking for a Metaverse Developer to help build interactive virtual environments and immersive digital experiences. The role involves developing 3D worlds, integrating Web3 technologies, and working with modern tools for real-time applications.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
Payment in Crypto