Senior/Staff Software Engineer (iOS) - Mobile Infrastructure
Singapore
Full time
Office
Compensation is not specified
Role
Software Engineer
Description
About OKX:
Established in 2017, OKX stands out as a prominent cryptocurrency spot and derivatives exchange globally. By leveraging blockchain technology, OKX is dedicated to transforming the financial landscape through a diverse range of sophisticated products, solutions, and trading tools. With a user base exceeding 20 million across 180 regions worldwide, OKX prioritizes user engagement and accessibility within the realm of cryptocurrency. Beyond serving as a top-tier decentralized finance exchange, OKX also operates OKX Insights, a research division that remains at the forefront of cryptocurrency trends. Committed to continuous innovation, OKX envisions a future where financial accessibility is secured through blockchain technology and decentralized finance.
About the team:
In the role of mobile software engineer at OKX, your responsibilities will center around the development and upkeep of a core OKX app utilized by millions of active users daily. This role will require collaboration with design, product, and engineering teams to pinpoint customer needs and swiftly introduce high-quality features through iterative processes. This exciting role offers the opportunity to gain insights into the complete lifecycle of crypto mobile applications, spanning aspects such as professional and retail trading, asset management, and digital wallets.
Responsibilities:
- Construct mobile infrastructure and tools to boost engineering efficiency.
- Evaluate and enhance UI and infrastructure application code for optimal performance.
- Create and sustain reusable iOS app components while collaborating with product engineering teams to implement technical solutions and best practices.
- Enhance project structure and workflow to bolster engineering productivity, efficiency, and output quality.
- Spearhead architectural innovations to support the advancement of world-class mobile app development.
Requirements:
- A Bachelor's degree or equivalent practical experience.
- Over 5 years of industry experience in iOS development.
- Proficiency in developing and launching intricate, mission-critical iOS applications with frequent iteration.
- Demonstrable experience in enhancing app performance, reducing memory usage, and managing package size.
- Profound grasp of design patterns and principles, with extensive knowledge of the iOS tech stack.
- Expertise in Objective-C, Swift, C/C++, and tools like Xcode and instruments.
- Thorough understanding of the iOS SDK to create scalable, dynamic, and highly responsive UI components.
- Practical knowledge of remote APIs, concurrency, layouts, transitions, animations, client-side storage, and architectural patterns in mobile applications.
Nice-to-have:
- Background in operating within a complex, matrix-oriented organization, engaged in cross-functional or cross-business projects.
- Experience in a mobile architecture/infrastructure team, possessing an in-depth comprehension of the tech stack.
- Proficiency in sub-engineering fields such as performance optimization, toolchains, automated testing, and design patterns.
- Strong communication skills, showcasing the ability to collaborate as part of a team while also being proficient in delivering significant business outcomes independently.
Skills Required
OKX
Website
www.okx.comCompany size
Not specified
Location
United States
Description
Not specified
amirhossein ashofteh
Remote Translation – English to Multilingual
Washington D.C., USA
Washington D.C., USA
Full time
Remote
Hello,
I’m a multilingual translator available for remote collaboration.
My primary working language is English, and I translate from English into:
• Persian (native)
• German
• French
• Arabic
• Italian
• Portuguese
I deliver accurate, natural translations adapted to the target audience, not word-for-word output.
I’m detail-oriented, reliable, and comfortable working with remote teams on ongoing translation tasks.
My background in web and creative fields allows me to handle website and app content effectively, ensuring translations fit properly within layouts and user interfaces.
I’m happy to complete a short test translation if required.
Payment in crypto (USDT) through LaborX works perfectly for me.
Looking forward to your reply.
I’m a multilingual translator available for remote collaboration.
My primary working language is English, and I translate from English into:
• Persian (native)
• German
• French
• Arabic
• Italian
• Portuguese
I deliver accurate, natural translations adapted to the target audience, not word-for-word output.
I’m detail-oriented, reliable, and comfortable working with remote teams on ongoing translation tasks.
My background in web and creative fields allows me to handle website and app content effectively, ensuring translations fit properly within layouts and user interfaces.
I’m happy to complete a short test translation if required.
Payment in crypto (USDT) through LaborX works perfectly for me.
Looking forward to your reply.
Payment in Crypto
Lumixion.io
Frontend Web3 Engineer | React | Solidity, Ethereum, Solana
Remote, USA
Remote, USA
Full time
Remote
About the RoleWe are seeking a React Web3 Developer to build decentralized applications and integrate smart contracts across multiple blockchain platforms. Candidates may have experience with Solana, Ethereum, Solidity, or similar smart contract technologies.ResponsibilitiesDevelop and maintain Web3 applications using ReactIntegrate and interact with smart contracts on various blockchainsImplement wallet connections and on-chain interactionsCollaborate with product and blockchain teamsWrite clean, secure, and well-documented codeRequirementsStrong experience with React and modern frontend developmentExperience with any smart contract platform (Solana, Ethereum, Solidity, or similar)Familiarity with Web3 libraries (ethers.js, web3.js, wagmi, etc.)Solid understanding of blockchain fundamentals and dApp architectureAbility to work independently with strong communication skillsPreferredExperience with DeFi, NFT, or multi-chain applicationsFull-stack Web3 experienceHiring ProcessTechnical TaskShortlisted candidates will be given access to a public repository. The task is to:Review the codebase and suggest improvements and optimizationsShare recommendations and best practices based on the existing implementationInclude screenshots of the terminal and browser as references where applicableSubmissions must be shared as:A Google Docs link, orA PDF documentTechnical Interview with CTOA detailed technical interview will be conducted with our CTO. Topics will include:In-depth discussion of the candidate’s understanding of the reviewed codebaseApproach to development challenges and best practicesCultural and Work Environment Interview with CEOThe final stage involves a meeting with the CEO to evaluate:Cultural fit within the companyWork ethic and attitudeAlignment with company values and visionExpectations regarding work environment and team collaboration
Payment in Crypto
XanaNetworo
Crypto Outreach Hunter – High Commission (Remote)
Full time
Remote
XanaNetwork (@xananetwork) is hiring 5–8 outreach hunters. We just relaunched — same core team with a track record of multi-hundred-million caps and six-figure holder bases. Your job:• Send 300–600 high-quality cold DMs per day on Twitter (DexScreener, Pump.fun, new launches)• Get warm replies → we close Pay (performance-first):• $800–$1,200 USD monthly base• + $1,500–$4,000 bonus per signed client• Top hunters clear $8k–$15k+/mo on commission• Paid trial $100 flat — first 8 who hit 5+ warm replies get hired No experience needed — we’ll train hungry people. Apply → DM @mainnetmike on Twitter with:1. How many DMs you can send daily2. Why you want the role Hungry & coachable only.
Payment in Crypto
John Paulson
Data Analyst
Full time
Remote
Bachelor’s degree in Data Science, Statistics, Mathematics, Computer Science, Economics, or a related quantitative field.Strong analytical and problem-solving skills with the ability to interpret complex datasets.Proficiency in SQL and experience working with relational databases.Solid knowledge of Python (Pandas, NumPy) or R for data analysis and automation.Experience building dashboards or visualizations using Tableau, Power BI, Looker, or similar tools.Understanding of statistical methods, A/B testing, and data modeling techniques.Ability to clearly communicate insights to both technical and non-technical stakeholders.Familiarity with Web3, blockchain metrics, on-chain data, and crypto ecosystems is a strong advantage.Ability to work independently, manage multiple tasks, and deliver on deadlines.Good written and spoken English.
Peeter Luik
Software Developer
Part time
Remote
I’m actively looking for a native Russian speaker who can expertly conduct or participate in job interviews—especially those requiring strong communication, technical understanding, and professional presence. This person should feel at ease discussing software engineering, or related topics, while also being able to assess a candidate’s clarity, depth, and overall fit. If you’re a fluent Russian speaker with the confidence and experience to shine in a technical interview setting, I’d be excited to connect and explore the opportunity with you.
Payment in Crypto