Software Engineer (iOS) - Performance Optimization
Singapore
Full time
Office
Compensation is not specified
Role
iOS Developer
Description
About OKX:
Founded in 2017, OKX is a leading exchange platform for cryptocurrency spot and derivatives trading. Utilizing blockchain technology, OKX offers a wide range of innovative products, solutions, and trading tools that have reshaped the financial ecosystem. With a global user base of over 20 million individuals across 180 regions, OKX aims to provide a user-friendly platform that enables everyone to explore the world of crypto. Furthermore, OKX Insights, the research arm of OKX, stays ahead of cryptocurrency industry trends. With a commitment to innovation, OKX envisions a future of financial access driven by blockchain and decentralized finance.
About the team:
As a mobile software engineer, you will be responsible for building and maintaining the core OKX mobile application that serves millions of daily active users. Collaborating with design, product, and other engineering teams, you will identify customer needs and deliver high-quality new features through fast iterations. This position provides an opportunity to gain comprehensive knowledge of cryptocurrency mobile applications, including trading, asset management, and wallets.
Responsibilities:
- Develop mobile infrastructure and tools to optimize engineering efficiency
- Analyze and optimize UI and infrastructure application code for enhanced performance
- Create and maintain reusable iOS app components
- Collaborate with product engineering teams to offer technical solutions and implement best practices
- Enhance project structure and workflow to improve engineering productivity, efficiency, and quality
- Drive architecture innovations to support world-class mobile app development
Requirements:
- Bachelor's degree or equivalent practical experience
- Minimum of 3 years of industry experience in iOS development
- Demonstrated experience in building and releasing sophisticated iOS app products with frequent iteration
- Proven track record of optimizing app performance, reducing memory usage, and minimizing package size
- Strong understanding of design patterns and principles, with extensive knowledge of iOS tech stack
- Proficiency in Objective-C, Swift, C/C++, and tools like Xcode and instruments
- Deep knowledge of iOS SDK and ability to create scalable, dynamic, and high-performance UI components
- Familiarity with remote APIs, concurrency, layouts, transitions, animations, client-side persistence, and architectural patterns in mobile apps
Nice-to-have:
- Experience working in complex, cross-functional, or cross-business projects within a matrix organization
- Background in mobile architecture/infrastructure team with in-depth knowledge of related tech stack
- Expertise in sub-engineering areas such as performance optimization, toolchain, automated testing, and design patterns
- Excellent communication skills, both within a team and in delivering impactful business outcomes autonomously
Skills Required
OKX
Website
www.okx.comCompany size
Not specified
Location
United States
Description
OKX is a world-leading digital asset exchange, providing advanced financial services to traders worldwide leveraging blockchain technology.
Our platform offers spot & derivatives trading helping traders optimize their strategy. It provides a safe, reliable and stable environment for digital assets trading via web interface and mobile app by adopting GSLB, and distributed server clusters.
We believe blockchain technology will eliminate barriers to transactions, increase the efficiency of transactions across society, and eventually have a significant impact on the global economy. We strive to achieve something that changes the world and never stop to innovate and improve on our customer experience.
Everyvote
Backend Developer
New York, USA
New York, USA
Full time
Remote
About Us:
GP Vote is an innovative startup dedicated to transforming the democratic process through a cutting-edge voting platform integrated with blockchain technology. Our mission is to empower individuals to voice their opinions and shape collective decisions in a secure and transparent environment. We believe that every voice matters, and our platform fosters inclusivity by allowing users to propose titles and suggestions.
We are seeking a talented Frontend Developer with a strong background in React and TypeScript. The ideal candidate will have experience in Web3 and blockchain technologies, enabling them to contribute to our mission of delivering high-quality digital products.
Key Responsibilities:
Lead the migration of our backend systems from Express.js to ASP.NET.
Design, develop, and maintain scalable and secure backend services.
Collaborate with front-end developers to integrate user-facing elements using server-side logic.
Implement data storage solutions and ensure data integrity.
Develop and maintain APIs for mobile and web applications.
Optimize applications for maximum speed and scalability.
Monitor and troubleshoot issues in the production environment.
Stay updated with emerging technologies and trends in backend development, Web3, and Blockchain.
Required Qualifications:
Proven experience as a Backend Developer or similar role.
Strong proficiency in ASP.NET and C#.
Deep knowledge of backend development principles and best practices.
Proficient in database management (SQL, NoSQL).
Understanding of RESTful APIs and microservices architecture.
Experience with version control systems (e.g., Git).
Preferred Qualifications:
Experience with Web3 technologies (e.g., Ethereum, smart contracts).
Familiarity with Blockchain concepts and decentralized applications (dApps).
Knowledge of containerization technologies (Docker, Kubernetes).
Familiarity with CI/CD pipelines and DevOps practices.
Understanding of security best practices in backend development.
Benefits:
Competitive salary and performance-based bonuses.
Flexible working hours and remote work options.
Generous vacation policy and paid time off.
Health, dental, and vision insurance.
Professional development opportunities and access to online courses.
Collaborative and inclusive company culture.
Opportunities to work on cutting-edge technology in the Web3 and Blockchain space.
Team-building activities and company retreats.
How to Apply:
If you are excited about the opportunity to work with a forward-thinking company and have the skills we’re looking for, please send your resume and a cover letter to larry@everyvote.xyz.
Join us in shaping the future of voting technology!
GP Vote is an innovative startup dedicated to transforming the democratic process through a cutting-edge voting platform integrated with blockchain technology. Our mission is to empower individuals to voice their opinions and shape collective decisions in a secure and transparent environment. We believe that every voice matters, and our platform fosters inclusivity by allowing users to propose titles and suggestions.
We are seeking a talented Frontend Developer with a strong background in React and TypeScript. The ideal candidate will have experience in Web3 and blockchain technologies, enabling them to contribute to our mission of delivering high-quality digital products.
Key Responsibilities:
Lead the migration of our backend systems from Express.js to ASP.NET.
Design, develop, and maintain scalable and secure backend services.
Collaborate with front-end developers to integrate user-facing elements using server-side logic.
Implement data storage solutions and ensure data integrity.
Develop and maintain APIs for mobile and web applications.
Optimize applications for maximum speed and scalability.
Monitor and troubleshoot issues in the production environment.
Stay updated with emerging technologies and trends in backend development, Web3, and Blockchain.
Required Qualifications:
Proven experience as a Backend Developer or similar role.
Strong proficiency in ASP.NET and C#.
Deep knowledge of backend development principles and best practices.
Proficient in database management (SQL, NoSQL).
Understanding of RESTful APIs and microservices architecture.
Experience with version control systems (e.g., Git).
Preferred Qualifications:
Experience with Web3 technologies (e.g., Ethereum, smart contracts).
Familiarity with Blockchain concepts and decentralized applications (dApps).
Knowledge of containerization technologies (Docker, Kubernetes).
Familiarity with CI/CD pipelines and DevOps practices.
Understanding of security best practices in backend development.
Benefits:
Competitive salary and performance-based bonuses.
Flexible working hours and remote work options.
Generous vacation policy and paid time off.
Health, dental, and vision insurance.
Professional development opportunities and access to online courses.
Collaborative and inclusive company culture.
Opportunities to work on cutting-edge technology in the Web3 and Blockchain space.
Team-building activities and company retreats.
How to Apply:
If you are excited about the opportunity to work with a forward-thinking company and have the skills we’re looking for, please send your resume and a cover letter to larry@everyvote.xyz.
Join us in shaping the future of voting technology!
Payment in Crypto
Wallet
Senior Data Engineer
Full time
Remote
Wallet in Telegram is your gateway to the world of digital currencies, specially tailored for individuals in emerging markets. We understand the complexities and intimidation often associated with existing crypto solutions, which is why we've designed the Wallet to be the ultimate user-friendly platform for managing finances. No need to open a traditional bank account or wrestle with convoluted crypto exchanges and wallets.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
Now, we are seeking a Senior Data Engineer
Responsibilities:
Design and implement high-performance, reusable, and scalable data models for our data warehouse / BI.
Continuously discover, transform, test, deploy, and document data sources and data models.
Apply, help define, and champion data warehouse governance, including data quality, testing, documentation, coding best practices, and peer reviews.
Take the initiative to improve and optimize analytics engineering workflows and platforms.
Engage with cross-functional teams, including application developers and data analysts, to understand business requirements and deliver tailored data solutions.
Requirements:
Strong proficiency in SQL.
Significant experience with cloud providers.
Strong experience modeling data warehouses and building data pipelines.
Hands-on experience with data platforms and technologies like ClickHouse, Kafka, and Airflow.
Experience with Python for data processing will be a plus.
English knowledge (at least level B1) is required.
Why it is a fantastic opportunity:
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programme.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
Now, we are seeking a Senior Data Engineer
Responsibilities:
Design and implement high-performance, reusable, and scalable data models for our data warehouse / BI.
Continuously discover, transform, test, deploy, and document data sources and data models.
Apply, help define, and champion data warehouse governance, including data quality, testing, documentation, coding best practices, and peer reviews.
Take the initiative to improve and optimize analytics engineering workflows and platforms.
Engage with cross-functional teams, including application developers and data analysts, to understand business requirements and deliver tailored data solutions.
Requirements:
Strong proficiency in SQL.
Significant experience with cloud providers.
Strong experience modeling data warehouses and building data pipelines.
Hands-on experience with data platforms and technologies like ClickHouse, Kafka, and Airflow.
Experience with Python for data processing will be a plus.
English knowledge (at least level B1) is required.
Why it is a fantastic opportunity:
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programme.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.
Wallet
Frontend Engineer
Full time
Remote
Wallet in Telegram is your gateway to the world of digital currencies, specially tailored for individuals in emerging markets. We understand the complexities and intimidation often associated with existing crypto solutions, which is why we've designed the Wallet to be the ultimate user-friendly platform for managing finances. No need to open a traditional bank account or wrestle with convoluted crypto exchanges and wallets.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
Now we are seeking a Senior Frontend Engineer.
Responsibilities:
Regular work on improving frontend performance (abbreviations like FCP, TTFB should not scare you).
Collaborating with other frontend developers on complex architectural issues.
Writing and maintaining tests.
Developing and maintaining crucial dashboards: performance, errors.
Improving common parts of code: UI components, utils, hooks, etc.
Developing frontend tech strategy: picking new tools or deprecating old ones, prioritization of tech backlog, organizing large-scale refactorings.
Requirements:
5+ years of JS experience. We use TypeScript and React.
5+ years of CSS experience. We use CSS Modules + PostCSS.
Ability to work with static checkers: ESlint, Stylelint.
Understanding frontend building processes.
Understanding CI/CD processes.
Expertise in common web areas, such as networking, rendering, caching, etc.
Basic InfoSec knowledges: understanding common web vulnerabilities and types of atacks.
Why it is a fantastic opportunity
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programme.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
Now we are seeking a Senior Frontend Engineer.
Responsibilities:
Regular work on improving frontend performance (abbreviations like FCP, TTFB should not scare you).
Collaborating with other frontend developers on complex architectural issues.
Writing and maintaining tests.
Developing and maintaining crucial dashboards: performance, errors.
Improving common parts of code: UI components, utils, hooks, etc.
Developing frontend tech strategy: picking new tools or deprecating old ones, prioritization of tech backlog, organizing large-scale refactorings.
Requirements:
5+ years of JS experience. We use TypeScript and React.
5+ years of CSS experience. We use CSS Modules + PostCSS.
Ability to work with static checkers: ESlint, Stylelint.
Understanding frontend building processes.
Understanding CI/CD processes.
Expertise in common web areas, such as networking, rendering, caching, etc.
Basic InfoSec knowledges: understanding common web vulnerabilities and types of atacks.
Why it is a fantastic opportunity
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programme.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.
Tevaera
Front End Engineer
Atlanta, USA
Atlanta, USA
Full time
Remote
We are seeking a talented Front End Engineer who specializes in Blockchain & Crypto technology, as well as possesses expertise in Web, Mobile & Software Development. As a Front End Engineer, you will be working on designing and implementing user interfaces for our innovative projects in the Blockchain and Crypto space. You will collaborate with cross-functional teams to deliver cutting-edge solutions that enhance user experience and functionality.
Responsibilities:
- Develop user-friendly interfaces for web and mobile applications using the latest technologies and industry best practices.
- Collaborate with back-end developers to integrate front end components with server-side logic.
- Optimize applications for maximum speed and scalability.
- Ensure the technical feasibility of UI/UX designs.
- Stay updated on emerging trends and technologies in front end development.
Requirements:
- Proven experience as a Front End Engineer or similar role.
- Strong proficiency in Blockchain & Crypto technology.
- Extensive knowledge of Web, Mobile & Software Development.
- Proficiency with front end languages such as HTML, CSS, JavaScript.
- Experience with frameworks such as React, Angular, Vue.js.
- Familiarity with RESTful APIs.
- Excellent problem-solving skills and attention to detail.
- Strong communication and teamwork skills.
If you are passionate about front end development and have a keen interest in Blockchain & Crypto technology, we invite you to join our dynamic team and contribute to driving innovation in the industry.
Responsibilities:
- Develop user-friendly interfaces for web and mobile applications using the latest technologies and industry best practices.
- Collaborate with back-end developers to integrate front end components with server-side logic.
- Optimize applications for maximum speed and scalability.
- Ensure the technical feasibility of UI/UX designs.
- Stay updated on emerging trends and technologies in front end development.
Requirements:
- Proven experience as a Front End Engineer or similar role.
- Strong proficiency in Blockchain & Crypto technology.
- Extensive knowledge of Web, Mobile & Software Development.
- Proficiency with front end languages such as HTML, CSS, JavaScript.
- Experience with frameworks such as React, Angular, Vue.js.
- Familiarity with RESTful APIs.
- Excellent problem-solving skills and attention to detail.
- Strong communication and teamwork skills.
If you are passionate about front end development and have a keen interest in Blockchain & Crypto technology, we invite you to join our dynamic team and contribute to driving innovation in the industry.
Payment in Crypto
Wallet
Senior Frontend Engineer
Full time
Remote
Wallet in Telegram is your gateway to the world of digital currencies, specially tailored for individuals in emerging markets. We understand the complexities and intimidation often associated with existing crypto solutions, which is why we've designed the Wallet to be the ultimate user-friendly platform for managing finances. No need to open a traditional bank account or wrestle with convoluted crypto exchanges and wallets.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
Now we are seeking a Senior Frontend Engineer.
Responsibilities:
Regular work on improving frontend performance (abbreviations like FCP, TTFB should not scare you).
Collaborating with other frontend developers on complex architectural issues.
Writing and maintaining tests.
Developing and maintaining crucial dashboards: performance, errors.
Improving common parts of code: UI components, utils, hooks, etc.
Developing frontend tech strategy: picking new tools or deprecating old ones, prioritization of tech backlog, organizing large-scale refactorings.
Requirements:
5+ years of JS experience. We use TypeScript.
5+ years of CSS experience. We use CSS Modules + PostCSS.
Ability to work with static checkers: ESlint, Stylelint.
Understanding frontend building processes.
Understanding CI/CD processes.
Expertise in common web areas, such as networking, rendering, caching, etc.
Basic InfoSec knowledges: understanding common web vulnerabilities and types of atacks.
B2+ Level English.
Why it is a fantastic opportunity
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programme.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
Now we are seeking a Senior Frontend Engineer.
Responsibilities:
Regular work on improving frontend performance (abbreviations like FCP, TTFB should not scare you).
Collaborating with other frontend developers on complex architectural issues.
Writing and maintaining tests.
Developing and maintaining crucial dashboards: performance, errors.
Improving common parts of code: UI components, utils, hooks, etc.
Developing frontend tech strategy: picking new tools or deprecating old ones, prioritization of tech backlog, organizing large-scale refactorings.
Requirements:
5+ years of JS experience. We use TypeScript.
5+ years of CSS experience. We use CSS Modules + PostCSS.
Ability to work with static checkers: ESlint, Stylelint.
Understanding frontend building processes.
Understanding CI/CD processes.
Expertise in common web areas, such as networking, rendering, caching, etc.
Basic InfoSec knowledges: understanding common web vulnerabilities and types of atacks.
B2+ Level English.
Why it is a fantastic opportunity
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programme.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.