(Mid/Senior) iOS Developer - Exchange App
Status
London, United Kingdom
Full time
Hybrid
Compensation is not specified
Role
iOS Developer
Description
About the role:
As a member of our team, you will be responsible for developing top-notch iOS applications utilizing a modern tech stack. Our iOS apps are Swift-based and adhere to an MVVM architecture, with a strong focus on RxSwift and increasing adoption of SwiftUI. Prior experience with reactive programming and SwiftUI is considered advantageous.
The impact you will have:
- Work closely with tech and product team members in a collaborative feature team to create innovative features for a large global user base.
- Analyze product requirements and designs provided by product owners, offering valuable insights based on your iOS development expertise.
- Deliver high-caliber, modular, and scalable code that is both maintainable and testable within defined timelines.
- Participate in regular sync-ups with your feature team and the entire iOS team to ensure your contributions are acknowledged and respected.
Your qualifications:
- Minimum of 4 years of full-time iOS development experience, with no maximum cap.
- Excellent command of Swift, UIKit, and a solid grasp of iOS development best practices.
- Familiarity with MVVM architecture, while exposure to RxSwift and SwiftUI is highly desirable.
- Hands-on experience in writing unit tests and snapshot/UI tests.
- Proficiency in Git and knowledge of branching models such as Git-flow, Trunk Based Development, etc.
- Strong problem-solving abilities and a desire for continuous improvement.
- Outstanding communication and collaboration skills.
- Focus on generating top-quality code and exceptional user experiences.
- Applicants with more extensive experience will be considered for senior developer roles.
If you are a motivated and skilled iOS developer who thrives in a collaborative setting, we encourage you to apply. Share examples of your work or links to your portfolio in your application.
Life at this organization:
Empowered to think innovatively, explore new opportunities, and collaborate with a talented and supportive team. Engage in a transformative and proactive work environment that encourages creative solutions. Opportunities for personal and professional growth through the development of new skill sets. A supportive work culture where colleagues help and uplift each other. A cohesive team that collaborates to fulfill the mission of enabling cryptocurrency adoption worldwide.
Benefits:
- Competitive salary.
- Medical insurance coverage for employees and their dependents.
- Generous annual leave entitlement, inclusive of birthday and work anniversary days off.
- Flexibility in work hours and the option for hybrid or remote setup.
- Internal mobility programs for career advancement.
- Work perks such as a company-provided crypto.com visa card.
About the organization:
Founded in 2016, this organization currently serves over 80 million customers and is the world's fastest-growing global cryptocurrency platform. The vision is to make cryptocurrency accessible anytime, anywhere, to everyone. Dedicated to security, privacy, and compliance, the organization strives to drive cryptocurrency adoption through innovation and empower builders and entrepreneurs to create a fairer digital ecosystem.
The organization is an equal opportunity employer committed to fostering a diverse and inclusive workplace. We value candidates from varied backgrounds, perspectives, and skill sets that enhance our team's capabilities. Personal data provided by applicants will only be used for recruitment purposes.
Skills Required
Сrypto.com
Website
Сrypto.comCompany size
Not specified
Location
United States
Description
Not specified
Status
Averiq Labs
Smart Contract / Blockchain Engineer
San Francisco, USA
San Francisco, USA
Full time
Remote
Smart Contract / Blockchain Engineer
Company: Averiq Labs
Location: San Francisco, CA
Industry: Blockchain / Web3 Infrastructure
Employment: Full-time
About Averiq Labs
Averiq Labs is a Web3 technology company building infrastructure and decentralized systems for the next generation of blockchain applications.
We work across smart contracts, DeFi, blockchain infrastructure, protocol engineering, and developer tooling. We're looking for engineers who enjoy working close to the protocol level and solving difficult technical problems.
About the Role
We're looking for a Smart Contract / Blockchain Engineer to join our engineering team.
You'll design, develop, test, and optimize smart contracts and blockchain systems. You'll work with technologies such as Solidity, EVM, Foundry, DeFi protocols, and Ethereum-compatible networks.
This role is particularly suited to engineers who want to go beyond simply writing Solidity and understand how blockchain systems actually work under the hood.
Responsibilities
Design and develop production-grade Solidity smart contracts
Build and test DeFi protocols and blockchain applications
Develop automated tests using Foundry
Analyze existing protocols and smart-contract architectures
Optimize contract execution and gas usage
Research blockchain protocols and emerging technologies
Identify and mitigate smart-contract security vulnerabilities
Work with backend and infrastructure engineers
Participate in code reviews and technical design discussions
Research MEV, transaction ordering, and protocol-level mechanisms when relevant
Requirements
Required:
Strong programming fundamentals
Experience with Solidity or another blockchain smart-contract language
Understanding of Ethereum/EVM architecture
Familiarity with Git and GitHub
Understanding of smart-contract security fundamentals
Ability to read and understand existing smart-contract code
Nice to have:
Foundry experience
Experience with Uniswap, Aave, Compound, or similar protocols
Rust, Go, or TypeScript experience
Knowledge of EVM internals
MEV/arbitrage experience
Blockchain node/RPC experience
Previous DeFi or protocol development experience
Technical Hiring Process
We don't rely exclusively on interviews.
Our hiring process is designed to evaluate actual engineering ability:
1. Application & CV Review
We review your technical background and previous projects.
2. Technical Screening
A short technical discussion covering your experience and understanding of blockchain fundamentals.
3. Engineering Project
Qualified candidates receive a practical blockchain engineering assignment.
For example, candidates may be asked to build and test a small DeFi/treasury protocol, analyze an existing smart contract, or implement a blockchain-related component.
The project evaluates:
Code quality
Architecture
Solidity knowledge
Testing
Security
Problem-solving
Documentation
4. Technical Review
An engineer reviews the submitted project and discusses the implementation with you.
5. Final Interview
Discussion with the engineering team about your technical experience, interests, and potential role at Averiq Labs.
What We Value
We care more about what you can build than how many years you've worked.
We're particularly interested in engineers who:
Build projects outside of work
Read open-source protocol code
Understand why systems work, not just how to use them
Can independently investigate unfamiliar technologies
Care about security and correctness
Enjoy difficult technical problems
Compensation
Competitive compensation based on experience and technical ability, with additional consideration for exceptional blockchain engineering experience.
Company: Averiq Labs
Location: San Francisco, CA
Industry: Blockchain / Web3 Infrastructure
Employment: Full-time
About Averiq Labs
Averiq Labs is a Web3 technology company building infrastructure and decentralized systems for the next generation of blockchain applications.
We work across smart contracts, DeFi, blockchain infrastructure, protocol engineering, and developer tooling. We're looking for engineers who enjoy working close to the protocol level and solving difficult technical problems.
About the Role
We're looking for a Smart Contract / Blockchain Engineer to join our engineering team.
You'll design, develop, test, and optimize smart contracts and blockchain systems. You'll work with technologies such as Solidity, EVM, Foundry, DeFi protocols, and Ethereum-compatible networks.
This role is particularly suited to engineers who want to go beyond simply writing Solidity and understand how blockchain systems actually work under the hood.
Responsibilities
Design and develop production-grade Solidity smart contracts
Build and test DeFi protocols and blockchain applications
Develop automated tests using Foundry
Analyze existing protocols and smart-contract architectures
Optimize contract execution and gas usage
Research blockchain protocols and emerging technologies
Identify and mitigate smart-contract security vulnerabilities
Work with backend and infrastructure engineers
Participate in code reviews and technical design discussions
Research MEV, transaction ordering, and protocol-level mechanisms when relevant
Requirements
Required:
Strong programming fundamentals
Experience with Solidity or another blockchain smart-contract language
Understanding of Ethereum/EVM architecture
Familiarity with Git and GitHub
Understanding of smart-contract security fundamentals
Ability to read and understand existing smart-contract code
Nice to have:
Foundry experience
Experience with Uniswap, Aave, Compound, or similar protocols
Rust, Go, or TypeScript experience
Knowledge of EVM internals
MEV/arbitrage experience
Blockchain node/RPC experience
Previous DeFi or protocol development experience
Technical Hiring Process
We don't rely exclusively on interviews.
Our hiring process is designed to evaluate actual engineering ability:
1. Application & CV Review
We review your technical background and previous projects.
2. Technical Screening
A short technical discussion covering your experience and understanding of blockchain fundamentals.
3. Engineering Project
Qualified candidates receive a practical blockchain engineering assignment.
For example, candidates may be asked to build and test a small DeFi/treasury protocol, analyze an existing smart contract, or implement a blockchain-related component.
The project evaluates:
Code quality
Architecture
Solidity knowledge
Testing
Security
Problem-solving
Documentation
4. Technical Review
An engineer reviews the submitted project and discusses the implementation with you.
5. Final Interview
Discussion with the engineering team about your technical experience, interests, and potential role at Averiq Labs.
What We Value
We care more about what you can build than how many years you've worked.
We're particularly interested in engineers who:
Build projects outside of work
Read open-source protocol code
Understand why systems work, not just how to use them
Can independently investigate unfamiliar technologies
Care about security and correctness
Enjoy difficult technical problems
Compensation
Competitive compensation based on experience and technical ability, with additional consideration for exceptional blockchain engineering experience.
Payment in Crypto
Usman Idris
Senior iOS developer
Full time
Remote
We are looking for a talented iOS Developer to join our team on a full-time remote basis. The ideal candidate should have experience developing and maintaining iOS applications using Swift and Xcode. You will work closely with our design and backend teams to build high-quality, user-friendly mobile applications.Responsibilities:Develop and maintain iOS applications.Write clean, efficient, and maintainable code.Collaborate with designers and backend developers.Fix bugs and improve app performance.Participate in code reviews and testing.Requirements:Experience with Swift and Xcode.Knowledge of UIKit and/or SwiftUI.Familiarity with REST APIs and Git.Strong problem-solving and communication skills.Ability to work independently in a remote environment.Benefits:Competitive salary (paid in cryptocurrency).Flexible remote work.Opportunity to work on exciting projects.Friendly and supportive team.
Payment in Crypto
SADR B
Founding Technical Partners for Oferli – Elite Web & Mobile Development Team🌐
Remote, USA
Remote, USA
Part time
Remote
I am Sadr, CEO of Oferli. We are building a high-performance, elite technical team, and I am looking for 5 to 10 dedicated founding technical partners to join me in this mission.
The Vision:
Oferli is a 100% decentralized ecosystem. While we are rooted in Web3, our expertise spans across professional web and mobile application development. We are not just another agency; we are crafting the next generation of digital solutions. Our goal is to set a new standard for excellence, transparency, and decentralization.
What I am looking for:
I am building a professional, senior-level "Elite Team." I am looking for partners who are truly passionate about the vision—not just short-term gains. By combining our individual expertise and portfolios, we will establish Oferli’s collective professional reputation.
Requirements:
Proven Expertise: You must be a senior-level professional. Please provide your portfolio showcasing your best work in web and mobile development.
Commitment: This is a founding partnership. We are looking for those who believe in the mission and are ready to tackle complex challenges together.
Professionalism: We operate with high standards. Communication and efficiency are key.
How We Work:
Collaboration: We use professional, secure channels for all communications. Qualified candidates will be contacted via email to be invited to our private workspace on Notion to align on our roadmap and launch our upcoming projects.
Decentralized Operations: We leverage Web3 tools for collaboration and compensation, maintaining a fully decentralized environment.
Growth: We are launching with a core team of at least 5 founding partners, scaling to 10, to deliver high-impact results for our clients.
Application Process:
If you are a senior professional ready to build a world-class, decentralized ecosystem, apply here on LaborX. Qualified candidates will be contacted via email for further professional vetting and onboarding.
Let’s build the future, together.
Sadr B
CEO, Oferli
The Vision:
Oferli is a 100% decentralized ecosystem. While we are rooted in Web3, our expertise spans across professional web and mobile application development. We are not just another agency; we are crafting the next generation of digital solutions. Our goal is to set a new standard for excellence, transparency, and decentralization.
What I am looking for:
I am building a professional, senior-level "Elite Team." I am looking for partners who are truly passionate about the vision—not just short-term gains. By combining our individual expertise and portfolios, we will establish Oferli’s collective professional reputation.
Requirements:
Proven Expertise: You must be a senior-level professional. Please provide your portfolio showcasing your best work in web and mobile development.
Commitment: This is a founding partnership. We are looking for those who believe in the mission and are ready to tackle complex challenges together.
Professionalism: We operate with high standards. Communication and efficiency are key.
How We Work:
Collaboration: We use professional, secure channels for all communications. Qualified candidates will be contacted via email to be invited to our private workspace on Notion to align on our roadmap and launch our upcoming projects.
Decentralized Operations: We leverage Web3 tools for collaboration and compensation, maintaining a fully decentralized environment.
Growth: We are launching with a core team of at least 5 founding partners, scaling to 10, to deliver high-impact results for our clients.
Application Process:
If you are a senior professional ready to build a world-class, decentralized ecosystem, apply here on LaborX. Qualified candidates will be contacted via email for further professional vetting and onboarding.
Let’s build the future, together.
Sadr B
CEO, Oferli
Payment in Crypto
David Rutkovsky
Chief Technology Officer (CTO) / Senior Full-Stack Developer (Web3)
London, UK
London, UK
Full time
Remote
About the Role
We are building a next-generation Web3 social platform designed to redefine how digital communities connect, collaborate, and grow.
Backed by years of experience within the cryptocurrency, blockchain, and digital asset ecosystem, our team has developed deep insights into how founders, developers, investors, creators, and communities interact. This understanding inspired us to create a platform that goes beyond financial applications and focuses on empowering meaningful social engagement.
Our mission is to build a transparent, community-driven social network where users can share ideas, collaborate on projects, discover opportunities, and create lasting relationships. We believe the next evolution of social media will be powered by decentralized technologies while maintaining an exceptional user experience, simplicity, and long-term sustainability.
We are seeking an experienced Chief Technology Officer (CTO) or Senior Full-Stack Developer who is passionate about Web3 and capable of leading the technical vision, architecture, and execution of our platform from the ground up.
Responsibilities
Lead the technical strategy and product architecture.
Design and build scalable backend systems and modern frontend applications.
Develop high-performance APIs and real-time features.
Integrate blockchain technologies, wallets, and Web3 authentication where appropriate.
Build secure, reliable, and maintainable infrastructure.
Collaborate closely with product, design, and leadership teams.
Establish engineering best practices, code quality standards, and development workflows.
Mentor engineers and help grow the technical organization.
Evaluate emerging technologies and implement solutions that improve scalability, security, and user experience.
Requirements
5+ years of professional software development experience.
Strong experience with modern JavaScript/TypeScript ecosystems.
Experience with React, Next.js, Node.js, or similar technologies.
Solid understanding of system architecture, cloud infrastructure, databases, and API design.
Experience building scalable consumer-facing products.
Familiarity with blockchain technologies, Web3 infrastructure, wallets, smart contracts, or decentralized applications.
Strong knowledge of security best practices and application performance optimization.
Excellent problem-solving and communication skills.
Ability to work independently in a fast-paced startup environment.
Preferred Qualifications
Experience building Web3 or crypto products.
Understanding of decentralized identity, token ecosystems, or on-chain social applications.
Experience leading engineering teams or serving in a technical leadership role.
Background in DevOps, CI/CD, Docker, Kubernetes, or cloud platforms such as AWS or GCP.
Experience with real-time messaging, social platforms, or community products.
What We Offer
Competitive full-time compensation.
Opportunity to build a product from an early stage with significant technical ownership.
Flexible and remote-friendly work environment.
Collaborative team focused on innovation and long-term impact.
Work on cutting-edge Web3 technologies and help shape the future of digital communities.
Opportunity for career growth and leadership as the platform scales.
If you are excited about building the next generation of Web3 social experiences and want to make a meaningful impact from the earliest stages, we'd love to hear from you.
We are building a next-generation Web3 social platform designed to redefine how digital communities connect, collaborate, and grow.
Backed by years of experience within the cryptocurrency, blockchain, and digital asset ecosystem, our team has developed deep insights into how founders, developers, investors, creators, and communities interact. This understanding inspired us to create a platform that goes beyond financial applications and focuses on empowering meaningful social engagement.
Our mission is to build a transparent, community-driven social network where users can share ideas, collaborate on projects, discover opportunities, and create lasting relationships. We believe the next evolution of social media will be powered by decentralized technologies while maintaining an exceptional user experience, simplicity, and long-term sustainability.
We are seeking an experienced Chief Technology Officer (CTO) or Senior Full-Stack Developer who is passionate about Web3 and capable of leading the technical vision, architecture, and execution of our platform from the ground up.
Responsibilities
Lead the technical strategy and product architecture.
Design and build scalable backend systems and modern frontend applications.
Develop high-performance APIs and real-time features.
Integrate blockchain technologies, wallets, and Web3 authentication where appropriate.
Build secure, reliable, and maintainable infrastructure.
Collaborate closely with product, design, and leadership teams.
Establish engineering best practices, code quality standards, and development workflows.
Mentor engineers and help grow the technical organization.
Evaluate emerging technologies and implement solutions that improve scalability, security, and user experience.
Requirements
5+ years of professional software development experience.
Strong experience with modern JavaScript/TypeScript ecosystems.
Experience with React, Next.js, Node.js, or similar technologies.
Solid understanding of system architecture, cloud infrastructure, databases, and API design.
Experience building scalable consumer-facing products.
Familiarity with blockchain technologies, Web3 infrastructure, wallets, smart contracts, or decentralized applications.
Strong knowledge of security best practices and application performance optimization.
Excellent problem-solving and communication skills.
Ability to work independently in a fast-paced startup environment.
Preferred Qualifications
Experience building Web3 or crypto products.
Understanding of decentralized identity, token ecosystems, or on-chain social applications.
Experience leading engineering teams or serving in a technical leadership role.
Background in DevOps, CI/CD, Docker, Kubernetes, or cloud platforms such as AWS or GCP.
Experience with real-time messaging, social platforms, or community products.
What We Offer
Competitive full-time compensation.
Opportunity to build a product from an early stage with significant technical ownership.
Flexible and remote-friendly work environment.
Collaborative team focused on innovation and long-term impact.
Work on cutting-edge Web3 technologies and help shape the future of digital communities.
Opportunity for career growth and leadership as the platform scales.
If you are excited about building the next generation of Web3 social experiences and want to make a meaningful impact from the earliest stages, we'd love to hear from you.
Payment in Crypto
Tristika Criss
Backend Engineer with hands-on blockchain experience
Full time
Remote
We are building a modern hotel booking platform enhanced with Web3 capabilities, includingtoken-based payments, on-chain verification, and decentralized identity/ownership features.We’re looking for a Backend Engineer to design and build scalable backend systems andintegrate them with blockchain infrastructure. You’ll work closely with frontend and Web3engineers to deliver a seamless and reliable platform.
Payment in Crypto