Senior iOS Engineer
Binance, a prominent player in the global blockchain sphere and home to the largest cryptocurrency exchange worldwide by trading volume and user base, is entrusted by over 300 million individuals across 100+ countries. Known for its top-notch security, transparent user fund management, speedy trading engine, extensive liquidity, and a diverse range of digital-asset offerings, Binance spans trading, finance, education, research, payments, institutional services, Web3 features, and more. By harnessing the potential of blockchain and digital assets, Binance is dedicated to constructing an inclusive financial ecosystem that promotes financial freedom and enhances global financial accessibility.
About the Role:
Joining one of the largest feature teams on Binance's iOS client, you will be instrumental in shaping the modules that millions of users interact with daily. Responsible for the core user-facing experience, spanning from home feed and market discovery to account functions and the platform's server-driven UI framework, you will collaborate extensively with engineers from various teams to deliver high-quality Swift features across multiple modules, contributing to one of the most sought-after finance apps globally.
Responsibilities
•Utilize AI to develop and maintain top-notch iOS applications using Swift, focusing on creating clean, efficient, and scalable code. •Lead end-to-end iOS development cycles, from conceptualization and design to testing, deployment, and submission to the App Store. •Promote code quality by conducting code reviews, refactoring, and upholding iOS development best practices within the team. •Collaborate cross-functionally with product, design, and backend teams to translate requirements into robust iOS solutions. •Own and update technical documentation to ensure the clarity of development processes, architecture decisions, and implementation details.
Requirements
•Possessing over 3 years of professional iOS development experience with a strong skill set in Swift and the Apple ecosystem. •Practical experience with AI-driven development to enhance efficiency and code quality continuously. •Solid understanding of iOS architecture patterns (e.g., MVVM, MVC) and a track record of constructing scalable, maintainable iOS codebases. •Proficiency in SDLC processes with hands-on involvement in all software development phases. •Familiarity with version control systems, particularly Git, and modern iOS development tools like Xcode and TestFlight.
Nice to Have:
•Experience with SwiftUI in addition to UIKit. •Exposure to iOS CI/CD pipelines and automated testing frameworks like XCTest. •Proven history of releasing iOS applications on the App Store.
Why Binance
•Be a part of shaping the future with a leading blockchain ecosystem. •Collaborate with exceptional talent in a globally present, user-centric organization with a flat structure. •Engage in unique, fast-paced projects with autonomy in an innovative setting. •Prosper in a result-focused environment that offers career growth prospects and continuous learning. •Competitive salary and comprehensive company benefits.
•Benefit from a work-from-home arrangement, subject to the nature of business team requirements.
Binance is dedicated to fostering workplace diversity as we believe it is fundamental for our accomplishments.
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Senior Software Engineer (Blockchain)
MentTech is a forward-thinking technology company dedicated to transforming how mentoring and learning are delivered in the digital age. By combining advanced tools, intelligent systems, and a human-first approach, MentTech helps individuals, teams, and organizations harness the power of mentorship to unlock potential, build skills, and achieve lasting growth.
The Role
We are seeking a Smart Contract Developer responsible for ensuring that game listings within MentTech work properly and ensuring compliance with all game store policies.
Key Responsibilities:
• Architect, implement, and deploy secure smart contracts for an on-chain Play-to-Earn GameFi ecosystem
• Lead contract design decisions with a focus on robustness, auditability, gas efficiency, and resilience to attack vectors
• Mentor/junior developers: perform code reviews, establish standards, best practices in security & testing
• Collaborate cross-functionally with game designers, backend, QA, and security teams to align smart contract features with product roadmap
Qualifications:
• 2+ years hands‐on experience developing & deploying smart contracts (Solidity / EVM or equivalent) in production environments
• Track record of writing secure contracts, familiarity with common vulnerabilities (reentrancy, integer over/underflow, front-running, flash loans, etc.)
• Experience with audits, formal verification, fuzz testing, or other advanced contract assurance methods
• Strong test suite / CI workflow skills; comfortable using tools like Hardhat, Foundry, Truffle etc.
• Solid understanding of GameFi mechanics and how on-chain economics work
Bonus Points:
• Experience on multiple EVM chains or Layer-2 / sidechains
• Knowledge of cross-chain bridges, oracles, NFTs, tokenomics design
• Contributions to open-source security tooling or prior audit reports or published code you’re proud of
Why join MentTech?
At MentTech, we cultivate a culture of flexibility, autonomy, and the freedom to make a real impact on the broader Web3 ecosystem. Experience the advantages of a fully remote working environment where your expertise and contributions are rewarded with competitive compensation tailored to your role and project influence.
Ment Tech Labs
• Employee Equity & Incentives: Unlock future growth with equity and other potential incentives.
• Entrepreneurial Culture: Join a collaborative environment where we innovate together as partners.
• Cutting-edge Innovation: Work at the forefront of gaming and blockchain.
• Key Strategic Projects: Be part of transformative initiatives that are redefining the gaming landscape.
• Remote Flexibility: Enjoy a truly flexible, fully remote work setup that supports your lifestyle.
• Talented Team: Collaborate with a team of passionate, driven, and skilled professionals.
• Community Impact: Contribute to the growth and success of the Web3 and gaming communities.
• Flexible Payment Options: Receive payments in crypto or fiat, tailored to your preference.
• Growth Opportunities: Access valuable learning experiences and development paths.
MentTech Labs, Inc. is an equal opportunities workplace that doesn’t discriminate based on race, ethnicity, gender, ancestry, national origin, religion, sex, sexual orientation, gender identity, age disability, veteran status, genetic information, marital status, or any other legally protected status.
Product Manager – Portfolio Companies
Sirex Portfolio Companies
Salary: $135,000 – $190,000 USD base + equity
Location: Remote-first
About the role Own product strategy and roadmap for 1–2 portfolio projects (DeFi protocols, trading platforms or RWA infrastructure).
What you’ll do
Define vision, prioritize features and write specs
Work directly with smart-contract and frontend teams
Design user flows and drive product-market fit
Run user research and iterate fast
Requirements
4+ years Product Management experience
Previous Web3/DeFi product experience mandatory
Strong technical intuition
Apply → Send CV + 1 strongest product case
Frontend Engineer – Web3 Products
Sirex Portfolio Companies
Salary: $120,000 – $175,000 USD base + equity
Location: Remote-first
About the role Build beautiful, high-performance frontends for DeFi, RWA and agent platforms (Next.js + Wagmi/Viem stack).
What you’ll do
Ship trading interfaces, dashboards and wallet flows
Optimize for mobile and lightning-fast UX
Integrate with smart contracts and oracles
Work directly with design and product teams
Requirements
3+ years Next.js / React + TypeScript
Strong experience with Wagmi, Viem, RainbowKit or similar
Web3 product intuition (wallets, transactions, gas UX)
Apply → Send CV + GitHub
On-Chain Data Analyst
Sirex Fund + Portfolio
Salary: $110,000 – $160,000 USD base + equity
Location: Remote-first
About the role
Turn raw blockchain data into actionable investment insights and portfolio monitoring tools.
What you’ll do
Build and maintain Dune dashboards + custom indexers
Track TVL, user activity, token flows and protocol health
Create weekly investment memos and anomaly alerts
Support due diligence with on-chain forensics
Requirements
Strong SQL + Python experience
Deep knowledge of The Graph, Dune, Flipside or custom subgraphs
Previous crypto research or trading background
Apply → Send CV + 1 example Dune dashboard
Operations Associate / Chief of Staff
Sirex Fund Salary: $95,000 – $135,000 USD base + carry Location: Remote-first
About the role Be the right-hand person to partners: run fund operations, portfolio support and internal processes.
What you’ll do
Manage deal flow, data rooms and investment memos
Coordinate portfolio reporting and founder updates
Handle legal, compliance and admin tasks
Support events, LP communication and hiring
Requirements
2–4 years in VC, startup ops or consulting
Extremely organized and fast-moving
Web3/native crypto understanding is mandatory
Apply → Send CV + short note “Why you’d be a great CoS”