Staff React Native Engineer

Location: New York (Office)

On-site | Full-time

Compensation: Competitive

Our client is the development firm responsible for building and operating the full technology stack behind the world’s leading memecoin launchpad. These systems are engineered for low latency and high throughput, operating under constant load where precision is critical. As a React Native Engineer on the mobile team, the successful candidate will play a pivotal role in scaling a high-performance application that brings crypto and SocialFi to a global user base. This role requires working across the stack to craft seamless mobile experiences, shipping code rapidly, and iterating within a high-growth environment.

Key Responsibilities

Quantitative Software Engineer - DeFi Economic Optimization

Location: Remote - US, Canada and would consider candidates based in Puerto Rico

Compensation: $150K - $200K

We are a Series B quantitative research and optimization company that leads the field in DeFi economics. We manage market risk, optimize growth, and ensure economic safety for protocols facilitating most spot trading, borrowing, and lending activity across all of DeFi, securing over $42 billion in customer TVL. We are seeking highly skilled and motivated Quantitative Software Engineers to drive the safe progression of future financial systems.

You will be at the intersection of quantitative finance and software engineering, driving the design and implementation of risk management and optimization strategies for major DeFi protocols. This role involves full ownership, from building robust data pipelines and core modeling platforms to deploying logic that enhances capital efficiency and risk-adjusted yields.

Key Responsibilities:

Senior Account Executive, Financial Institutions & Banks

Location: Remote - United States

Compensation: $150K - $200K

We build technology that makes markets safer and more accessible by providing cross-border payments and financial infrastructure solutions to banks, from Tier 1 institutions to regional and community banks. Our risk management systems, oracles, and AI models secure billions in value while democratizing access to world-class financial tools. We are seeking a senior, high-impact Senior Account Executive to drive commercial growth and lead our go-to-market strategy for the banking segment.

This is a senior, high-impact role for an entrepreneurial, execution-oriented builder who can lead the full sales lifecycle from outreach to closing complex deals with financial institutions. You will combine strategic sales leadership with technical and operational fluency, designing and implementing bespoke cross-border payment flows in collaboration with internal teams. You must be equally comfortable in a boardroom with C-suite executives and in the weeds with a payments operations team.

Key Responsibilities:

About the Role
The UI Designer crafts visually compelling, intuitive, and consistent interfaces for digital products. You’ll translate complex functionality into user-friendly interfaces and design systems that promote clarity, confidence, and delight.

Key Responsibilities

• Create visually engaging and accessible designs for web and mobile applications.
• Develop and maintain scalable design systems and component libraries.
• Design clear, effective data visualizations for insights and recommendations.
• Define UI patterns for transparency, user control, and error handling.
• Collaborate with UX Designers, Product Managers, and Engineers to deliver polished, high-performing interfaces.
• Build interactive prototypes to validate designs and gather feedback.
• Incorporate feedback and usability data to continuously refine designs.

Requirements

• 3+ years of experience in UI Design or Visual Product Design.
• Strong portfolio showcasing UI design for digital products.
• Proficiency in design tools like Figma, Adobe XD, or Sketch.
• Understanding of responsive design, accessibility, and usability principles.
• Strong collaboration and communication skills.

Nice to Have

About the Role
The Experience Lead oversees and guides the end-to-end user experience of advanced digital products. This role combines leadership, strategy, and hands-on design direction to ensure solutions are human-centered, ethical, and impactful. You will champion the voice of the user, align cross-functional teams, and set the direction for how users discover, interact with, and build trust in digital solutions.

Key Responsibilities

• Define the holistic user experience vision and roadmap, ensuring experiences are intuitive, trustworthy, and scalable.
• Lead and mentor a multidisciplinary design team (UX, UI, Research, and Content) to deliver cohesive, high-quality experiences.
• Establish and enforce design principles and frameworks for transparency, error handling, and user control.
• Partner with Product Managers, Engineers, Data Scientists, and Business Stakeholders to align experience goals with product and business strategies.
• Oversee experience architecture across complex product ecosystems, including information structure, navigation, and interaction flows.
• Guide the creation of prototypes and usability testing to validate and refine experiences based on real user feedback.
• Define and track UX success metrics such as adoption, satisfaction, trust, and usability.

Requirements

Validator BD Lead - High-Performance Blockchain Infrastructure

Location: Remote - Europe or North America

Compensation: $140K - $150K

We are reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on a leading high-performance blockchain, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance, solving foundational failures that plague current systems. We are building the reliability and control institutions demand, and we are seeking a Validator BD Lead to drive the adoption of this critical infrastructure across the validator ecosystem.

As the Validator BD Lead, you will own and drive the validator engagement strategy, serving as a critical, high-ownership role that will shape our go-to-market efforts and partnership model as we prepare for mainnet. You will lead efforts to build relationships with top-tier validators and ensure successful adoption of our infrastructure.

Key Responsibilities:

Senior Marketing Manager - Stablecoin Infrastructure

Location: Based in EST timezone. Agora have a major preference for people who will work hybrid. Their office is in Jersey City.

Remote | Full-time

Compensation: $160K - $220K

Our client is a high-performance financial technology organization dedicated to transforming the global movement of money. Backed by premier investors, including Paradigm and Dragonfly, the firm is constructing a next-generation stablecoin infrastructure designed to be faster, more global, and more efficient than traditional siloed systems. By developing a full-service platform for issuing and integrating programmable stablecoins, the organization aims to provide developers, fintechs, and institutions with a seamless, trusted, and ubiquitous digital dollar stack.

The team combines the rigorous discipline of institutional finance with the creative agility of a crypto-native startup. Joining this mission-driven group means entering a tight-knit environment that prioritizes clear thinking, extreme ownership, and technical excellence. Our client is seeking a strategic Senior Marketing Manager with deep expertise in fintech or the blockchain industry to lead marketing strategy and drive growth within a highly regulated landscape.

Key Responsibilities

DeFi Market Analyst - Risk & Innovation

Location: Remote - Preference for NYC - Will accept Remote Europe & USA to work EST

Compensation: $120K - $150K

We are a technology company that builds cutting-edge risk management systems, oracles, and AI models to make markets safer and more accessible. Our platform is trusted by leading protocols in decentralized finance (DeFi), securing and managing billions of dollars in assets. We are seeking a talented DeFi Market Analyst to join our team, reporting directly to the Innovation Lead, to help shape the future of decentralized finance.

As a DeFi Market Analyst, you will be crucial in expanding our trading capabilities, optimizing incentive programs, and providing actionable quantitative insights. This role requires a strong blend of market research, quantitative analysis, and operational efficiency to improve execution quality across our platform.

Responsibilities:

Mercier Consultancy MD is excited to announce an opening for an Online Safety Specialist fluent in Polish and English, with the added benefit of paid relocation to Sofia, Bulgaria! In this pivotal position, you will be integral in maintaining a secure online environment for our users by monitoring and managing online content, addressing safety issues, and upholding community standards.

Key Responsibilities

• Monitor user-generated content and online interactions to identify potential violations of safety protocols and community guidelines.
• Conduct in-depth investigations into reported safety incidents, analyzing data and evidence to determine the most effective responses.
• Collaborate with various teams across the organization to develop and refine safety policies that promote digital trust.
• Prepare detailed reports on safety incidents and trends to inform stakeholders and guide improvements in safety processes.
• Stay informed about emerging digital threats and best practices in online safety to proactively enhance our protocols.
• Educate users about online safety practices and procedures to raise awareness and encourage safe behavior.

Requirements

Do you want the challenge — and the reward — of building your own book of business?

At Keycafe, we’re looking for an Account Executive who thrives on creating new opportunities, closing deals, and owning an entire territory or industry segment. This isn’t account management or order processing — it’s a chance to be entrepreneurial inside a growing SaaS/IoT company and essentially build a business of your own.

What You’ll Do

• Own a market — you will be focused on the Australian market, and you’ll be responsible for growing our top segments as if it were your own business.
• Run high-impact demos that clearly show prospects how our SmartBox product solves their operational challenges.
• Drive the full sales cycle: prospecting, outreach, demos, negotiation, and close.
• Experiment and adapt — try new outreach methods, refine your pitch, and find creative ways to break through.
• Collaborate across teams to ensure smooth handoffs and long-term customer success.

Why Join Keycafe