Staff Mobile Engineer (React Native)

Location: Fully remote in Europe or India

Compensation: $60K - $70K

We are a fast-scaling financial technology startup operating at the intersection of Prediction Markets, AI, and Blockchain.

Our platform is currently processing $200M in annualized volume and experiencing explosive growth of 100% week-over-week. We are backed by elite institutional investors, including a $500M AUM digital asset fund and a premier AI/Crypto accelerator with a sub-1% acceptance rate. We are looking for a world-class Staff Mobile Engineer to own our iOS experience and build a high-stakes trading environment where performance is the primary product feature.

As a Staff Mobile Engineer, you will be the architectural lead and primary owner of our iOS trading experience. This is a product-critical role where your code sits directly between our users and live, real-money markets. You will work in a high-bandwidth environment alongside the CEO, COO, and founding engineering team to ship a mobile experience that rivals the best in TradFi.

Key Responsibilities:

Senior Frontend Engineer (Web3/DeFi)

Location: Fully Remote - EU time zones Type: Full-Time

Compensation: $150K - $175K

We are seeking a high-caliber Senior Frontend Engineer to lead the development of a performant, responsive, and real-time application powering a next-generation decentralized exchange (DEX) and network. In this role, you will bridge the gap between complex blockchain infrastructure and a seamless user experience, meeting the demands of a fast-paced, data-intensive trading environment.

Our team is a dynamic, forward-thinking, and fully remote group with an ambitious roadmap. We are looking for an engineer who thrives on the intersection of DeFi, Web3, and high-stakes security. If you have a relentless drive for speed without sacrificing rigor, and a commitment to state-of-the-art software testing, we want to build the future of finance with you.

Key Responsibilities:

Lead Blockchain Payments Engineer - Fiat Ramps & Financial Infrastructure

Location: Full-time, In-person — London, UK

Compensation: $250K - $300K

Join a team of elite builders and a high-growth software company redefining what is possible in the fintech and crypto space. We operate with a philosophy of speed, ownership, and talent density, driving towards a future where financial flows are seamless and instantaneous.

As the Lead Blockchain Payments Engineer, you will be a core architect and owner of our essential financial infrastructure. This high-impact role requires you to design and scale the core services that power seamless fiat ↔ crypto flows, real-time risk decisions, and rock-solid financial records for a high-volume, global platform.

You will act as a backend and onramp specialist, leading the development of high-throughput, low-latency distributed systems that manage the entire financial lifecycle from user deposit to on-chain settlement.

Are you a driven communicator who loves creating conversations, uncovering opportunities, and opening doors for a global SaaS/IoT product?

Keycafe is seeking an Outbound Sales Development Representative to engage potential customers across the United States and Canada, introducing them to the capabilities of the Keycafe SmartBox. You’ll be at the front line of the sales organization — generating pipeline, qualifying prospects, and setting up Account Executives for success.

If you’re motivated, confident on the phone, highly organized, and ready to grow your career in a fast-moving international sales team, this role is for you.

What You’ll Do

• Proactively reach out to targeted prospects via outbound calls, emails, and multi-channel outreach.
• Qualify leads, understand pain points, and schedule high-quality meetings for Account Executives.
• Manage and nurture early-stage opportunities from first contact through handoff.
• Clearly articulate Keycafe’s SmartBox value proposition and how it solves operational challenges.
• Consistently meet and exceed weekly/monthly outreach and booking quotas.
• Collaborate with sales and marketing to refine messaging, targeting, and outreach strategy.
• Maintain accurate activity tracking and lead notes in CRM systems.

Are you excited about diving deep into a specific industry, mastering its challenges, and building a marketing playbook from the ground up?

Keycafe is looking for a Marketing Coordinator who can take ownership of a single vertical — such as vehicle fleets or first responders — and drive end-to-end demand generation. You will research the market, craft strategy, execute campaigns across multiple channels, and ultimately map out the most effective marketing motions for your industry.

You will collaborate closely with Sales, Customer Success, and Product to bring high-quality content and campaigns to life while helping shape the future of our North American marketing efforts. This role requires fluent business English and strong writing abilities.

If you’re a creative, analytical, and detail-oriented marketer who loves testing ideas and producing high-impact assets, we want to hear from you.

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 UAE / Middle East 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

Are you a creative marketer who loves experimenting across channels to find what truly drives growth?

Keycafe is looking for a Marketing Coordinator to own our German-language marketing efforts and accelerate our brand presence across Germany. In this role, you’ll execute multi-channel campaigns, craft persuasive content in professional business German, and uncover new opportunities that expand our reach within key industries.

If you enjoy working across the full funnel, thrive in a fast-moving SaaS/IoT environment, and want to play a meaningful role in driving measurable results, this is your chance to make a global impact.

Are you a creative marketer who loves experimenting across channels to find what truly drives growth?

Keycafe is looking for a Marketing Coordinator to own our French-language marketing efforts and accelerate our brand presence across France. In this role, you’ll execute multi-channel campaigns, craft persuasive content in professional business French, and uncover new opportunities that expand our reach within key industries.

If you enjoy working across the full funnel, thrive in a fast-moving SaaS/IoT environment, and want to play a meaningful role in driving measurable results, this is your chance to make a global impact.

Do you thrive on meeting people, creating new opportunities, and building momentum on the ground?

At Keycafe, we’re looking for a Field Sales Representative who loves in-person outreach, hands-on demonstrations, and high-activity field sales. You’ll be the face of Keycafe in cities across the U.S., introducing businesses to our SmartBox technology and generating qualified leads for our Account Executive team.

This is a fast-moving, entrepreneurial role perfect for someone who excels in door-to-door engagement, communicates with confidence, and gets energized by showcasing innovative technology directly to customers.

What You’ll Do

• Conduct door-to-door outreach, cold calling, and in-person demos to build interest in Keycafe solutions.
• Generate qualified B2B leads across verticals such as automotive, hospitality, property management, retail, and public sector.
• Deliver live product demonstrations showcasing SmartBox features and operational benefits.
• Qualify leads and schedule follow-up demos or calls for Account Executives.
• Maintain accurate activity logs and funnel details within the CRM.
• Collaborate with AEs and marketing to refine messaging and strengthen territory coverage.
• Attend trade shows, conferences, and business events as a Keycafe brand ambassador.
• Continuously research and identify new local business opportunities.

Security DevOps Engineer - Crypto Social Infrastructure

Location: London, New York City (Office)

Compensation: $250K - $300K

We are a high-growth software development company of elite builders and proud contributors to the largest crypto social network globally, a platform that has generated over $600 million in revenue since March 2024. We are seeking a Security DevOps Engineer to join our team, focusing on building secure, scalable infrastructure for decentralized applications and redefining what’s possible in social finance.

You will play a critical, hands-on role in hardening our development and production environments. This role involves integrating security throughout our CI/CD pipeline, automating security scanning and monitoring, and working directly with development teams to ensure a strong overall security posture across our cloud and blockchain infrastructure.

What You'll Do: