Head of Ecosystem & Community (Rollup Infrastructure)

Location: Remote - US only

Compensation: $150K - $220K

We are a pioneering blockchain infrastructure firm building the future of rollup architecture. Our vision is to solve the fragmentation of the current ecosystem by enabling synchronous cross-chain composability. We believe developers shouldn't have to choose between scalability and interoperability.

We are creating a modular rollup framework that allows app-specific L3s to remain sovereign while achieving atomic, cross-chain interactions—no trusted bridges or brittle async calls required. Backed by top-tier Ethereum researchers and VCs, we are looking for a high-leverage leader to grow our ecosystem and drive the adoption of our core platforms, including our Based Appchain Platform.

Key Responsibilities:

Senior Software Engineer - Fullstack (Remote, North America)

Location: Remote (North America: US or Canada)

Salary Range: $180,000 - $210,000 USD

We are a high-growth technology company at the forefront of revolutionizing security and compliance for businesses worldwide. Our advanced platform is trusted by thousands of companies and is backed by top-tier venture capital firms. We are seeking a highly motivated and experienced Senior Software Engineer - Fullstack to join our impactful, highly collaborative team. Every member is critical in shaping our product and culture, and we offer substantial responsibilities that directly impact our continued growth. This is a fully remote position for candidates residing in the US or Canada.

What You'll Do:

We are looking for a Customer Success Manager / VIP Sales who will help us build strong relationships with key clients, increase sales, and provide a high level of service. If you know how to sell, find a personal approach to clients, and want to work in a fast-growing crypto industry — this role is for you!

Responsibilities:

• Actively sell GoMining products and services to VIP clients using a personal approach.
• Build trust with clients, understand their needs, and offer the right solutions.
• Provide premium support and help clients quickly via chat, messengers, and email.
• Work with CRM systems (HubSpot, Salesforce, etc.), update the client base, and track all interactions and deals.
• Work with marketing and product teams to improve the client experience.
• Analyze client behavior and suggest ways to increase their activity and LTV.
• Make sure all client requests are completed and satisfaction stays high.
• Find opportunities for upsell and cross-sell with existing clients.

Requirements

We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for talented Senior Fullstack Developers to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications.

Key Responsibilities
 

• Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. 

• Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. 

• Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. 

• Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. 

• Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. 

• Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads.

Requirements

About HSO

HSO are a leading Microsoft Dynamics Gold partner who were founded in 1987 specialising in sectors such as Retail, Rental, Manufacturing, Professional Services and Local Government. With a head count of over 280 employees in the UK, winning multiple awards such as 2020 Microsoft Partner of the Year, Best Tech company 2021 and Top 3 Large Companies to work for 2021 our reputation in the Dynamics Market is higher than ever. Prioritizing customer satisfaction, our expertise and pragmatic approach to each customer’s business needs enable us to provide a 100% reference-able solution, supported by award winning 24-hour support. Our recruitment moto has always been – ‘We don’t want good people to just join us, we want them to stay with us’. Ensuring our employees are challenged, supported and engaged in our wider family is key to our continued success – we have a designated Learning and Development Team who are continuously offering the best training on the market, combined with an Engagement Team who are creative in ways we can have social activities virtually. From online chess tournaments to coffee mornings, to Netflix and book clubs, virtual singing classes, online yoga – the list is endless!

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 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.

Founding Full Stack Software Engineer (Backend/AI Focus)

Location: Los Angeles, CA, US (On-site)

Employment Type: Full-time

Salary Range: $160K - $225K

We are a rapidly growing, Y-Combinator-backed (YC X25) startup operating at the intersection of AI and Cybersecurity. We are building fully autonomous, in-house AI agent systems designed to solve critical, large-scale problems in modern web application security. Join a small, high-impact founding team to define and build the core technology from the ground up.

We are seeking a skilled and passionate Founding Full Stack Software Engineer with a strong focus on backend development and AI systems. You will be responsible for designing, developing, and maintaining highly scalable, high-performance web applications and our cutting-edge AI Agent platform.