Location: Remote - NYC preferred. Also open to US remote or EU remote (Must be able to overlap with EST 6+ hours a day) Remote | Full-time Compensation: $200K - $275K We are hiring on behalf of our client, a leading innovator in the blockchain space who is seeking a Senior Golang Engineer to join their core backend team. Our client has developed a real-time parimutuel prediction market platform built on Solana, designed to integrate ultra-fast, 60-second to 30-minute prediction markets directly into livestream environments and web platforms. Following a successful $1M pre-seed round in April 2026 led by prominent venture participants in the Solana ecosystem, the organization is scaling its infrastructure to handle high-concurrency, traffic patterns. As one of the first backend engineering hires, the successful candidate will own critical systems responsible for market creation, settlement, and automated payouts during high-stakes global livestream events. Key Responsibilities: - System Ownership: Design, build, and maintain production-grade, low-latency backend systems capable of handling thousands of simultaneous market resolutions. - Concurrency & Performance: Implement sophisticated Go concurrency patterns to manage real-time data flow and high-frequency transaction processing. - Infrastructure & Scaling: Manage and optimize distributed systems, ensuring idempotency, consistent ordering guarantees, and robust failure recovery. - Observability: Lead production debugging efforts using logs, metrics, tracing, and profiling to maintain 24/7 system reliability. - Technical Autonomy: Operate with a high degree of independence in a fast-paced startup environment, shaping the foundational architecture of a novel product category.

Location: Remote - NYC preferred. Also open to US remote or EU remote (Must be able to overlap with EST 6+ hours a day) Remote | Full-time Compensation: $200K - $275K We are hiring on behalf of our client, a leading innovator in the blockchain space who is seeking a Senior Golang Engineer to join their core backend team. Our client has developed a real-time parimutuel prediction market platform built on Solana, designed to integrate ultra-fast, 60-second to 30-minute prediction markets directly into livestream environments and web platforms. Following a successful $1M pre-seed round in April 2026 led by prominent venture participants in the Solana ecosystem, the organization is scaling its infrastructure to handle high-concurrency, traffic patterns. As one of the first backend engineering hires, the successful candidate will own critical systems responsible for market creation, settlement, and automated payouts during high-stakes global livestream events. Key Responsibilities: - System Ownership: Design, build, and maintain production-grade, low-latency backend systems capable of handling thousands of simultaneous market resolutions. - Concurrency & Performance: Implement sophisticated Go concurrency patterns to manage real-time data flow and high-frequency transaction processing. - Infrastructure & Scaling: Manage and optimize distributed systems, ensuring idempotency, consistent ordering guarantees, and robust failure recovery. - Observability: Lead production debugging efforts using logs, metrics, tracing, and profiling to maintain 24/7 system reliability. - Technical Autonomy: Operate with a high degree of independence in a fast-paced startup environment, shaping the foundational architecture of a novel product category.

Location: Remote - NYC preferred. Also open to US remote or EU remote (Must be able to overlap with EST 6+ hours a day) Remote | Full-time Compensation: $200K - $275K We are hiring on behalf of our client, a leading innovator in the blockchain space who is seeking a Senior Golang Engineer to join their core backend team. Our client has developed a real-time parimutuel prediction market platform built on Solana, designed to integrate ultra-fast, 60-second to 30-minute prediction markets directly into livestream environments and web platforms. Following a successful $1M pre-seed round in April 2026 led by prominent venture participants in the Solana ecosystem, the organization is scaling its infrastructure to handle high-concurrency, traffic patterns. As one of the first backend engineering hires, the successful candidate will own critical systems responsible for market creation, settlement, and automated payouts during high-stakes global livestream events. Key Responsibilities: - System Ownership: Design, build, and maintain production-grade, low-latency backend systems capable of handling thousands of simultaneous market resolutions. - Concurrency & Performance: Implement sophisticated Go concurrency patterns to manage real-time data flow and high-frequency transaction processing. - Infrastructure & Scaling: Manage and optimize distributed systems, ensuring idempotency, consistent ordering guarantees, and robust failure recovery. - Observability: Lead production debugging efforts using logs, metrics, tracing, and profiling to maintain 24/7 system reliability. - Technical Autonomy: Operate with a high degree of independence in a fast-paced startup environment, shaping the foundational architecture of a novel product category.

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Senior Product Engineer [Backend] (£95,000-£125,000 + Equity) at Attio.com - AI-native CRM Company Description: Attio.com - $116M Series B CRM startup backed by GV and Redpoint Job Description: Join the team rebuilding CRM for the AI era. As a Senior Product Engineer, you will own features end-to-end, architecting scalable backend systems that process 250,000+ events per minute. You will work directly with Node.js and TypeScript on GCP to solve complex data challenges for over 5,000 global customers. Why this role is remarkable: - Work under VP Engineering Philip Beevers, who previously led 600+ engineers at Google Cloud and served as SVP at Snyk. - Join a high-momentum team that has raised $116M from top-tier investors including GV, Redpoint, Balderton, and Point Nine. - Influence a product used by 5,000+ ambitious companies like Replicate and Modal, while enjoying perks like international team offsites. What you will do: - Lead end-to-end technical projects, from initial customer problem discovery to final deployment and maintenance. - Architect high-performance systems and REST APIs using TypeScript and Node.js to handle massive real-time data ingestion. - Re-engineer existing backend infrastructure on GCP to support rapid scaling and complex, AI-native GTM workflows. The ideal candidate: - Deep expertise in Node.js and TypeScript with a track record of building data-intensive, cloud-native backend applications. - Strong architectural intuition for designing scalable, secure systems and clean, consumer-friendly REST API contracts. - A proactive, product-minded builder who thrives in low-process environments and holds an exceptionally high bar for craft. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI Career Agent that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. Next steps Step 1. Visit our website. Step 2. Click 'Talk to Jack'. Step 3. Talk to Jack so he can understand your experience and ambitions. Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role. Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction. Step 6. If not, Jack will find you excellent alternatives. All for free. We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.