Top Tech Jobs & Startup Jobs in Belfast

Develop and maintain Tether’s peer-to-peer stack and modular ecosystem of more than 1,500 public npm modules. Build production-scale Node.js applications, create reusable packages, write maintainable code, and perform testing and debugging. The role also involves expanding distributed systems and networking capabilities while collaborating effectively in a remote, globally distributed team. Experience with native Node.js extensions, network optimization, advanced networking, and open-source P2P or decentralized technology is preferred.

Lead underwriting for digital asset financing by assessing institutional borrowers, financial statements, collateral, liquidity, leverage, counterparty and operational risks. Structure financing terms including LTV, tenor, covenants, margining and liquidation thresholds. Monitor existing exposures, collateral coverage and emerging risks, prepare evidence-based recommendations, and collaborate with stakeholders to execute transactions while maintaining disciplined credit standards.

Build and maintain developer tools, AI agents, CI workflows, automated code-quality checks, testing environments, and release automation for desktop and mobile applications. Evaluate tool effectiveness, reduce pull-request review noise, investigate failures, improve developer feedback loops, and support adoption through documentation and onboarding. Collaborate with globally distributed engineers to deliver reliable automation and maintainable software.

Develop and maintain Keet Mobile, a peer-to-peer chat and calling app for iOS and Android using React Native and Expo. Responsibilities include implementing chat, calling, media, pairing, and backup features; integrating native capabilities; optimizing device performance; writing unit and end-to-end tests; supporting CI and crash reporting; and collaborating with P2P, design, and product teams.

Own the strategy, roadmap, partner selection, integration, routing, and performance optimization for Tether Wallet’s fiat on-ramp and token swap experiences. Evaluate payment methods, providers, fees, conversion, compliance, and market coverage across global markets. Lead partner onboarding and collaborate with Legal, Compliance, Business Development, Engineering, Design, and expansion teams to deliver seamless USDT and XAUT purchasing. Track funnel KPIs, manage partner performance, and improve conversion and user experience.

Own Keet’s long-term vision, strategy, growth, and execution as a private peer-to-peer messaging and calling platform. Lead product and engineering teams, manage sprint delivery and cross-functional dependencies, guide P2P architecture decisions, oversee voice/video quality, rapidly prototype with AI tools, and manage mobile and desktop releases. Present strategy to executives and the board while driving the product toward one billion users.

Coordinates event-related creative requests from intake through delivery, briefing designers, managing timelines, reviewing print and digital assets, maintaining documentation, coordinating vendors, and identifying production or logistical risks. The role ensures brand, file, print, and platform specifications are met while improving event creative workflows and keeping cross-functional stakeholders aligned.

Build functional peer-to-peer applications and infrastructure with Pear and Bare, then create polished screen-share demos, code-along videos, guides, and interactive repositories. Translate cryptography, protocols, and distributed systems into accessible developer content. Collaborate with core engineering teams, technical influencers, and developer advocates to prototype applications and accelerate adoption of Tether’s decentralized technology ecosystem.

Architect and maintain GitHub-based CI/CD pipelines, test-driven deployments, Docker containerization, and automated release workflows. Manage JavaScript, TypeScript, and C++ package lifecycles; build cross-platform applications with CMake; and automate web, desktop, and mobile releases. Provision secure, scalable infrastructure using IaC tools while supporting Linux administration, networking, monitoring, troubleshooting, and release reliability across distributed teams.

Own end-to-end product design for digital wallets, from concept and prototyping through launch and iteration. Simplify complex crypto and self-custody experiences for new users, collaborate with product, engineering, research, and leadership, and raise design quality. The role also contributes to wallet strategy and requires rapid prototyping, strong visual and interaction design, and understanding of crypto networks, fees, and emerging financial users.