Top Tech Jobs & Startup Jobs in Belfast

Lead the scientific strategy for Prolific’s participant marketplace, directing matching, ranking, allocation, forecasting, and supply-demand optimization algorithms. Manage and develop four Data Scientists and Applied Scientists while partnering with Product and Engineering to deploy production decision systems. Apply machine learning, experimentation, causal inference, simulation, and rigorous model evaluation to improve marketplace efficiency, fulfillment, participant experience, and data quality.

Own sales enablement across Prolific’s AI and research businesses. Build seller onboarding, training, pitch materials, battlecards, case studies, competitive intelligence, customer proof, and win-loss programs. Analyze CRM and call data, conduct buyer interviews, improve sales messaging, and report on win rates, deal velocity, content usage, and rep ramp time. Partner with Sales, Product, Customer Success, RevOps, and leadership to improve deal performance and translate market insights into measurable revenue outcomes.

Leads Prolific’s participant growth strategy across acquisition, activation, engagement, and retention. Owns growth channels, partnerships, marketplace supply, experimentation, analytics, and scalable operational capabilities. Manages a multidisciplinary team across growth marketing, recruitment, partnerships, and community, while partnering with Product, Engineering, Data Science, and Operations to improve participant journeys and drive measurable growth.

Build and support customer-focused software as a senior product engineer in a cross-functional team. Develop modern web applications, contribute across frontend and backend systems, operate production services, and improve observability, testing, and engineering practices. Collaborate with customers and product partners while working across AWS, GCP, and Azure using agile, event-driven, containerized, and serverless architectures.

Build and maintain scalable dbt data models, pipelines, macros, tests, documentation, and semantic layers. Develop trustworthy LLM-powered data transformations and agentic workflows with evaluation, monitoring, governance, and human oversight. Maintain analytics infrastructure supporting BI and natural-language querying, translate technical concepts for stakeholders, mentor team members, and collaborate with product, engineering, and BI teams.

Senior Product Designer responsible for discovering and solving complex product problems, creating user journeys, wireframes, prototypes, and service maps, and validating designs through research and experimentation. The role collaborates with product and engineering teams, improves product experiences, contributes to design systems, and advocates for customer-centered, accessible design across the organization.

Design, build, and maintain scalable data pipelines and platform services to support analytics, ML, and product teams. Implement infrastructure-as-code (Terraform) and Kubernetes-based deployments, develop data services/APIs, and ensure data quality, observability, security, and compliance. Partner with cross-functional teams, document systems, and continuously improve performance and reliability.

Provides senior technical leadership for an engineering team by shaping technical direction, architecture, roadmaps, and engineering standards. Leads technical discovery and solution design, drives code quality, testing, reliability, and performance, and collaborates across teams. Mentors engineers, influences technical decisions, and connects engineering work to customer and business outcomes while contributing hands-on.

Define and build quality frameworks for human data programs, partner with clients and engineering to design evaluation, recruitment and annotation strategies, implement automated checks and dashboards, investigate data integrity, and upskill teams to deliver high-quality human data at scale.

Lead Product Designer managing design vision and execution across multiple teams, enhancing user experiences within Prolific's marketplace and services.