Jobs at Liftoff

Build and maintain infrastructure tooling for thousands of servers and distributed services. Responsibilities include host provisioning, configuration management, rapid code deployment, service monitoring, automated testing, linting, and infrastructure supporting high-volume real-time data pipelines. The role involves end-to-end project ownership, frequent code delivery, debugging complex distributed systems, and collaboration within a high-performing engineering team.

Manage technical accounting for complex transactions, including revenue, stock-based compensation, leases, debt, capitalized software, and equity. Research and document accounting positions, own policies, implement new accounting standards, prepare journal-entry support and financial statement disclosures, and assist with proxy reporting and audits. Collaborate with Legal, FP&A, business teams, and auditors while ensuring compliance with US GAAP.

Manage technical accounting activities, including researching complex transactions, drafting accounting memos, maintaining policies, implementing new standards, supporting equity accounting, preparing financial statements and disclosures, and assisting audits. The role requires collaboration with Legal, FP&A, and business teams on contracts and billing structures, along with expertise in US GAAP and public accounting experience.

Drafts, reviews, and negotiates vendor, customer, licensing, and insertion order contracts. Collaborates with Legal, Commercial, Sales, Product, Engineering, Finance, and Accounting teams on contractual matters. Maintains contract workflows, tracks milestones, supports compliance and approvals, improves templates, trains employees, and monitors relevant laws. The role is UK-based or remote within the UK and is offered initially as a contract position.

Own performance strategy and campaign optimization for selected APAC customers while managing billing and collections workflows. Coordinate with Finance, Revenue Operations, Deal Desk, Commercial, and Accounts Receivable teams to resolve invoice discrepancies, monitor payments, support credit checks, and reconcile accounts. Serve as a client and internal point of contact, improve billing processes, standardize workflows, and identify automation opportunities using data and AI.

Lead technical direction for mobile ad SDK and ad format development, owning architecture, cross-platform compatibility, system performance, reliability, testing, experimentation, and release strategies. Drive ambiguous cross-team initiatives, mentor engineers, influence roadmap decisions, uphold engineering standards, and contribute to hiring and leveling. The role focuses on scalable, low-latency systems using JavaScript, HTML5, and CSS technologies.

Own and grow key accounts while exceeding revenue targets, managing forecasts and complex negotiations, advancing pipeline, and closing high-value deals. Partner cross-functionally with Product, Marketing, Finance, and Operations to deliver customer solutions and influence roadmap priorities. Analyze data using Looker, AI, and Google Sheets to develop actionable insights. Coach junior team members and contribute to feedback culture. Travel includes client meetings, industry events, and quarterly in-person gatherings.

Manage and optimize customer campaigns throughout the account lifecycle. Serve as a technical liaison between clients, sales, revenue, product, and engineering teams; support onboarding and campaign launches; analyze performance trends; design A/B tests; build dashboards and visualizations; troubleshoot issues; improve processes; and mentor junior team members.

Develop and maintain production machine learning models, build scalable training and serving technologies, optimize real-time and batch ML pipelines, and monitor model performance and drift. The role involves deep neural networks, recommendation systems, automated retraining, ML research, engineering excellence, and communicating technical concepts to diverse audiences. Candidates need 6+ years of industry ML experience, strong coding skills, and experience deploying neural networks at scale.

Manage and grow strategic mobile advertiser accounts across Southeast Asia. Responsibilities include campaign launches, account strategy, upselling, new business development, revenue forecasting, pipeline management, executive relationship building, and cross-functional campaign optimization. The role requires analyzing complex datasets, developing strategic account plans, consulting clients on adtech and mobile marketing strategies, and delivering compelling executive presentations. Business proficiency in Mandarin Chinese and English is required, with international travel up to 25%.

Design, build, and operate high-throughput, low-latency ad-serving infrastructure processing millions of requests per second. Optimize GPU-powered TensorRT inference, feature stores, model serving, benchmarking, experimentation tooling, and system reliability. Partner with machine learning engineers to productionize models and own systems through design, deployment, observability, capacity planning, incident response, and optimization.

Own the strategy, business case, experimentation roadmap, and launch of Liftoff’s zero-to-one e-commerce advertising platform. Lead product development from beta toward general availability, partnering with engineering, machine learning, legal, finance, sales, and customers. Responsibilities include optimizing funnel performance, defining traffic quality standards, managing identity and attribution architecture, overseeing e-commerce integrations, guiding go-to-market strategy, and making data-driven scaling, pivot, or shutdown decisions.

Lead and manage all non-US tax compliance and financial reporting across jurisdictions. Oversee tax provisions, forecasting, modeling, vendor relationships, audits, regulatory monitoring, and cross-functional tax projects while improving processes and supporting leadership with quantitative insights.

The Security Engineer will manage Liftoff's SIEM, lead the adoption of AI-augmented SOC tools, triage alerts, and improve incident response processes while collaborating on various security functions.

Design, prototype, and productionize generative AI features and agentic workflows. Build Python services, TypeScript/React UIs, data pipelines, evaluation and instrumentation, and safeguards. Partner with product and stakeholders to measure impact, ensure reliability, and mentor engineers.

Manage a portfolio of mobile advertisers across SEA and Greater China, drive revenue expansion and client retention, develop strategic account plans, analyze performance data to optimize campaigns, forecast revenue, and lead cross-functional collaboration to meet client objectives.