Top Tech Jobs & Startup Jobs

Build coding evaluations and reinforcement learning task pipelines for coding-focused AI models. Run model evaluations against internal benchmarks, collaborate directly with customers to quality-check and deliver work, and develop reinforcement learning tasks. The role progresses from hands-on engineering to leading a small engineering team within approximately six months.

Join an early-stage company as a founding engineer, building backend services, user-facing applications, internal performance tooling, scalable data infrastructure, and shared organizational knowledge systems. You will partner with customers, deliver AI-driven applications from design through production, troubleshoot live systems, and help establish engineering culture and quality standards.

Investigate and evaluate potential securities litigation matters before filing. The attorney will analyze company reports, regulatory filings, market activity, and financial data; conduct public-record and source interviews; use AI and analytics tools; estimate damages; draft case materials; and collaborate with legal, financial, monitoring, and investigative teams. The role requires approximately five years of securities litigation experience, strong analytical judgment, and interest in plaintiff-side institutional investor work.

Build production features in Python and TypeScript for a specialized software platform. The role involves creating domain-specific content libraries, defining acceptance criteria, shaping product direction, reviewing automated design outputs, and supporting early external users. Candidates should combine professional software development experience with mechanical, electrical, or plumbing building-systems expertise. The position is fully on-site in San Francisco five days per week.

Design and build scalable evaluation systems for machine learning and LLM outputs. Define quality metrics, create labeled reference datasets, develop scoring pipelines, interpret statistical results, and connect findings to model and product decisions. The role requires strong Python skills, experience evaluating LLM-based data extraction or data quality, independent evaluation-system development, and comfort solving open-ended measurement problems. This is a full-time, on-site position in San Francisco or Toronto.

Lead end-to-end product design for a consumer mobile app as the sole designer. Create mobile flows, animations, micro-interactions, design systems, and visual brand foundations. Partner with leadership, engineers, and marketing on product strategy, implementation, and assets. Use user feedback to refine the experience and design engagement-focused features, including social and game-like mechanics.

Own post-sale relationships with business accounts from trial conversion through renewal, including onboarding, adoption, expansion, and customer calls. Convert proof-of-concept trials into paid contracts, communicate feedback to product and leadership, align customer objectives with platform capabilities, and build the customer success function and processes from scratch.

Build and optimize signup, onboarding, activation, and conversion experiences for a developer-facing SaaS product. Develop full-stack features with TypeScript, Node.js, and React; instrument user funnels; run A/B tests; analyze metrics; and iterate on experiments. The role requires production experience with large language models, prompting, tool use, and inference pipelines, plus a track record of improving growth metrics and shipping developer-focused products.

Own and operate production infrastructure for large-scale automated web data collection. Design proxy pools, session handling, isolated outbound traffic, browser identity systems, and automated challenge handling. Improve request success rates against anti-bot defenses, manage reliability and costs, investigate intermittent failures, and provide full production ownership including on-call responsibilities.

Handle shareholder-side securities class action litigation from filing through resolution. Responsibilities include managing cases, drafting briefs and motions, developing legal theories, contributing to case strategy, researching securities law, and tracking case-law developments. The role requires strong class action experience, persuasive legal writing, analytical judgment, a JD, and office attendance in San Francisco or Boston three days weekly.