Top Tech Jobs & Startup Jobs in Los Angeles, CA

Volunteer administrative assistant to support organizational workflows: coordinate across teams, prepare presentations and reports, support internal communications, and assist with ad-hoc support tasks to advance the nonprofit's mission.

Volunteer role to identify and evaluate foundation, corporate, and government grant opportunities; track eligibility, deadlines, and recurring opportunities; maintain a database and present summarized recommendations.

Lead Hasana's marketing and communications as a volunteer: manage social media and digital communications, create content (posts, flyers), support event and fundraising marketing, track engagement and refine strategies, and maintain consistent, professional messaging.

Research Fellows will validate AI-generated paper reproductions, simulations, and results; map research taxonomies; define standards for high-quality AI-assisted science; and create benchmark tasks and evaluations for frontier AI models. Fellows will contribute to a publicly released benchmark paper and open evaluation set as lead or first authors. The contract offers flexible, remote global work for current STEM PhD students or postdocs with published research and hands-on AI agent experience.

Lead organic social strategy and execution across eight D2C consumer brands. Manage channel strategies, content calendars, audience engagement, UGC sourcing, customer storytelling, performance reporting, optimization, and AI-enabled workflows. Partner with Content, Community, Growth, Customer Experience, and Marketing teams while mentoring social media coordinators and maintaining distinct brand voices across Instagram, Facebook, TikTok, YouTube, and other platforms.

Lead top-line revenue growth through rapid Go-To-Market experimentation across paid channels, viral and AI-driven growth tactics. Own Google and Facebook paid campaigns, collaborate with sales, deploy sales and AI tools, analyze performance, and iterate quickly in a fast-paced startup environment.

Sell heyLibby AI agent to fitness, wellness, and recreation businesses. Qualify inbound leads, prospect and cold call, manage pipeline in a CRM, demo value, close deals, and refine sales strategy with the executive team.

Architect, build, and maintain scalable full‑stack applications using React, TypeScript, Node.js, and AWS. Own features end-to-end, optimize performance and usability, collaborate with founders, and use AI tools to accelerate development in a fast-paced startup.

Design and build scalable backend systems, data pipelines, and cloud infrastructure. Own CI/CD, containerization, databases, and reliability; collaborate with tech leads to deliver secure, production-grade solutions for startups in a fully remote environment.

Design, develop, customize and maintain enterprise Sitecore solutions (versions 9/10, SXA, JSS, XM Cloud). Produce technical specs, implement components, test and debug in test and production, support teammates, perform demos to customers, and escalate/resolve issues.

Review, label, and QA datasets for AI/ML training; maintain trackers, databases, and dashboards; follow annotation guidelines and SOPs; prepare and clean data; document processes; collaborate to resolve data queries while ensuring confidentiality and timely delivery.

Sell MixRank's DaaS products via consultative sales to enterprise clients. Hit $750K ARR, build a 3x pipeline, manage complex multi-stakeholder deals, prospect independently, maintain CRM, collaborate with engineering, customer success and analysts, create sales enablement materials, and help scale the GTM team.

Early-career marketing role owning growth experiments: drive discovery through content, SEO, paid channels; write buyer-focused content; run and measure experiments; collaborate with founder to refine product messaging.

Designs and leads recruitment strategy and talent acquisition programs, improving sourcing, hiring processes, candidate experience, and workforce outcomes. Builds recruitment analytics frameworks, dashboards, and monthly reporting around time-to-fill, cost-per-hire, quality of hire, and offer acceptance. Partners with Talent Acquisition, HR leaders, hiring managers, candidates, and community organizations while developing social media branding and optimizing sourcing-channel ROI.

Provide executive support (inbox triage, calendar management, meeting prep, travel logistics) while coordinating CMS publishing, content workflows, design liaison, project trackers, and client communications. Maintain content calendars, perform light editing/proofreading, compile analytics snapshots, and ensure timely delivery across editorial and client campaigns.