Company Name: Lilo Social

Job Details: Hiring,Remotely,in,United,States,Remote,Mid,level

Job Url: https://builtin.com/job/full-stack-engineer/8288918

Job Description: About Lilo SocialLilo Social is a full-funnel eCommerce growth agency specializing in acquisition and retention for direct-to-consumer brands. With a team of over 50 professionals, we deliver best-in-class paid media, email marketing, and creative services to help brands scale profitably. We work across the entire customer lifecycle—from content creation and paid advertising to conversion rate optimization and retention marketing.Our partnership-first approach has earned us a 90% client retention rate and recognition as an Inc. 5000 honoree for three consecutive years (2023, 2024, 2025). We are proud to be a Klaviyo Master Elite Agency, a distinction held by only 0.2% of Klaviyo's 6,500+ partners. To date, we have driven billions of dollars in attributed revenue for our partners.The RoleAs a Full Stack Engineer at Lilo Social, you will build the internal tools and AI-powered systems that enable our team to scale efficiently and deliver exceptional results for clients. You will own projects end-to-end, from identifying workflow bottlenecks to shipping solutions that save hours of manual work across our media buying, creative, and retention teams. This is a ground-floor opportunity to shape how a high-growth performance marketing agency operates through custom software, intelligent automation, and strategic technical leadership.What success looks like:Internal tools that measurably increase team efficiency and reduce manual work across departmentsAI-powered features successfully integrated into daily workflows, driving automation and insightsHigh adoption rates of your solutions across media buyers, strategists, and creative teamsContinuous iteration based on team feedback, with regular feature releases that address evolving needsResponsibilitiesBuild internal dashboards and tools that help media buyers and strategists manage client accounts more efficientlyDevelop AI-powered features using large language models (LLMs) to automate creative analysis, campaign reporting, and workflow tasksCreate integrations with advertising platforms including Facebook Ads API, Google Ads API, and other marketing technology toolsDesign and maintain databases to aggregate performance data across clients and enable cross-account insightsWork directly with media buyers, strategists, and creative team members to understand pain points and build solutionsOwn the full development lifecycle for internal projects including scoping, technical design, implementation, deployment, and ongoing iterationImplement authentication, permissions, and security best practices for internal tools handling client dataBuild APIs and backend services to support internal applications and integrate with third-party platformsDeploy and manage applications in cloud environments with appropriate monitoring and error handlingDocument technical specifications, APIs, and system architecture for team referenceStay current on AI/ML developments and identify opportunities to incorporate new capabilities into internal toolsCollaborate with leadership on technical roadmap and prioritization of internal tool developmentRequirements3+ years of professional experience building web applications with React, Next.js, or similar modern frontend frameworks3+ years of backend development experience with Node.js, Python, or similar server-side technologiesStrong proficiency in TypeScript and modern JavaScript development practicesSolid understanding of SQL and experience designing relational database schemas (PostgreSQL, MySQL, or similar)Experience building and consuming RESTful APIs and working with third-party integrationsComfortable deploying and managing applications in cloud environments such as AWS, Google Cloud Platform, or AzureStrong problem-solving skills and ability to independently scope and deliver projects from concept to productionExcellent communication skills and ability to translate technical concepts for non-technical stakeholdersExperience building with large language models and AI APIs including OpenAI, Anthropic Claude, or similar platformsFamiliarity with advertising platform APIs such as Shopify API, Meta API, Google Ads API, TikTok Ads API, or Klaviyo APIExperience at a marketing agency, DTC brand, or high-growth startup environmentKnowledge of data visualization libraries and dashboard building (Chart.js, D3.js, Recharts, or similar)Experience with workflow automation tools, internal tool development, or building operational softwareCompensation and Benefits401(k) Retirement Plan: Fully customizable 401(k) with up to 4% company matchComprehensive Health Coverage: Fully-covered medical, dental, and vision insuranceGenerous Time Off: Competitive PTO policy and paid holidays to maintain work-life balanceWellness Benefits: Complimentary Headspace subscription and fitness stipendFully Remote: Work from anywhere with flexible hours and a distributed team cultureTechnology Supplied: Equipped with the latest laptop and necessary tools for successProfessional Development: Opportunities for growth, training, and expanded responsibilitiesCompensation: Competitive salary commensurate with experience.