Lead AI Engineer

Sierra

. Audit the existing architecture and codebase, defining what stays, what gets rebuilt, and how everything fits together .

Posted 9/18/2026full-timeRemote • BrazilSenior💰 $70,000 - $120,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong full-stack engineering capabilities with expertise in TypeScript, Python, and cloud infrastructure, while effectively managing data pipelines and integrations. Proven ability to design scalable systems and maintain high engineering standards in a remote environment.

Highest-signal resume keywords

Full-Stack EngineeringTypeScriptPythonCloud Infrastructure ProvisioningData Pipeline Development

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Software DevelopmentCI/CD WorkflowsLLM-Based SystemsData ModelingSQLSupabase/PostgresAPI IntegrationCloudflarePrompt DesignSkill Design

Soft Skills

Proactive CommunicationOwnership MindsetIndependent Work

Tools & Technologies

AWSGCPAzureKlaviyoPostscriptAttentiveBraze

Industry Keywords

MartechDTCEcommerceInternal ToolingAgency Workflows

Tech Stack

Tools & technologies

AWSAzureCloudGoogle Cloud PlatformPostgresPythonSQLTypeScript

About the role

Key responsibilities & impact

Audit the existing architecture and codebase, defining what stays, what gets rebuilt, and how everything fits together
Turn the current Cloudflare and Supabase-based system into a maintained, documented codebase with clear standards and guidelines
Design data pipelines ingesting Klaviyo, Postscript, and Attentive data into Supabase, including modeling, storage, syncing, and querying beyond platform API limitations
Build and maintain scalable engineering foundations
Design and ship agents and AI skills for account diagnostics, reporting, QA, go-to-market, and internal operations
Make internal AI tooling reliable and consistent for team-wide use
Define quality boundaries so the team achieves consistent results
Evolve prototype products into dependable, scalable client products
Own integrations with email and SMS platforms and future integrations
Establish development workflows with the founder and ensure changes enter the maintained codebase
Advise the founder on product feasibility, effort, and risk
Engage directly with clients to understand problems, adjust products, and ship solutions
Set engineering standards and practices for future hires
Lay the groundwork for the engineering function to grow beyond one person

Requirements

What you’ll need

5+ years building software professionally, with a track record of shipping things real people used
Strong full-stack engineering skills with TypeScript and/or Python, modern backend and frontend, Cloudflare, Supabase/Postgres, and SQL
Cloud infrastructure provisioning experience with AWS, GCP, or Azure
CI/CD workflows experience
Hands-on experience building LLM-based systems, including agents, tool use, RAG, evals, prompt design, and skill design
Experience building data pipelines from third-party APIs, modeling data, keeping it in sync, and querying it well
Comfortable with Supabase/Postgres or equivalent and owning data infrastructure end to end
Experience being the only or lead engineer somewhere
Ownership mindset and ability to work independently
Proactive communication in a remote, async environment
Excellent written and verbal English
Preferred: experience with Klaviyo, Postscript, Attentive, Braze, or the DTC/ecommerce ecosystem
Preferred: background at a fast-moving martech or retention product company
Preferred: experience productizing internal tooling or turning agency workflows into software
Preferred: familiarity with AI coding tools such as Codex or Claude Code
Preferred: product instinct and opinions about what should be built
Must be Brazilian and/or currently living in Brazil, as stated in the application form
Advanced to Fluent English skills, as stated in the application form

Benefits

Comp & perks

23 days of PTO
Generous maternity and paternity leave
Bonus structure
Fully remote with flexible hours and US overlap
Contractor engagement (no healthcare coverage)