Contractor Founding Full-Stack Efounding Full-Stack Engineer

Role Details

This is a full-time contract role, Monday–Friday, approximately 9:00 AM–5:00 PM U.S. Eastern Time.

-Contract to founding engineer.

-We are looking for a senior-level builder with roughly 5 or more years of software engineering experience.

-The ideal candidate has at least 1 to 2 years of practical experience building with LLMs, AI agents, RAG

systems, evals, observability, analytics dashboards, or AI SaaS products.

-Formal credentials matter less than proof of work, speed of execution, product judgment, and the ability to

build clean software without a large team.

Responsibilities

-You will help design and build the first working MVP for Sira from the ground up.

-You will build trace ingestion through a JSON upload flow and a basic API endpoint so users can send

agent run data into the platform.

-You will design the database schema for users, workspaces, projects, agents, versions, runs, trace steps,

tool calls, errors, metrics, evaluations, and reports.

-You will build a dashboard where users can view runs, inspect trace steps, filter by version, identify failed

cases, and understand what happened inside an agent execution.

-You will build version comparison logic that compares two groups of agent runs across success rate, cost,

latency, error rate, tool usage, regression cases, and improvement cases.

-You will build a simple release or performance report that explains whether a new version looks better,

worse, or risky compared with the previous version.

-You will integrate lightweight LLM analysis to summarize failures, cluster common issues, and suggest

likely fixes or next tests.

-You will set up a clean deployment flow, environment variables, documentation, and a handoff-ready

codebase that another engineer could understand and extend.

- You will work closely with the founder to turn user feedback from design partners into simple product

improvements without overbuilding

Required Skills

-Strong full-stack engineering ability with experience building real applications, not just scripts or

notebooks.

-Strong backend experience with Python and FastAPI, or Node.js with Express or NestJS. FastAPI is

preferred.

-Experience with React, Next.js, TypeScript, and modern dashboard-style user interfaces.

-Experience with PostgreSQL and database schema design. Experience with SQLAlchemy, Prisma,

-Drizzle, or similar ORM tools is useful.

-Comfortable working with structured JSON event data, logs, traces, metrics, and analytics-style data

models.

-Experience building REST APIs, authentication flows, admin dashboards, and internal or customer-facing

SaaS products.

-Practical experience using LLM APIs such as OpenAI, Anthropic, or similar providers.

-Familiarity with LangChain, LangGraph, OpenAI Agents SDK, CrewAI, AutoGen, RAG systems, prompt

evaluation, or AI-agent workflows is highly valuable.

-Comfort with Docker, GitHub, environment variables, deployment basics, and clean project

documentation.

-Ability to move fast, communicate clearly, make tradeoffs, and avoid unnecessary complexity.

Before being offered the contractor role to build the MVP, you will be assigned a paid technical work sample

of $500–$1,000, depending on the scope and candidate experience.

If offered the role, you will be assigned to build the MVP in 1 month, with $5,000 USD fixed for the initial MVP

build.

Validation Retainer: $500–$1,000/month for light bug fixes, small improvements, weekly support, etc. while

the founder validates the product.

If Validated: Potential longer-term full-time founding engineer role at $5,500–$7,000/month USD + 1% vested

equity. Equity is not granted upfront. Equity would be vested and tied to a longer-term commitment,

contribution, and continued progress.