Software Engineer

Listo; Greater London; On-site; Confidential; Full time

Job summary

A forward-thinking tech startup is seeking a Software Engineer to help build the core platform alongside founders and the CTO. You will work on production systems, integrations, and automation pipelines, directly contributing to features used by real customers. The ideal candidate will have solid software engineering fundamentals, experience with APIs, and a passion for innovative problem-solving. This is an opportunity to take ownership in a rapidly growing environment while collaborating with a dynamic team.

Benefits

Meaningful early equity

Flexibility in in-person work

Responsibilities

• Build and evolve backend systems and third-party integrations.
• Contribute to automation pipelines and agentic workflows.
• Ship production features used by real customers.
• Collaborate closely with founders and the CTO on technical decisions.
• Take ownership of specific systems or components as the platform grows.

Skills

Solid software engineering fundamentals

Experience with APIs and backend systems

Production-quality code writing

Responsibility for systems built

Tools

TypeScript

Node.js

Python

REST

OpenAPI

GraphQL

Docker

CI/CD

GCP

AWS

Job description

Software Engineer

Location: London (in-person, with flexibility)

Type: Full-time

Stage: Pre-seed

Equity: Meaningful early equity

Listo is building the infrastructure layer for AI-native distribution.

We help companies turn their existing APIs, products, and services into AI-native applications that run inside platforms like ChatGPT and other agentic systems.

We automate the entire lifecycle of AI app integration: MCP server generation, AI-native UI, hosting, deployment, monitoring, and optimisation for invocation and visibility.

Our ambition is bold:

AI platforms are the next major distribution channel, much like the App Store was a decade ago and we want to empower any business to participate.

We are an early-stage company operating at the edge of a fast-moving ecosystem. This is not a maintenance role. It’s about designing, shipping, and operating new infrastructure under real-world constraints, with real customers and real stakes.

We’re looking for a Software Engineer to join Listo and help build the core platform alongside the founders and CTO. You’ll work on production systems, integrations, and automation pipelines, contributing directly to features that ship to customers.

Tasks

What You’ll Do

• Build and evolve backend systems and third‑party integrations
• Contribute to automation pipelines and agentic workflows
• Ship production features used by real customers
• Collaborate closely with founders and the CTO on technical decisions
• Take ownership of specific systems or components as the platform grows

Requirements

What We’re Looking For

You’ll be a great fit if you:

• Have solid software engineering fundamentals
• Have experience working with APIs, backend systems, or integrations
• Are comfortable writing production‑quality code
• Take responsibility for the systems you build

Preferred Tech Stack

Experience with some of the following is a plus:

• Backend: TypeScript, Node.js, Python
• APIs & Integrations: REST, OpenAPI, GraphQL
• Automation / Agentic Systems: LLM-based workflows, task orchestration
• Infrastructure: Docker, CI/CD, GCP or AWS (basic Kubernetes knowledge a plus)
• Observability: Logging, metrics, basic monitoring

You Might Be an Excellent Fit If

• You have previously built agentic systems, MCP servers or AI-native applications.
• You enjoy working on platform or infrastructure‑adjacent problems
• You want to grow into a role with more ownership and responsibility
• You want to have a good time with a young and energetic team of founders