Applied Engineer

Ersilia; Greater London; Remote; GBP 113,000 - 212,000; Full time

Benefits offered by this job

Early-stage equity

Remote perks (home office)

Learning & development stipend

Unlimited AI token usage

Team offsites

Flexible PTO

Job summary

Ersilia is seeking a Forward-Deployed / Systems Engineer in the United Kingdom with a remote-first setup. You will embed with customers, ship production software end-to-end, and translate client patterns into core platform features.

You will own customer projects, build data pipelines with Temporal, model data in Postgres, and drive continuous product improvements. The role demands senior full-stack experience and strong ownership in a fast-growing AI startup environment.

Qualifications

• 5+ years shipping production full-stack software independently with customer exposure.
• Backend: Django, DRF, and advanced PostgreSQL (query planning, live migrations).
• Frontend: Next.js, React, and TypeScript.
• Workflows & APIs: Temporal preferred (Celery acceptable) with third-party APIs, webhooks, rate limiting, and reconciliation.
• Mindset: high agency, pragmatic, balances rapid scripts vs long-term systems.

Responsibilities

• End-to-End Delivery: Own named customer projects from discovery through deployment and verification.
• Pipelines & Integrations: Build idempotent, resumable data migration pipelines using Temporal.
• Data & Architecture: Model customer accounting data in Postgres and ensure reconciliation.
• Product Feedback Loop: Convert client solutions into permanent platform features.

Skills

Full-stack dev

Customer-facing

Django

DRF

PostgreSQL

Next.js

React

TypeScript

Temporal

APIs

Tools

Temporal

Celery

Webhooks

Job description

Role: Forward-Deployed / Systems Engineer

Location: United Kingdom, Remote First

Compensation: $150k – $280k base | $50k – $80k equity

About the Company

We represent a top-tier, fast-growing AI startup ($100M+ raised from elite VC and growth investors) building the next-generation AI-native ERP. By automating accounting from data entry to close, the platform modernization serves a wide range of clients—from high-growth startups to publicly traded enterprises. The team is composed of high-agency, exceptional performers across diverse domains.

The Role

A hands-on, high-impact role focused on embedding with customers, shipping production software end-to-end, and translating client-facing patterns back into the core platform.

Key Responsibilities

• End-to-End Delivery: Own named customer projects through discovery, design, build, deployment, and verification.

• Pipelines & Integrations: Build idempotent, resumable, and auditable data migration pipelines using Temporal.

• Data & Architecture: Model customer accounting data in Postgres, ensure system reconciliation, and construct internal tooling to streamline recurring tasks.

• Product Feedback Loop: Convert one-off client solutions into permanent, productized platform features.

Requirements

• Experience: 5+ years shipping production full-stack software independently, including direct customer-facing exposure.

• Backend: Strong proficiency with Django, DRF, and advanced Postgres (query plan optimization, live data migrations).

• Frontend: Proficiency with Next.js, React, and TypeScript.

• Workflows & APIs: Experience with durable execution frameworks (Temporal preferred, Celery acceptable) alongside third-party APIs, webhooks, rate limiting, and system reconciliation.

• Mindset: High agency, strong work ethic, and pragmatic judgment balancing rapid scripts vs. long-term systems.

Preferred Qualifications

• Background in accounting, ERP, or fintech domains (double-entry bookkeeping, chart of accounts, close, AP/AR).

• Prior forward-deployed, applied engineering, or special-projects experience.

Perquisites & Benefits

• High-trust, high-velocity culture with significant early-stage equity.

• Comprehensive remote perks (home office, co-working, internet allowance).

• Learning & development stipend, unlimited AI token usage, and regular European team offsites.

• Flexible PTO (27 days inclusive of holidays) and future US visa sponsorship opportunities.