---
title: 'Product Engineer (Full Stack) at Plain'
canonical: 'https://feeny.ai/job/product-engineer-full-stack-plain-london-zeqnz9w3fqda'
type: 'job'
last_seen: '2026-09-08'
---

# Product Engineer (Full Stack) at Plain

- **Company:** Plain
- **Location:** London, United Kingdom
- **Compensation:** £75k–£105k
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-04-17
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.ashbyhq.com/plain/11251278-77a8-475a-afa6-aa62e0a2a1df

## Job description

Plain is redefining customer support for the next generation of B2B companies. We’re building the fastest, most powerful platform to help companies move beyond reactive support and build true customer relationships.

Some of the world’s most forward-thinking companies - like Cursor, Vercel, and Granola - trust Plain to unify all customer interactions, enable faster team collaboration, and supercharge their workflows with AI.

B2B customer support is undergoing a seismic shift. AI is transforming the way companies engage with customers, shifting support from a siloed function to a company-wide effort across Slack, Discord, and any other channel you talk to customers in. The old way - slow, manual, and disconnected - no longer works.

This role is hybrid with 3 days a week in our London office.

## WHAT YOU'LL DO

Engineering at Plain is about much more than moving tickets from left to right - it’s about owning and solving problems end to end, from infrastructure decisions to feature design to button copy.

You will:

- Build across the stack: frontend interfaces, backend logic, and everything in between
- Ship high impact features that are fast, reliable, and delightful
- Contribute to product and technical direction, working closely with design, engineering, and founders
- Collaborate tightly with customers to understand their problems and solve them elegantly
- Help shape a fast moving, product centric engineering culture

## THIS IS A GREAT FIT IF YOU…

- Have shipped features end-to-end in fast paced environments
- Take initiative and show strong agency; you don’t wait to be told what to do, you figure out what matters, drive momentum and make it better, we move and ship fast here
- Are impact driven and motivated by seeing customers succeed; you measure the quality of your work by the end experience of users, not the abstractions or cleanliness of the code
- Want to work closely with customers and shape product decisions, not just execute on tickets
- Care deeply about craft and love building products that feel simple, powerful, and polished
- Want to not only do great work in a fast paced team, but also have a voice to level up how Plain as a company works

THIS WON'T BE THE RIGHT ROLE IF YOU…

- Are uncomfortable with ambiguity; we have some really exciting traction but are still at an early stage and are constantly trying new things as our company grows, you should enjoy “being in the storm”
- Find learning about new technologies a key motivation for coming to work; we invest in what makes us productive but will prefer the known option to the experimental and novel, Postgres is great
- Are looking to manage others, we're firmly looking for someone who, for now, wants to be an individual contributor

## About Plain

## Company Overview
- **One-liner**: Plain is an AI-powered customer support platform for B2B companies, providing a unified workspace with AI agents, workflow automation, and deep integrations across channels.
- **Entity Type**: Private (Series A)
- **Headquarters**: London, United Kingdom
- **Founded**: 2020
- **Founders**: Matt Vagni (Co-Founder & CTO); other co-founder name(s) not publicly confirmed.

## Core Business
- **Primary industry**: Customer Support Infrastructure / AI / SaaS
- **Target customers**: B2B companies, especially technology and service organizations (customers include Cursor, Sanity, Granola)
- **Mission**: “Help people solve problems together” (careers page)

## Products & Services
- **Ari (Assistant)**: AI agent that triages, researches, and resolves requests using team knowledge.
- **Sidekick**: AI assistant for agents to draft replies and find answers within customer context.
- **Workflows**: No-code/all-code automation for routing, notifications, actions in external systems (Linear, PagerDuty, custom APIs).
- **Channels**: Unified inbox connecting Slack, Microsoft Teams, Discord, email, chat, portal, and more.
- **API & Extensibility**: Every part of the platform can be extended, customized, or embedded into own product/tooling.
- **Insights**: Real-time aggregated and automated insights from support data to spot trends, churn risks, and upsell opportunities.
- **Ask AI**: Self-service AI for customers.

## Market Standing
- **Valuation**: Not disclosed
- **Key Metric**: Total funding of **$20.5M** (Seed round $6M in Nov 2022, Series A $14.5M in Feb 2025)
- **Notable Investors**: Index Ventures, Battery Ventures, Connect Ventures (careers page); Seed investors include 9 unnamed participants (CB Insights)
- **Growth Signals**: 
  - 41 employees (+85.2% YoY, +23 people)
  - 79 active job postings (monthly job posting growth +33.9%)
  - Revenue of $1M (LinkedIn annual revenue estimate)
  - Expanding across 10 countries (UK, US, Portugal, Germany, Poland, Ireland, etc.)

## Competitive Advantages
- **AI-first infrastructure**: Run multiple AI agents alongside human teammates; agents coordinate and stay under human control.
- **Open & extensible**: Fully API-driven, allowing teams to build custom workflows and integrate any external system.
- **Channel-agnostic**: Native support for Slack, Teams, Discord, email, chat — consolidating fragmented B2B support in one place.
- **Enterprise-level security**: Security treated as a core engineering principle, not just a checklist.
- **Automated insights**: Turns support conversations into actionable product and business intelligence.

## Strategic Focus
- Scaling the platform as the “support backbone” for ambitious B2B companies.
- Deepening AI agent capabilities (e.g., Ari) and workflow automation.
- Expanding go-to-market with dedicated Account Executive, SDR, and Partnerships hires.
- Maintaining an intentionally small, product-centric team that ships features rapidly.

## Why Work Here
- **Culture**: “Intentionally small, entrepreneurial and product-centric team” – engineers speak to customers daily and ship features from idea to shipped in the same day.
- **Interview process**: Clear, human, and transparent – designed to be fast and fair (intro call → technical interview → product sense call with hiring manager).
- **Compensation**: Competitive salaries (e.g. Senior Product Engineer: £90k–£140k + options; Support Engineer SF: $150k–$180k + options). Generous equity options.
- **Remote/hybrid**: Remote-first for Europe-based roles; San Francisco roles are office-based (with hybrid expectations).
- **Backing**: Backed by top-tier VCs (Index, Battery, Connect) and a network of founders/operators.
- **Perks**: Fast decision-making, ownership across the company, real impact on product direction.

## Sources
1. [plain.com](https://www.plain.com/)
2. [Plain Careers](https://www.plain.com/careers)
3. [LinkedIn Company Page](https://www.linkedin.com/company/plainsupport)
4. [CB Insights Profile](https://www.cbinsights.com/company/plain-2)
5. [Jobs on Ashby](https://jobs.ashbyhq.com/plain)

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