We’re building a new AI & Automation function — a small, high‑trust, high‑autonomy team operating inside an established business. We move fast, build real things, and ship value in days, not weeks. Internal tools that prove their worth get packaged and sold as commercial products. Everything you build has a second life.
We’re hiring two founding generalist engineers to help define how this team works and what it becomes.
You’ll Thrive Here If You Like
Fast cycles, short feedback loops, and real ownership
Picking up a brief, asking smart questions, and shipping something working in days
Prototyping over perfection
Autonomy without bureaucracy
Owning your work end‑to‑end — from idea to live system
No ticket queues. No six‑week design cycles. You own what you build from brief through to live, and you're accountable for whether it actually solves the problem.
Tech Stack - Python
JavaScript/Node.js
React/Next.js
GCP
Vertex AI Claude API
Gemini
LangChain
n8n
Cloud Run BigQuery
PostgreSQL
REST APIs
Docker
Git
What you'll build
Agentic AI workflows using Claude, Gemini, LangChain/LangGraph
Internal tools for Sales, CX, and Operations - dashboards, AI-assisted workflows, and process automation that make Onecom faster
User‑facing AI products that can be commercialised
Integrations across CRMs, ticketing systems, data warehouses, and communication tools
Custom enterprise solutions bespoke solutions for clients where standard products don’t fit
What makes you a great fit
You don’t need to be an expert in everything, but you should be competent across most of the stack and able to learn fast. You’ve built things end‑to‑end before. You can point to something live, explain your decisions, and be honest about what you’d improve. You think about failure modes, not just happy paths. Most importantly: you get things done.
Core Technical Skills
Python and/or JavaScript — you can write clean, production‑quality code
GCP experience – hands on with CGP services (cloud run, Functions, BigQuery, Vertex AI, Firebase)
SQL - comfortable writing and optimising queries against PostgreSQL, MySQL, or BigQuery as part of automation flows
n8n — strong experience; our primary automation platform for orchestrating complex business logic across systems
AI & LLM integration - you’ve shipped something real using Claude, Gemini, GPT, or equivalent
Frontend development - React or Next.js for UI development
API design & integration - REST, OAuth2, webhooks, event‑driven systems
AI Specific Skills
Prompt engineering — you can write and iterate production-quality prompts; familiar with chain-of-thought, few-shot examples, structured JSON output, and system/role prompt design
AI output validation — you know how to build validation and fallback layers around LLM outputs before they hit downstream systems; you don't just call the API and trust the result
AI security & governance — awareness of prompt injection risks, PII handling in AI pipelines, and output sanitisation; you think about what happens when things go wrong
LLM API trade-offs — practical understanding of token limits, temperature, model selection, and when to use which model for wha
Perks For Our People
Holidays: 18 days annual leave, (6 already marked as UK Bank holidays)
7 Indian Public Holiday
7 days casual leave, 7 days sick leave
Onecom is an award-winning provider of Communication Technology, trusted by UK organisations to deliver Simply Brilliant Customer Experiences.
Ed&i
We are committed to equity, diversity, and inclusion, and we encourage candidates to complete our equality monitoring form as part of the application process. Responses are anonymous and help inform our future initiatives.
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