About Junior
We’re building cutting-edge LLM-powered workflow tools to supercharge investment research for private market investors. Our clients include most of the global top 10 private equity and consulting firms - Junior already powers hundreds of billions of dollars invested annually. We’re a profitable, bootstrapped company with a growing team of 40+ based in London, NYC and Sydney. We 10x’d our revenue in 2025.
You can read more about the company mission & values here.
Role Description
You’ll design and build the systems that support our you’ll help build and scale the systems that power our AI-driven research platform along with our commercial, product, and operations teams — automating workflows, improving decision‑making, and enabling the company to move significantly faster.
This is a high‑ownership backend engineering role (~4+ years experience) where you’ll work across data pipelines, integrations, automation, and internal infrastructure.
You’ll have the opportunity to:
- Architect and scale backend systems that support high‑throughput LLM interactions, vector search, and multi‑agent orchestration.
- Stitch together AI infrastructure across model providers, data stores, and internal APIs to create cohesive, performant systems.
- Own the architecture of internal data systems and pipelines
- Build automation and integrations across product, CRM, and financial systems
- Help shape engineering culture and internal infrastructure decisions
Example Projects You’ll Work On:
Customer Health Intelligence System
- Design data pipelines that consolidate product usage, CRM data, and user feedback into a unified system of record.
- Build automated signals and alerts that detect churn risk, usage drops, or emerging product issues - enabling the team to act quickly.
User Feedback → Product Development Pipeline
- Build internal tooling that processes feedback calls with users.
- Use LLMs to extract themes, cluster feature requests, and surface the most important insights to the product team.
Billing & Revenue Infrastructure
- Design systems to support complex B2B pricing models — combining usage‑based, seat‑based, and platform fees.
- Automate invoicing, reconciliation, and financial reporting.
Internal Data Platform
- Build and own our internal data platform, integrating product telemetry, CRM data, and financial systems.
- Create reliable pipelines and APIs that power reporting, automation, and decision‑making across the company.
About You
We’re looking for a Backend Engineer who enjoys building systems that make a company run better.
You might be a good fit if you:
- Are based in London and excited to work from our Farringdon office (5 days/week)
- Have experience owning technical projects end‑to‑end, from architecture through production
- Enjoy translating business problems into clean technical systems and automation
- Like building high‑leverage internal platforms that make teams dramatically more efficient
- Have strong experience with PostgreSQL and modern data platforms (Snowflake, BigQuery, Databricks, Firebolt, etc.)
- Write production code in Python, or TypeScript
- Thrive in fast‑moving startup environments and enjoy shipping quickly while maintaining strong engineering standards
Bonus
- Experience building AI‑enabled workflows, automation systems, or internal developer platforms.
Benefits
- Private health insurance
- Third Space membership
- Dinner when working late
- Frequent team offsites (Crete, Upstate NY, Cancun)
