---
title: 'Senior Backend Engineer at Xapien'
canonical: 'https://feeny.ai/job/senior-backend-engineer-xapien-london-z1k5k3hk04f9'
type: 'job'
last_seen: '2026-09-09'
---

# Senior Backend Engineer at Xapien

- **Company:** Xapien
- **Location:** London, United Kingdom
- **Compensation:** £80k–£130k
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-03-26
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/xapien/27898e8d-92a4-4267-b7e2-037d64e69c4d/application

**Skills:** Go, MongoDB, Kubernetes, Docker, Microservices, Event-driven architectures, gRPC, REST APIs, Grafana, GCP, Temporal, Kafka, LLMs, AI integration, Prometheus, protobuf, RAG systems, OpenAI, Gemini

> Xapien is hiring a Staff Backend Engineer to lead technical architecture and drive the development of scalable Go microservices. The role involves mentoring engineers, establishing technical standards, and owning complex backend systems within a high-growth AI due diligence platform.

## Job description

## About Us

Every business needs to know who they’re really working with whether it’s suppliers, investors, partners, or third parties. At Xapien, we’re reinventing how organisations do that, combining speed, scale and accuracy with cutting-edge AI.

Since 2018, we’ve grown from a deep-tech startup to a global player in AI-driven due diligence and risk intelligence. 2024 was a landmark year as we closed a $10M Series A, earned recognition in the Chartis RiskTech100® and Everest Group’s Leading 50™, and expanded our products, markets and customer base.

2025 was even bigger: With new regulations, rising compliance pressure and growing reputation risks, organisations everywhere are demanding smarter, faster ways to work and they’re turning to us. Customers worldwide from global law firms and private banks to universities and nonprofits rely on Xapien to turn days of manual research into trusted insights, delivered in minutes.

Our momentum so far

Customers in a diverse range of industries, with particular growth in wealth management, financial services and supply chain onboarding.

Demand accelerating beyond our UK headquarters, across multiple continents with new customers in the Middle East, Asia, and Oceania.

Why this is an exciting time to join

This isn’t just another job role; it’s an opportunity to shape the future of the due diligence industry with a market-leading product trusted by global organisations. Whether you’re in marketing, communications, sales, or finance, you’ll play a critical role in driving growth, building credibility, and defining how we connect our product to a rapidly evolving market.

We’re scaling fast with more customers, more releases, and bigger regulatory and market challenges. Expectations are rising, due diligence now means real-time insight, delivered efficiently and with impact. You won’t just be executing campaigns, closing deals, or managing numbers, you’ll be influencing strategy, optimising processes, and helping position a brand that’s setting the new standard for trust and transparency.

For people who love learning, innovating, and making an impact that matters now is the moment to be a part of Xapien.

## THE ROLE

We're hiring a Staff Backend Engineer to join our engineering team in a high-impact technical leadership role. You'll work on our most challenging technical problems, own parts of our platform’s architecture, and help shape the technical direction of our backend stack.

Our tech stack center’s on Go microservices, with Temporal workflows, MongoDB and ElasticSearch running on Kubernetes in GCP. You'll work with modern patterns including event-driven architectures, gRPC and REST APIs, and comprehensive observability with Grafana Cloud.

You'll take technical ownership of major domains within our platform - whether that's our Investigations pipeline (web scraping, data provider integrations, LLM-powered analysis) or our Core App systems (user journeys, features, and configuration). You'll be a technical authority, establishing patterns that others follow and driving initiatives that span multiple teams.

## WHAT YOU'LL DO

- Own the technical direction and architecture for parts of our platform
- Design and build complex backend services and systems that scale
- Drive technical decisions that affect multiple teams
- Establish patterns, standards, and best practices that others will follow
- Lead complex technical initiatives from design through implementation
- Identify and address systemic technical challenges across our backend
- Write exemplary Go code that sets the standard for quality and design
- Mentor engineers across the organization, raising the technical bar
- Balance technical excellence with pragmatic delivery
- Influence technology choices and architectural direction
- Collaborate with engineering leadership on technical strategy
- Build new systems and features while improving our existing architecture

## WHAT WE'RE LOOKING FOR

## ESSENTIAL

- 10+ years of professional software engineering experience
- Deep expertise in Go, with mastery of concurrency, performance optimization, and advanced patterns
- Proven track record of designing and owning large-scale systems
- Strong experience with distributed systems, event-driven architectures, or similar complex systems
- Deep understanding of databases, particularly MongoDB or similar NoSQL systems
- Extensive experience with microservices architecture and inter-service communication
- Expert-level understanding of containerization (Docker) and orchestration (Kubernetes)
- Experience establishing technical standards and patterns across teams
- Strong architectural thinking with ability to balance trade-offs
- Track record of mentoring and developing other engineers
- Ability to drive technical initiatives with minimal guidance
- Experience influencing technical direction at an organizational level
- Excellent communication skills with ability to articulate complex technical concepts

## HIGHLY DESIRABLE

- Experience with Temporal or similar workflow orchestration systems at scale
- Deep knowledge of event streaming platforms like Kafka
- Experience with LLMs and AI integration (particularly for Investigations team)
- Background in SaaS platforms or B2B products at scale
- Expert-level knowledge of observability tools (Grafana, Prometheus, etc.)
- Deep understanding of authorization patterns, security, and multi-tenancy
- Experience with protobuf and gRPC

## OUR TECH STACK

- Languages: Go
- Databases: MongoDB
- Messaging & Orchestration: Temporal, Kafka
- APIs: REST, gRPC, protobuf
- Infrastructure: Kubernetes, GCP
- Observability: Grafana stack
- AI: LLMs (OpenAI, Gemini), RAG systems

## WHAT SUCCESS LOOKS LIKE

In your first 6 months, you will have:

- Owned and driven a significant technical initiative to completion
- Established new patterns or improved existing ones across teams
- Mentored multiple engineers, visibly raising technical standards
- Contributed to architectural decisions
- Been recognized as a technical authority in your domain
- Made measurable improvements to system reliability, performance, or scalability
- Influenced the technical direction of our backend platform

Here’s our promise to you:

- We are going to work with you - to build a rewarding and fulfilling career with the opportunities, challenges and resources you need to do you your best work.
- We succeed together- you will own a meaningful part of the business through our employee shares & equity programme.
- Private health insurance to keep you in tip-top condition.
- Life Insurance – let's hope nobody ever needs this!
- Unlimited holidays – yes, it really is uncapped – take the time you need, when you need it.
- Everyone is learning, developing and challenging themselves so we have a £1k professional development fund per year if you want to learn new skills, even new things outside of work.
- Most importantly of all, we will work with you, to help you realise your fullest potential, always.

## About Xapien

## Company Overview
- **One-liner**: Xapien provides an AI-powered due diligence platform that delivers comprehensive risk research on any person or company in minutes.
- **Entity Type**: Private (funded; total funding $12.5M, including a £6M seed round closed in 2023)
- **Headquarters**: London, United Kingdom (Moorgate) and Boston, United States (Seaport District)
- **Founded**: 2018
- **Founders**: Dan Secretan and Shaun O’Mahony

## Core Business
- Primary industry/industries: RegTech, Risk & Compliance, Due Diligence, AI Software
- Target customers: B2B – compliance teams, financial institutions, law firms, consultancies, and enterprises needing third-party risk research
- Mission or purpose statement: “Powering trust in global business” – establishing a new standard for due diligence without compromise.

## Products & Services
- **Xapien Platform**: An enterprise-grade AI resolution engine that automatically researches any person or company across the entire indexed internet and any connected data sets. It delivers a unified view with full sourcing, multilingual capabilities, and false-positive removal. Available as a SaaS platform.
- **Integrity Check (powered by Xapien)**: A product built in partnership with Dow Jones Risk & Compliance, providing streamlined integrity screening.
- **Xapien Xchange**: A user community and forum for sharing best practices and product feedback.
- **‘Ask Xapien’**: A dynamic in-report research feature that allows users to query the platform conversationally within a report.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total funding of $12.5M (as of 2023); annual revenue of approximately $2.0M (LinkedIn estimate)
- **Notable Investors/Partners**: Initial angel investors; Founders Factory accelerator (sponsored by Aviva); Chris Pilling (Chairman); Partners: Dow Jones Risk & Compliance, ComplyAdvantage, OpenCorporates, Sayari, Pinsent Masons.
- **Growth Signals**: 75 employees (+41.9% YoY); US revenue grew to 43% of ARR without in-country hires; partner revenue reached 30% of ARR; opened a Boston office in 2026; expanded into Asia-Pacific; recognised in Chartis RiskTech100, KYC Solutions, and FCC50 reports; joined TechNation Upscale and Google AI First accelerator.

## Competitive Advantages
- **Purpose-built AI**: Designed specifically for due diligence, not a general-purpose LLM – includes advanced multilingual research, entity resolution, and false-positive removal.
- **Comprehensive coverage**: Processes information across all languages and jurisdictions, pulling from the entire indexed internet plus proprietary data sets.
- **Speed and automation**: Reduces onboarding times by 65% and AML check hours by 90%, enabling low-risk clients to be onboarded in one day.
- **Full sourcing and auditability**: Every fact in a report is sourced, making it suitable for regulated environments.
- **Enterprise integrations**: Integrates painlessly into existing workflows and scales with bulk-processing capabilities.

## Strategic Focus
- **Geographic expansion**: Growing US presence (Boston office) and Asia-Pacific footprint.
- **Product development**: Launching next-generation features including configurable report templates, bulk-processing, and enhanced speed/accuracy.
- **Partnership ecosystem**: Deepening alliances with global consultancies and law firms (e.g., Pinsent Masons) and expanding partner revenue.
- **Scaling enterprise adoption**: Targeting large financial institutions and multinational corporations with enterprise-grade capabilities.

## Why Work Here
- **Culture**: “Bright minds with hard problems” – a deeply technical environment with AI engineers, computational linguists, ML developers, and PhD scientists. Emphasis on intelligent problem-solving, supportive teamwork, and equitable tech culture.
- **Work policy**: Hybrid working (access to WeWork offices in London and Boston); flexible schedules.
- **Perks**: Unlimited holidays (uncapped), competitive salary with regular reviews, highly-competitive bonus plan, meaningful equity for all employees, 4-figure wellness and development budget per year, top-of-the-range kit, health insurance, life insurance, pension/401k, and proactive focus on financial, mental, and physical wellbeing. Regular team lunches, drinks, and activities.
- **Growth**: Fast-growing company (75 people, +41.9% YoY) with many open roles across engineering, product, and go-to-market. Opportunity to shape product and culture.

## Sources
1. [xapien.com](https://xapien.com/)
2. [xapien.com/about-us](https://xapien.com/about-us/)
3. [xapien.com/careers](https://xapien.com/careers/)
4. [xapien.com/the-team](https://xapien.com/the-team/)
5. [linkedin.com](https://uk.linkedin.com/company/xapien-ai)

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