Backend Engineer in Slough

Backend Engineer in Slough

Slough Full-Time 36000 - 60000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build complex financial infrastructure and tackle real-world challenges in international commerce.
  • Company: Join a dynamic startup with a mission to revolutionise global trade.
  • Benefits: Equity, competitive salary, and direct access to the founding team.
  • Why this job: Shape the future of payments and tax systems while making a real impact.
  • Qualifications: Experience in backend systems, preferably with JVM-based languages like Kotlin.
  • Other info: Collaborative culture focused on innovation and problem-solving.

The predicted salary is between 36000 - 60000 £ per year.

About Outpost

Outpost is building the AI global trade engine. The accumulated knowledge of every rule you need to sell internationally, turned into infrastructure. We operate as Merchant of Record or Tax of Record across 58+ tax jurisdictions. Full liability transfer, or just the tax layer. We do the analysis, we handle the setup, we absorb the liability.

Sell anything, anywhere. Without compromise.

The Role

This is a Backend Engineer role for someone who wants to build complex financial infrastructure from scratch. You'll work directly with our engineering leadership to implement payment flows, build tax calculation engines, and create the systems that power international commerce. You'll contribute to product and technical discussions, challenge assumptions, and help guide our technical direction.

We're building the infrastructure that lets businesses sell globally without the usual pain. That means payment processing, multi-currency ledgers, real-time tax calculations, merchant onboarding, and AI-powered compliance tools. Hard problems with real scale.

What You'll Get

Yes, the work is intense. But in return, you'll build critical financial infrastructure that handles hundreds of millions in volume. You'll have significant input into technical direction, work with a small team of experienced engineers, and shape how Outpost scales. If you want to go deep on payments, tax, and fintech infrastructure, this is the role.

What You'll Build

  • Payment processing infrastructure handling hundreds of millions in volume
  • Robust ledger and reconciliation systems
  • Tax calculation engines for multiple jurisdictions
  • Real-time transaction monitoring and risk systems
  • Merchant onboarding and integration frameworks
  • Platform connections with major e-commerce systems
  • AI/LLM powered taxation tools
  • AI/LLM powered fraud and risk tools

What You'll Do

Technical Development
  • Write high-quality, maintainable code
  • Implement core payment and financial systems
  • Build secure, scalable backend services
  • Contribute to system architecture discussions
  • Help establish engineering best practices
System Design & Implementation
  • Design and build robust payment processing flows
  • Implement internal ledger and reconciliation systems
  • Create merchant integration frameworks
  • Develop automated monitoring and alerting
  • Handle secure financial data processing
Cross-functional Collaboration
  • Work with product team to refine technical requirements
  • Contribute to API design and implementation
  • Collaborate with risk and compliance on system requirements

Example Projects

  • Implement a multi-currency ledger that handles real-time reconciliation
  • Create the tax calculation engine for a new jurisdiction
  • Design the merchant onboarding flow and integration framework
  • Build AI-powered tools for automated tax classification
  • Implement real-time fraud detection and risk scoring
  • Create automated reconciliation systems that catch discrepancies before they become problems

What We're Looking For

Ideal background:
  • Fluency in a JVM-based language, preferably Kotlin
  • Track record of implementing complex backend systems
  • Strong engineering fundamentals and coding practices
  • Bonus: experience building financial, payments, tax, or compliance systems
  • Bonus: familiarity with e-commerce platforms
Signals we care about:
  • You write high-quality code and care about maintainability
  • You can design systems, not just implement them
  • You're comfortable with ambiguity and figuring things out
  • You contribute to technical discussions and challenge assumptions
  • You want to build from scratch, not maintain existing systems
  • Bias for action. You ship, you learn, you iterate

What this role is not:

  • Not maintaining existing systems. You'll build from scratch
  • Not a role where you wait to be told what to do
  • Not someone who needs heavy process or detailed specs to be effective
  • Not pure execution without input into technical direction

Why This Role Is Different

Most backend roles are about maintaining or extending existing systems. This role is about building complex financial infrastructure from the ground up. You'll tackle challenges like managing multiple currency ledgers, handling card payment flows, building automated reconciliation systems, and creating AI-powered tax tools. You'll have significant input into our technical direction.

If you're excited about building complex payment systems and want to shape the future of international commerce, this is the role.

Outpost Team

Our team were leaders at Revolut, Airwallex, Adyen and Wayflyer, and we're backed by top-tier investors who have built or backed some of the world's leading fintechs.

What We Offer

  • Equity and salary in a well-funded startup
  • Ability to own your work and move fast
  • Direct access to the founding team
  • A global mission with real impact
  • Low politics, high output
  • A culture of builders, not talkers

Working Style

We work together in person in London. We believe the hardest problems are solved in the room.

Learn More: emile@outpostnow.com

Outpost Culture: Outpost Culture

Outpost founder: Little Goat Labs

Outpost is where the hard problems are. If you want to build the financial infrastructure for global commerce, we'd love to hear from you.

Backend Engineer in Slough employer: Outpost

Outpost is an exceptional employer for Backend Engineers, offering a unique opportunity to build complex financial infrastructure from the ground up in a collaborative and innovative environment. With a focus on low politics and high output, employees enjoy direct access to the founding team, equity options, and the chance to make a real impact on global commerce while working alongside industry leaders in London.
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Contact Detail:

Outpost Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Backend Engineer in Slough

✨Tip Number 1

Network like a pro! Reach out to folks in the industry, attend meetups, and connect with people on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.

✨Tip Number 2

Show off your skills! Build a portfolio showcasing your projects, especially those related to backend systems or financial infrastructure. This will give potential employers a taste of what you can do and set you apart from the crowd.

✨Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. We recommend using platforms like LeetCode or HackerRank to sharpen your skills and boost your confidence before the big day.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our team at Outpost and building something amazing together.

We think you need these skills to ace Backend Engineer in Slough

Fluency in a JVM-based language
Kotlin
Backend System Implementation
Payment Processing
Financial Systems Development
Tax Calculation Engines
System Architecture Design
API Design and Implementation
Automated Monitoring and Alerting
Cross-functional Collaboration
High-quality Code Writing
Maintainable Code Practices
Problem-Solving Skills
Adaptability to Ambiguity
Bias for Action

Some tips for your application 🫡

Show Your Passion: When you're writing your application, let your enthusiasm for building complex financial infrastructure shine through. We want to see that you’re genuinely excited about tackling challenges in payments and international commerce.

Tailor Your Experience: Make sure to highlight your relevant experience with backend systems, especially if you've worked on payment processing or tax calculation engines. We love seeing how your background aligns with what we're building at Outpost.

Be Clear and Concise: Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and focus on what makes you a great fit for the role. Remember, we want to understand your skills and experiences quickly!

Apply Through Our Website: Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for the role. We can’t wait to hear from you!

How to prepare for a job interview at Outpost

✨Know Your Tech Stack

Make sure you’re well-versed in JVM-based languages, especially Kotlin. Brush up on your knowledge of backend systems and be ready to discuss how you've implemented complex solutions in the past. This will show that you can hit the ground running.

✨Showcase Your Problem-Solving Skills

Prepare examples of how you've tackled tough engineering challenges before. Outpost is all about building from scratch, so highlight your experience with designing systems rather than just maintaining them. Be ready to discuss your thought process and the impact of your solutions.

✨Engage in Technical Discussions

During the interview, don’t hesitate to ask questions or challenge assumptions. This role requires collaboration and input into technical direction, so demonstrating your ability to engage in meaningful discussions will set you apart.

✨Demonstrate a Bias for Action

Outpost values candidates who ship, learn, and iterate. Share examples of projects where you took initiative and drove results. Show that you’re comfortable with ambiguity and can adapt quickly to changing requirements.

Backend Engineer in Slough
Outpost
Location: Slough

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