---
title: 'Staff Software Engineer - Experimentation & Decisioning Platform at Checkout.com'
canonical: 'https://feeny.ai/job/staff-software-engineer-experimentation-decisioning-platform-checkout-com-ea0n9c8x0q48'
type: 'job'
last_seen: '2026-09-07'
---

# Staff Software Engineer - Experimentation & Decisioning Platform at Checkout.com

- **Company:** [Checkout.com](https://feeny.ai/companies/checkout-com)
- **Location:** Amsterdam, Netherlands
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-26
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/checkout.com/b232645c-ed71-4c7a-8274-8a0e03220300

## Job description

Company Description

We’re http://checkout.comCheckout.com http://Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.

We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.

Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.

If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.

With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.

## The role

Global payments are complex, high-throughput, and ever-evolving. At Checkout.com http://Checkout.com, our software engineers develop the next-generation financial technologies that empower merchants to optimize acceptance rates, combat fraud and unlock seamless customer experiences. As a Staff Software Engineer within our Payments Performance pillar, you will step into a critical role of strategic technical leadership. It is rooted in your profound depth of technical expertise and a wide breadth of organizational influence. You will guide the technical approach for your group, aligning multiple engineering teams on architectural priorities, unblocking complex obstacles, and balancing technical excellence with pragmatism for impact. We are looking for someone with a background building robust, automated experimentation or decision engines at a global scale.

## How you’ll make an impact

- Drive the long-term technical direction and strategy for the Experimentation and Optimisation platform, looking beyond immediate requirements to ensure our solutions are built for impact and scale.
- Collaborate cross-functionally with Data Science, Platform and ML Engineering teams to shape what we build, not just how.
- Act as a coach and mentor to our engineering teams, providing the technical leadership needed to solve complex distributed systems challenges in Go.
- Proactively identify opportunities and take initiative to elevate the engineering standards within the pillar, fostering a culture of continuous improvement.
- Participate, translate, run and execute the collection of requirements and architecture/design initiatives into clear, actionable engineering roadmaps.
- Serve as a role model for engineering excellence, championing best practices in code, architecture and operational excellence.

## What we’re looking for

- Technical leadership: setting direction, breaking down complex problems, influencing across teams.
- Extensive, hands-on experience in building, operating and scaling complex, cloud-based distributed systems (we use mainly AWS).
- Excellent programming skills in Go (Golang), with a deep understanding of concurrent, memory-efficient, and low-latency backend architectures.
- A strong engineering background with a proven track record of implementing, owning, and scaling experimentation systems, feature-flagging infrastructures, or similar data-intensive backend systems.
- A proven ability to raise the bar for engineering standards through effective coaching, mentorship, and a relentless drive for platform improvement.
- Strong presentation, communication, and collaboration skills, with the ability to articulate complex technical or statistical concepts to multidisciplinary teams and influence positive outcomes across the organization.
- A detail-oriented and data-driven approach to building infrastructure solutions where accuracy, thoroughness, and low latency are absolutely critical.
- You take initiative and are deeply accountable to your internal customers and engineering colleagues.
- Bonus: experience with implementing solutions for adaptive experimentation ML (contextual bandits, Bayesian optimization or RL-based allocation)

Additional Information

Bring all of you to work

We create the conditions for high performers to thrive, through real ownership, fewer blockers, and work that makes a difference from day one.

Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity, and where your growth is in your hands.

We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.

It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.

Life at Checkout.com http://Checkout.com

We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.

Curious about what it’s like to be part of our team? Visit our Careers Page https://www.checkout.com/careers to learn more about our culture, open roles, and what drives us.

For a closer look at daily life at Checkout.com http://Checkout.com, follow us on LinkedIn https://www.linkedin.com/company/checkout/life/ and Instagram https://www.instagram.com/checkout_com/

## About Checkout.com

## Company Overview
- **One-liner**: Checkout.com is a global, high-performance payment platform that enables enterprises to accept payments, move money, and optimize revenue through a modular, AI-powered suite of services.
- **Entity Type**: Private (Series D, last funding round Jan 2022)
- **Headquarters**: London, England, United Kingdom
- **Founded**: 2012
- **Founders**: Guillaume Pousaz

## Core Business
- **Primary industry**: Payments / FinTech (online payment processing, acquiring, fraud management, money movement)
- **Target customers**: B2B – primarily enterprise merchants and high-growth digital businesses (e.g., e-commerce, travel, food delivery, marketplaces)
- **Mission or purpose**: To turn payments into a powerful revenue driver for businesses by obsessing over every basis point of performance.

## Products & Services
- **Connect**: Accept payments online via a single API, supporting 150+ currencies and local acquiring in 50+ countries.
- **Move**: Simplify global money movement, including payouts, refunds, and supplier payments (e.g., via Visa Direct).
- **Boost** (Intelligent Acceptance): AI-powered engine that optimizes payment routing and retries to increase conversion rates.
- **Protect**: Fraud detection, authentication, identity verification, and chargeback management tools.
- **Manage**: Centralized dashboard for monitoring payments, balances, and analytics across all geographies.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company; last Series D raised $1B at a reported valuation of $40B in Jan 2022 per news, but this is not confirmed in search results – treat as unconfirmed)
- **Key Metric**: Processed $300B in total ecommerce payment volume in 2025 for enterprise merchants (source: checkout.com homepage); total funding raised: $1.8B (Crunchbase)
- **Notable Investors/Partners**: Franklin Templeton, Ribbit Capital (among 14 investors per Crunchbase); partner with Visa Direct; named a Leader in The Forrester Wave™: Merchant Payment Providers, Q1 2026
- **Growth Signals**: 19 offices worldwide; 1,000–5,000 employees; serves category-defining businesses (e.g., Klarna, Grab, The Trade Desk, etc. as shown in case studies); AI-powered Intelligent Acceptance delivering 4–6% uplift in acceptance rates for clients.

## Competitive Advantages
- **Proprietary technology**: Cloud-native, self-healing infrastructure with high uptime and local acquiring in 50+ countries.
- **AI-first optimization**: Intelligent Acceptance engine uses network data and machine learning to maximize conversions.
- **Modular platform**: Products work standalone or together, allowing merchants to customize their payment stack.
- **Enterprise scale**: Proven ability to handle billions in volume for global merchants.
- **Single platform for issuing and acquiring**: Recently unified issuing and acquiring to improve liquidity and control for travel and other verticals.

## Strategic Focus
- **AI acceleration**: Going all-in on AI across products and internal operations (see blog “How we’re using AI to accelerate our velocity”).
- **Agentic commerce**: Preparing for AI-driven shopping agents by developing merchant-controlled checkout models and chargeback strategies.
- **Expanding money movement**: Enhancing payout capabilities (e.g., Visa Direct partnership) and virtual card issuing.
- **Global reach**: Continuing to add local acquiring markets and payment methods.

## Why Work Here
- **Culture**: High-performance, ownership-driven environment with values like “Athlete Mindset”, “Never Give Up”, “Talk Straight”, and “One Team”. Emphasis on continuous improvement, data-driven decisions, and speed.
- **Hybrid policy**: Required in-office Tuesday, Wednesday, Thursday (as of Aug 2025). Also offers “Work from Anywhere” options and flexibility.
- **Diversity & belonging**: Nine employee-led communities (Ability+, Arab, Asian, Black, Jewish, Latine, Parents, Pride, Women). Committed to inclusive hiring and accessibility.
- **Benefits**: Comprehensive health and wellbeing cover, family-forming support, high-quality food in offices, volunteering days, sustainable pace with time away, and choice/control over rewards.
- **Growth**: Fast-paced environment with early ownership, global opportunities, and a focus on learning (continuous development resources).
- **Hiring process**: Four stages – recruiter screen, first interview, task/challenge, final interview. Typically 4–6 weeks. Feedback provided after each stage.

## Sources
1. [checkout.com](https://www.checkout.com/?ref_type=adv)
2. [checkout.com/life-at-checkout](http://www.checkout.com/life-at-checkout)
3. [checkout.com/jobs](https://www.checkout.com/jobs)
4. [checkout.com/careers](https://www.checkout.com/careers)
5. [crunchbase.com](https://www.crunchbase.com/organization/checkout-com)

## Other roles at Checkout.com

- [Specialist, Deal Management](https://feeny.ai/job/specialist-deal-management-checkout-com-london-5p97jv2ts35a) — London, United Kingdom
- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-checkout-com-shanghai-barnj3ynp55w) — Shanghai, China
- [Senior Product Designer](https://feeny.ai/job/senior-product-designer-checkout-com-london-5fgfsnv3t964) — London, United Kingdom
- [Senior Software Engineer I](https://feeny.ai/job/senior-software-engineer-i-checkout-com-paris-wr0kt0e3b4hv) — Paris, France
- [Senior Data Analyst, People Analytics](https://feeny.ai/job/senior-data-analyst-people-analytics-checkout-com-london-714nm12wg69j) — London, United Kingdom
- [Senior Engineer I, Payments Engineering](https://feeny.ai/job/senior-engineer-i-payments-engineering-checkout-com-tallinn-7jjj5079vhm8) — Tallinn, Estonia
- [Risk Monitoring Analyst](https://feeny.ai/job/risk-monitoring-analyst-checkout-com-home-based-wfqqqx94sj5k) — Home-Based, Mexico
- [Project Manager - Integrations](https://feeny.ai/job/project-manager-integrations-checkout-com-paris-84xf2n607d8x) — Paris, France
- [Principal, CEO Office](https://feeny.ai/job/principal-ceo-office-checkout-com-london-bqbadmpsrf6h) — London, United Kingdom
- [Senior Manager, External Affairs - UAE](https://feeny.ai/job/senior-manager-external-affairs-uae-checkout-com-dubai-xrny5xcngdvw) — Dubai, United Arab Emirates