Platform Engineer II - Internal Hosting Platform

Mollie

YOUR OPPORTUNITY At Mollie, we’re on a mission to make payments and money management effortless for every business in Europe. We started 20 years ago when we launched a more direct, affordable way for companies to get paid. That provided an alternative to the frustrating, overpriced solutions that banks offered at the time. Today, we serve more than 250,000 businesses across Europe with an all-in-one solution that simplifies payments and money management. And we’re a 850-strong team of product, finance, support, commerce, and engineering specialists working across Europe – from Lisbon to London. Our Lisbon hub: Situated in the heart of Lisbon at Marques de Pombal, our team of 50+ engineers from 8 different nationalities, are all contributing to Mollie’s mission of delivering an outstanding Merchant Experience through our web and mobile app at the same time that we are scaling and enhancing our Payment Processing and Orchestration Platform This enables the launch of innovative Payments and Financial Products. We take pride in our diverse, English-speaking culture that brings open minds to collaborate and solve financial challenges for our customers. What you will be doing: * Building Large-Scale Systems: Help us design and engineer systems that can scale to manage high volumes of transactions efficiently and effectively. * API and Service Development: Design, build, and maintain APIs, services, and systems across Mollie’s engineering teams.  * Autonomy and Ownership: Lead technical initiatives from architecture design to implementation, ensuring engineering excellence throughout the process.  * Problem-Solving: Utilize your creative problem-solving skills and analytical abilities to resolve complex issues and contribute to our mission of making financial processes effortless. What you will bring: * Always Be Shipping mindset: It’s about consistently delivering value to customers, where speed and quality go hand in hand. * 5+ years of experience in developing large-scale applications, preferably with PHP or Java. Experience with Go, C#, or Python is also valued but you are willing to work with PHP or Java. * Experience in designing systems and handling queuing, caching, concurrency, fault tolerance and scalability. * Excellent communication skills, with experience working effectively with various stakeholders. Creative problem-solving skills and the ability to shape ideas with a product-first approach, as well as analyse and resolve complex issues. Kindly note that relocation support is not offered for this role.

Mollie

Build with us Since 2004, we've had one clear goal: to make payments and money management effortless for every business in Europe. Today, more than 250,000 companies use Mollie to get paid, manage money and grow – with products designed to be simple, scalable, and dependable. With 950+ Mollies across 14+ locations, we care deeply about autonomy and craft. So we work in small teams, with real ownership, and we trust you to make the right decisions. We're building for the long term, so we provide the tools you need, processes you can rely on, and a balanced work environment to help you do work you're proud of. Sound like your kind of place? Let's build together. Your impact The Merchant Experience domain's mission is to craft seamless experiences so every Mollie moment feels intuitive, secure, and supportive. The vision is simple: customers stay focused on growing their business while Mollie just works. We are hiring UI Engineers across the domain. We care deeply about quality and well-designed experiences, not only for our customers, but especially for the engineers building Mollie's products. This means creating clean, well-documented APIs, reliable tooling and smooth workflows that make development, testing, localisation, and releases easier and more predictable. It also means owning the design system and navigation experience that merchants interact with every day, driving engagement, accessibility, and product activation at scale. As a UI Engineer, you bridge the gap between platform capabilities and the teams that rely on them, working across the frontend, backend and infrastructure as needed. This is not a role where you ship one feature and move on. You will have real ownership, real visibility, and the chance to do work that matters at scale.   What you'll ship Depending on which team you join, your work will focus on one of the following areas: App Core * Scale the mobile app architecture to support growing user demand, with a focus on quality and long-term maintainability. * Accelerate the app release cadence by improving and owning the release process, moving from bi-weekly to weekly deployments. * Build reusable patterns, tooling, and documentation that allow engineers across all domains to contribute to the mobile app without needing deep mobile expertise. * Support debugging and feature delivery for teams across Mollie, acting as a platform partner to product teams who depend on the AppCore foundations. App Engagement * Own and evolve the Mollie UI design system, ensuring consistency and quality across web and mobile. * Rebuild and improve the mobile navigation architecture, covering both the system design and the visual experience. * Improve app accessibility in line with compliance standards, making Mollie more inclusive for all merchants. * Strengthen testing practices and automation to raise reliability and reduce regressions across the app. * Own the Upsell infrastructure and in-app messaging that enables targeted campaigns to drive merchant engagement and product activation. What you'll bring * 4 or more years of experience developing mobile apps and web applications, with solid hands-on React and/or React Native experience and a genuine, deep understanding of JavaScript fundamentals at a low level. * Experience with CI/CD pipelines and app release processes. * Comfort working with native browser APIs and language primitives, and enough CSS confidence to implement interfaces using design system components. * A track record of building or maintaining products at medium to large scale, where code quality, reliability, and performance actually matter, including experience with test-driven development and REST API design. * A product-first mindset with end-to-end ownership, from design iteration through to delivery with a focus on user experience and measurable outcomes. * A generalist mindset with strong communication skill. * Always Be Shipping mindset: consistently delivering value to customers, where speed and quality go hand in hand. Grow your way At Mollie, growth is personal. We believe everyone should have the chance to develop their skills, explore new challenges and shape their career on their own terms. You'll get regular feedback and performance reviews to support your development, with fair and transparent salary reviews along the way. Many Mollies move into new roles or take on new projects to stretch themselves, and we actively hire from within to help you take the next step. No matter if you're aiming for promotion, exploring a different career path or building new skills, you'll be supported with the tools, trust and opportunities to grow your way. Unlock your full potential and join us to eliminate financial bureaucracy If you're excited by the idea of building what's next, for yourself and for thousands of businesses across Europe, we'd love to hear from you. Apply with your CV (in English) using the form below. Want a peek behind the scenes? Check out what life at Mollie is really like. AI at Mollie We believe in Always Be Shipping, and AI brings that philosophy to life across every team, every role, every day. AI is core to how we build. It helps us move faster, simplify work and make smarter decisions, creating real impact for the businesses we serve. We're looking for people who are excited to use AI to shape the future of finance with us.

GoCardless

About us GoCardless is a global bank payment company. Over 100,000 businesses, from start-ups to household names, use GoCardless to collect and send payments through direct debit, real-time payments and open banking.  GoCardless processes US$130bn+ of payments annually, across 30+ countries; helping customers collect and send both recurring and one-off payments, without the chasing, stress or expensive fees. We use AI-powered solutions to improve payment success and reduce fraud. And, with open banking connectivity to over 2,500 banks, we help our customers make faster, more informed decisions. We are headquartered in the UK with offices in London and Leeds, and additional locations in Australia, France, Ireland, Latvia, Portugal and the United States. At GoCardless, we're all about supporting you! We’re committed to making our hiring process inclusive and accessible. If you need extra support or adjustments, reach out to your Talent Partner — we’re here to help!  And remember: we don’t expect you to meet every single requirement. If you’re excited by this role, we encourage you to apply! GoCardless are here to support you and we’re committed to making the hiring process inclusive and accessible for everyone. If you need any extra support or any adjustments made, please reach out to your Talent Partner. Remember, we don’t expect you to meet every requirement. If you’re excited by this role, we encourage you to apply PLATFORM ENGINEERING AT GOCARDLESS The Platform Engineering team is a unified, globally distributed team. We are currently located in London, Riga, and Lisbon. We work with all other engineering teams to empower them to build, release, run and scale their products. We operate with a strong focus on both strategic project delivery and operational excellence. Our work is a balance of: * Project Delivery: Building new platform components, from initial design to deployment. * Operational Support: Ensuring the health and stability of our systems through on-call rotations and incident management. * Business as Usual (BAU): Continuous maintenance, improvements, and support for audits and compliance.   Tech stack and tools: * Python, Ruby, Golang; * Terraform; * Atlantis  * AWS, GCP; * Kubernetes, GKE; * Github, GitHub Actions, ArgoCD; * Grafana, Prometheus; * Datadog WHAT EXCITES YOU: We use a wide range of technologies, and will never expect you to have experience with all of them. We do hope that you are enthusiastic about the infrastructure space and the impact your work can have on others. To enjoy this work you’ll be excited by: * Building and maintaining automation of new and existing infrastructure; * Appreciate and believe in building easy-to-understand and maintain tools to solve problems; * Automating operational tasks to eliminate toil using your software development skills and experience; * Ensuring that systems are safe and secure against cybersecurity threats; * Working closely with software engineers and data scientists; * Being involved in the technical design of architecture and making technical decisions; * Cloud-first engineering; * Ongoing opportunities to further develop your skills; * Care about working with people who share the same values as you and who will continually push you to grow. WHAT EXCITES US  * Experience with at least one programming language such as Python, Ruby, Golang etc.; * Experience with IaC tooling, such as Terraform; * Previous experience with Terraform automation toolings such as Terragrunt or Atlantis will be considered an advantage; * Experience with cloud computing providers such as AWS or GCP; * Experience with containerized applications; * Previous experience with container orchestration such as Kubernetes and GKE will be considered an advantage; * Experience with CI/CD tooling such as Github, GitHub Actions, ArgoCD, etc.; * Experience working with monitoring tooling such as Grafana, Prometheus, etc.; * Experience with relational databases and other datastores, especially around high availability and performance optimisation; * Awareness of DevOps and Agile principles; * Fluency in English; * Excellent teamwork and communication skills. Base salary range:  Site Reliability Engineer II: €43,200 to €64,800 gross Site Reliability Engineer III: €58,400 to €87,600 gross Senior Site Reliability Engineer: €76,000 to €114,000 gross Base salary ranges are based on role, job level, location, and market data. Please note that whilst we strive to offer competitive compensation, our approach is to pay between the minimum and the mid-point of the pay range until performance can be assessed in role. Offers will take into account level of experience, interview assessment, budgets and parity between you and fellow employees at GoCardless doing similar work. (SOME OF) THE GOOD STUFF * Wellbeing - stay healthy with dedicated support and medical cover * Work away scheme - gives you the option to work away from your country of residence for up to 90 days in any 12 month period * Adaptive Working - allows you to work flexibly, around your lifestyle * Equity - all permanently employed GCs get equity to help you make a valuable contribution * Parental leave - to suit everyone embarking on life's great adventure * Learning Budget - lead your own development with an annual learning budget * Time off - generous holiday allowance, + 3 annual volunteer days, + 4 annual business-wide wellness days (‘GC Fridays’) LIFE AT GOCARDLESS   We're an organisation defined by our values; We start with why before we begin any project, to ensure it’s aligned with our mission. We act with integrity, always. We care deeply about what we do and we know it's essential that we be humble whilst we do it. Working this way creates the GC magic- the reason we all love showing up to work.  DIVERSITY & INCLUSION As of April 2025, we had 806 employees (GeeCees) globally, with 524 based in the UK, 163 based in Latvia and 119 across our other offices. To ensure that we're representative of the world around us - and to be able to review relevant benchmarks - we ask GeeCees to voluntarily disclose diversity data. This year, the proportion of GeeCees providing data increased to 88% (up from 79% in 2024). With regards to diversity within GoCardless, we can see GeeCees identifying as: Asian, Black, Mixed or Other — 25%  Neurodiverse — 9%  LGBTQIA+ — 9%  Disabled — 1%  Average age — 33 Female — 45% Male —  55%  We’re rooting for you during your application and GoCardless aims to provide reasonable adjustments to make our recruitment process as remarkable and accessible as we can. Please speak to your Talent Partner if you need extra support. If you want to learn more, you can read about our Employee Resource Groups and objectives here Sustainability We’re committed to reducing our impact on the environment, leaving a more sustainable world for future generations. Check out our sustainability action plan here. Find out more about Life at GoCardless via Twitter, Instagram and LinkedIn.