About Numeral
Numeral is a payment technology provider that enables fintechs, payment services providers, and banks to launch new products, expand geographically, comply with payment regulations, and scale their operations with Numeral's cloud-native, API-first payments platform.
We develop and run direct integrations with a network of 30+ partner banks (including BNP Paribas, Barclays, Citi, HSBC, Banking Circle, LHV…) that can all be accessed through a single API, webhooks, and dashboard.
Customers include leading and up-and-coming fintechs like Spendesk, Swile, Alma, WorldFirst, Argentex, Deblock, and 20+ others. We have processed more than 4m payments since our first payment in 2023 and will process more than 10m payments over the next 12 months.
Founded in July 2021, Numeral has been acquired by leading core banking system provider Mambu in December 2024. Mambu’s composable core banking system complements Numeral’s API-first payments platform perfectly. Together, we are poised for hyper-growth, serving both Mambu and non-Mambu customers globally, challenging industry giants like FIS, Bottomline, and Volante, and delivering an even greater impact across our ecosystem.
This acquisition marks an exciting new chapter for Numeral. To support this growth, we are hiring across teams to scale our organisation and continue delivering exceptional customer value.
Our technology stack
Our technology stack is built on a robust microservices architecture, leveraging domain-driven design (DDD) principles and an hexagonal approach to ensure flexibility, scalability, and clear separation of concerns. We prioritize simplicity, maintainability, and adherence to industry best practices, with test-driven development (TDD) at the core of our engineering philosophy.
Our development process is deeply rooted in lean and agile methodologies, fostering a culture of continuous improvement and problem-solving. We embrace an iterative approach, delivering incremental value through frequent releases and short feedback loops.
Backend
* Programming language: Golang
* Messaging: Kafka (AWS MSK)
* Databases: AWS DynamoDB, AWS Aurora PostgreSQL, and AWS RDS
* Caching and In-Memory Data Store: AWS MemoryDB (Redis)
* Search and Analytics Platform: AWS OpenSearch
* Serverless Computing: AWS Lambda
Infrastructure
* Cloud provider: AWS Cloud
* Orchestration: Kubernetes (AWS EKS)
* Infrastructure as code: Terraform
* Monitoring and logging: CloudWatch, Prometheus, Grafana, Datadog…
* CI / CD: GitLab
Frontend
* Programming Language: TypeScript
* Framework: ReactJS
* UI library: Chakra UI
The role
We are seeking a Senior DevOps Engineer to join our team and help drive our cloud infrastructure forward. If you are passionate about automation, infrastructure as code, and cloud technologies, we encourage you to apply even if you don't meet every single requirement.
Responsibilities
* Managing and optimizing our AWS infrastructure, ensuring high availability, scalability, and security.
* Building and maintaining Kubernetes clusters to support our application deployment needs.
* Developing and maintaining infrastructure as code using Terraform to automate provisioning and scaling of cloud resources.
* Monitoring system health and performance with Datadog, Prometheus and Grafana ensuring proactive issue resolution and maintaining service reliability.
* Collaborating closely with Product Management and Engineering teams to ensure smooth and secure delivery of infrastructure solutions.
* Applying best practices in security by design to safeguard both public and internal APIs.
* Identifying and addressing architectural challenges to simplify processes and enhance system performance.
* Conducting code reviews and mentoring peers to maintain high standards of code quality.
* Defining and executing a technical roadmap to improve infrastructure scalability, team efficiency, and reduce technical debt.
Your profile
* Experience in cloud infrastructure management, particularly with AWS, including hands-on experience with services such as EC2, S3, EKS, DynamoDB and RDS.
* Proficiency in managing Kubernetes clusters, with a strong understanding of container orchestration and scaling in production environments.
* Experience with infrastructure as code tools, particularly Terraform, and a solid grasp of infrastructure automation best practices.
* Familiarity with monitoring and observability tools, particularly Datadog, Prometheus and Grafana to ensure system reliability and performance.
* Strong focus on security, with a deep understanding of best practices for securing cloud environments and infrastructure.
* A proactive and autonomous work style, with the ability to identify potential improvements and take initiative to drive them forward.
* Nice to have: Familiarity with CI/CD pipelines and automation, particularly with GitLab and Kubernetes for continuous integration and deployment in a context of Golang services.
* Nice to have: Previous experience in high-availability, large-scale environments, particularly in SaaS platforms.
Compensation and benefits
* Attractive compensation plan including stock options
* Remote-first: work anywhere in Europe and come at your convenience to any Numeral / Mambu office
* International team with 6+ different countries and frequent off-sites
* Choose the best tools and equipment
Our values
* Make our customers win – What drives us is what we enable for our customers. We go all out to allow them to embed payments powering new products, features, and user experiences. We put our customers first. Our mission is to solve their problems, one at a time. We empower them with the best products. We unlock innovation and business.
* No shortcuts – We take great care in what we do so our customers can rely on us. This means taking ownership of problems and solutions, paying attention to details, seeking constant improvement, and never opting for the easy way out.
* Embrace feedback – We use humility to stay at the cutting edge. We seek and give honest feedback, we are excited about learning, and we inspire each other to grow.
* Think big – We want to have an impact by pushing the limits and tackling complex problems. We don’t give up until we reach success and look forward to our next challenge.
* Enjoy the journey together – Entrepreneurship is a journey that is best enjoyed as a team. We enjoy working and spending time together, we inspire each other to achieve great things, and celebrate as a team when they happen.
Hiring process
* Screening call with Numeral / Mambu TAM
* Interview #1
* Interview #2
* Technical test
* 2 reference calls
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