•Are you curious, excited by experimentation and always looking to innovate?
•Do you want to work in embedded payments where you can keep learning and developing whilst getting hands-on experience?
•Do you want to have the opportunity to play an important role in a rapidly growing and exciting Fintech business?
If so, we would love to connect and collaborate!

About us
At Modulr, our vision is a world where all businesses are powered by embedded payments. Modulr enables businesses, from SMEs to Enterprise, initially across the UK and Europe to efficiently pay-in, collect and disburse funds instantly via a range of payment schemes, accounts, and card products.
We have created an industry-leading API platform with comprehensive online tools and access, to meet the demands of daily business payments. We have two routes to market. Our Core Business Payments product allows customers in any sector to connect to us and our expanding network of accounting and payroll platforms, including Sage, Xero, BrightPay and IRIS to automate payments. Our Vertical Solutions targets a growing range of industry verticals which directly connect their IT platforms to our APIs and webhooks. We solve complex payment problems for hundreds of clients in a range of industries, including Travel, Lending, Wage Advance, and Investment & Wealth.
We are deeply integrated into the payment eco-system. In the UK, we are direct participants of Faster Payments and Bacs. Modulr hold settlement accounts at the Bank of England. Our payment network connectivity includes CHAPS, Open Banking, SEPA, SWIFT and account issuance in multiple currencies. We are principal issuing members of Visa and Mastercard schemes across UK and Europe. Our regulatory permissions and governance structure are the foundations of our business. We are regulated and supervised as an Authorised Electronic Money Institution (AEMI) in the UK by the Financial Conduct Authority and in the Netherlands by De Nederlandsche Bank.
Our founding team has a wealth of experience in the payments industry and growing successful businesses. Modulr is backed by the venture arms of payments giants PayPal and FIS, as well as growth investors Blenheim Chalcot, General Atlantic, Frog Capital and Highland Europe.
Modulr now has over 400 employees spread globally across offices in London, Edinburgh, Amsterdam, and Mumbai.

Modulr values
•Building the extraordinary; going that extra mile.
•Owning the opportunity; be passionate and proud of the time you invest.
•Move at pace; reach goals faster whilst supported on your career journey.
•Achieve it together, working collaboratively and being a Modulite.

About the Role:
We are looking for a passionate Data Scientist with 2–3 years of experience to build ML/DL and Generative AI solutions for high-impact financial use cases.

Key Responsibilities:
• Develop ML/DL models for fraud detection, risk scoring, and personalization
• Build and deploy GenAI applications using LLMs
• Design and implement Agentic AI workflows
• Work with LangChain and LangGraph for orchestration
• Use tools like Claude, Cursor/CoPilot for AI-assisted development
• Implement monitoring using LangSmith
• Build APIs for model deployment
• Collaborate with cross-functional teams
• Maintain MLOps pipelines and CI/CD workflows

Key Requirements:
• 2–3 years experience in Data Science / ML / DL
• Strong Python skills
• Experience with ML frameworks (PyTorch, TensorFlow, XGBoost)
• Hands-on with GenAI, LLMs, prompt engineering
• Experience with LangChain, LangGraph
• Familiarity with Agentic AI concepts
• Exposure to tools like Claude, Cursor/CoPilot
• Experience with LangSmith for debugging/monitoring
• Knowledge of APIs, FastAPI/Flask, Docker
• Experience with MLOps tools (MLflow, DVC)
• FinTech domain experience preferred

ModInclusion 

We believe that by seeing Modulr, and the world, from all sorts of angles, we can make life better for all.​ We want you to know that the things that make you, you — like your identity, age, ability, and background — are things that we will always celebrate and support with open arms.  As such, we are keen to maximise the diversity of our workforce and actively encourage applications from anyone and everyone.

Are you curious, excited by experimentation and always looking for a better way of doing things?

• Do you want to keep learning and developing whilst getting hands-on experience working in the embedded payments space?
• Do you want to have the opportunity to be a key member of our automation team?

If so, we would love to connect and collaborate!

We want to hire ambitious, and value-adding talent into Modulr, one of the fastest growing payments businesses in the UK and Europe. Modulr is experiencing significant growth, and in this role you will work in a cross-functional team who are asked to solve a problem, rather than be handed a task to do. This is an excellent opportunity to work in a high-growth environment with a fast-paced and collaborative culture where you will have great opportunities to work on challenging problems.

About us

At Modulr, our vision is a world where all businesses are powered by embedded payments. Modulr enables businesses, from SMEs to Enterprise, initially across the UK and Europe to efficiently pay-in, collect and disburse funds instantly via a range of payment schemes, accounts, and card products.
We have created an industry-leading API platform with comprehensive online tools and access, to meet the demands of daily business payments. We have two routes to market. Our Core Business Payments product allows customers in any sector to connect to us and our expanding network of accounting and payroll platforms, including Sage, Xero, BrightPay and IRIS to automate payments. Our Vertical Solutions targets a growing range of industry verticals which directly connect their IT platforms to our APIs and webhooks. We solve complex payment problems for hundreds of clients in a range of industries, including Travel, Lending, Wage Advance, and Investment & Wealth.
We are deeply integrated into the payment eco-system. In the UK, we are direct participants of Faster Payments and Bacs. Modulr hold settlement accounts at the Bank of England. Our payment network connectivity includes CHAPS, Open Banking, SEPA, SWIFT and account issuance in multiple currencies. We are principal issuing members of Visa and Mastercard schemes across UK and Europe.

Our regulatory permissions and governance structure are the foundations of our business. We are regulated and supervised as an Authorised Electronic Money Institution (AEMI) in the UK by the Financial Conduct Authority and in the Netherlands by De Nederlandsche Bank.
Our founding team has a wealth of experience in the payments industry and growing successful businesses. Modulr is backed by the venture arms of payments giants PayPal and FIS, as well as growth investors Blenheim Chalcot, General Atlantic, Frog Capital and Highland Europe.
Modulr now has over 400 employees spread globally across offices in London, Edinburgh, Amsterdam, and Mumbai.

Modulr values
•Building the extraordinary; going that extra mile.
•Owning the opportunity; be passionate and proud of the time you invest.
•Move at pace; reach goals faster whilst supported on your career journey.
•Achieve it together, working collaboratively and being a Modulite.

The Team
At Modulr we are focused on building autonomous squads that are focused on working in the best possible way. We operate in a tribes and squad model with each area focused on a particular growth area. Each squad is small and cross-functional. We have big ambitions and have many interesting challenges ahead. Our strategy is to provide our customers with seamless connectivity into payment schemes both domestically and overseas no matter where they're based.
Specific duties
Depending on the project, you will need to be comfortable doing the following:
•Delivery of enhancements and configuration changes; understanding requirements, coding, testing and implementing these to broaden the usage of Salesforce.
•Supporting, maintaining and improving the working of existing Salesforce environment for optimal functionality.
•Creating and maintaining integrations with other applications and systems using web services and APIs.
•Ensuring compliance with security and development standards of Salesforce.
•Develop and maintain custom solutions on the Salesforce platform using Apex, flows and other technologies.
•Work collaboratively with technical teams to deliver business requirements.
•Develop and maintain Salesforce integrations and third-party applications.
•Participate in code reviews to ensure that the best practices for the existing and new Salesforce solutions are implemented.
•Stay updated with new Salesforce features & functionalities and recommend best practices to enhance the existing Salesforce implementations.

About you
•Proficient understanding of CRM administration/customisation, including Salesforce lightning framework, Salesforce Sales cloud and Salesforce Community cloud.
•Practical knowledge of automation with AI tools in the CRM space. E.g., Agentforce
•5-8 years’ experience of Apex, LWC, Aura, flows, DevOps and continuous integration/deployment (CI/CD) processes.
•In depth understanding of Salesforce data model, including standard and custom objects, relationships and fields.
•Salesforce certifications like Platform Developer I or II, App Builder, Administrator, JavaScript.
•Experience in a Robust communication skills to work in a fast-paced environment.
•Knowledge of HTML, CSS, JavaScript and jQuery.

ModInclusion
At Modulr, we are working hard to build a more positive diverse and inclusive culture that helps everyone to feel they belong and can truly bring their whole self to work. Not only is it the right thing to do for everyone in the Modulr team, it’s also the right thing to do for our business, the community we operate in and attracting future talent. As part of our approach, we actively welcome applications from candidates with diverse backgrounds.

•Are you curious, excited by experimentation and always looking to innovate?
•Do you want to work in embedded payments where you can keep learning and developing whilst getting hands-on experience?
•Do you want to have the opportunity to play an important role in a rapidly growing and exciting Fintech business?

If so, we would love to connect and collaborate!

We want to hire ambitious, and value-adding talent into Modulr, one of the fastest growing payments businesses in the UK and Europe. Modulr is experiencing significant growth, and in this role you will work in a cross-functional team who are asked to solve a problem, rather than be handed a task to do. This is an excellent opportunity to work in a high-growth environment with a fast-paced and collaborative culture where you will have great opportunities to work on challenging problems.

About us
At Modulr, our vision is a world where all businesses are powered by embedded payments. Modulr enables businesses, from SMEs to Enterprise, initially across the UK and Europe to efficiently pay-in, collect and disburse funds instantly via a range of payment schemes, accounts, and card products.
We have created an industry-leading API platform with comprehensive online tools and access, to meet the demands of daily business payments. We have two routes to market. Our Core Business Payments product allows customers in any sector to connect to us and our expanding network of accounting and payroll platforms, including Sage, Xero, BrightPay and IRIS to automate payments. Our Vertical Solutions targets a growing range of industry verticals which directly connect their IT platforms to our APIs and webhooks. We solve complex payment problems for hundreds of clients in a range of industries, including Travel, Lending, Wage Advance, and Investment & Wealth.
We are deeply integrated into the payment eco-system. In the UK, we are direct participants of Faster Payments and Bacs. Modulr hold settlement accounts at the Bank of England. Our payment network connectivity includes CHAPS, Open Banking, SEPA, SWIFT and account issuance in multiple currencies. We are principal issuing members of Visa and Mastercard schemes across UK and Europe.
Our regulatory permissions and governance structure are the foundations of our business. We are regulated and supervised as an Authorised Electronic Money Institution (AEMI) in the UK by the Financial Conduct Authority and in the Netherlands by De Nederlandsche Bank.
Our founding team has a wealth of experience in the payments industry and growing successful businesses. Modulr is backed by the venture arms of payments giants PayPal and FIS, as well as growth investors Blenheim Chalcot, General Atlantic, Frog Capital and Highland Europe.
Modulr now has over 400 employees spread globally across offices in London, Edinburgh, Amsterdam, Mumbai and Pune.

Modulr values
•Building the extraordinary; going that extra mile.
•Owning the opportunity; be passionate and proud of the time you invest.
•Move at pace; reach goals faster whilst supported on your career journey.
•Achieve it together, working collaboratively and being a Modulite.

The Team
At Modulr we are focused on building autonomous squads that are focused on working in
the best possible way. We operate in a tribes and squad model with each area focused on
a particular growth area. Each squad is small and cross-functional. We have big ambitions and have many interesting challenges ahead.
Summary
In this role you will design, build, and evolve the next generation of Modulr’s event-driven payments platform. You’ll work across the full engineering lifecycle—from shaping technical approaches to delivering production-grade software—within a squad that values ownership, excellence, and continuous improvement.

Specific duties 

Engineering & Architecture
•Design and develop backend services using Java (17+) or similar OO languages.
•Build and evolve microservices and distributed, event-driven components in a cloud-native environment.
•Contribute to architectural patterns that support throughput, resilience, reliability, and observability.
•Design clean, well-documented RESTful APIs and service contracts.
•Work with relational data stores, especially PostgreSQL, and contribute to data modelling.
Distributed Systems & Reliability
•Engineer solutions for concurrency, idempotency, fault tolerance, retries, and high availability.
•Improve system performance, reduce latency, and identify bottlenecks across services.
•Build systems with strong observability—logs, metrics, tracing—ensuring issues can be diagnosed quickly.

Quality & Testing
•Develop comprehensive automated tests using frameworks such as JUnit, Mockito, Cucumber.
•Participate in design and code reviews, helping raise engineering standards across the team.
•Advocate for code quality, maintainability, and long-term technical health.
DevOps, Cloud & Tooling
•Use and improve deployment pipelines and operational tooling (Docker, Kubernetes, CI/CD, AWS services).
•Contribute to internal frameworks, shared libraries, and engineering best practices.
•Help shape the evolution of our platform toward a more flexible, modern architecture.
Collaboration & Delivery
•Work in an agile environment, contributing to planning, design discussions, and iterative delivery.
•Collaborate across squads to shape technical solutions that span multiple systems.
•Document best practices, reference architectures, and design approaches others can rely on.

About you
You’re an engineer who thrives in a fast-paced, high-growth environment and enjoys solving complex, system-level problems. You bring:
•Expertise in Java or another OO language with willingness to work in Java.
•Strong understanding of OOP, design patterns, and distributed systems fundamentals.
•Experience building and operating microservices in production.
•Ability to reason about concurrency, performance, and system behaviour under load.
•Clear, proactive communication and a collaborative, team-first mindset.
•Strong analytical and problem-solving skills supported by sound engineering judgement.
•Ability to manage complexity, balance competing priorities, and deliver high-quality work.
•A growth mindset—you enjoy learning, improving, and helping others grow.
•A self-starter attitude with a passion for ownership and continuous improvement.

ModInclusion
At Modulr, we are working hard to build a more positive diverse and inclusive culture that helps everyone to feel they belong and can truly bring their whole self to work. Not only is it the right thing to do for everyone in the Modulr team, it’s also the right thing to do for our business, the community we operate in and attracting future talent. As part of our approach, we actively welcome applications from candidates with diverse backgrounds.

•Are you curious, excited by experimentation, and always looking for a better way of doing things?
•Do you want to keep learning and developing whilst getting hands-on experience working in the payments space?
•Do you want to have the opportunity to apply technology to transform the way we operate at scale.

If so, we would love to hear from you!
We are looking to hire ambitious, and value-adding talent to join Modulr, the fastest growing payments business in the UK and Europe. The Principal Engineer is a hands-on individual contributor role with broad technical influence across multiple teams within our Engineering, CTO team. In this role you will work in a cross-functional team who are asked to solve a problem, rather than be handed a task to do. This is an excellent opportunity to work in a high-growth environment with a fast-paced and collaborative culture where you will have great opportunities to work on challenging problems.

About Us
At Modulr our mission is to move money efficiently to power business productivity. We are building a new digital payments service to make money flow more efficiently through businesses and the economy. This is a new type of payments account that is built for businesses that need faster, easier and more reliable ways to move money.
Our flexible platform and innovative approach allows our customers to utilise our payments account instead of a traditional bank account. Our accounts come with a sort code and account number, access to payment systems (eg Faster Payments and Visa) and everything our customers need from a payments account. They can instantly open as many accounts as they need, automate how they make and receive payments as well as the reconciliation processes these create. All in real time, 24/7 through their own systems utilising our API that integrates into any platform.
Our founding team has a wealth of experience in the payments industry and growing successful businesses. Modulr is backed by payments giants PayPal Ventures and FIS Ventures, as well as startup and scale up specialists Blenheim Chalcot, General Atlantic, Frog and Highland Europe which enables us to leverage their resources and expertise to drive our growth initiatives. These partnerships provide us with the necessary provisions to propel our business to new heights.

Modulr values
•Building the extraordinary and going that extra mile
•Owning the opportunity, be passionate and proud of the time you invest
•Move at pace, reach your goals faster with us supporting you each step of the way
•Achieve it together, working as a team and being a Modulite

The Tech Team
At Modulr we are focused on building autonomous squads that are focused on working in the best possible way. We operate in a tribes and squad model with each area focused on a particular growth area. Each squad is small and cross-functional. We have big ambitions and have many interesting challenges ahead. Our strategy is to provide our customers with seamless connectivity into payment schemes both domestically and overseas no matter where they're based.

About the role
•Lead in Design, analysis and documentation of products, systems or subsystems, setting the technical direction for key parts of the platform.
•Provide hands-on technical leadership on the most complex areas of the platform, pairing with teams and unblocking hard engineering problems and raising the quality bar.
•Take principal ownership of core framework components such as the workflow engine, rules/decision engine and event-driven orchestration layer, defining patterns and abstractions that other teams reuse.
•Design and evolve event-driven architectures that support real-time decisioning, auditability and replay across multiple domains.
•Lead the design and implementation of agentic AI–driven workflows, orchestrating services and AI components to assist human operators while keeping decisions explainable and controlled.
•Define and own domain models, service boundaries and integration contracts, using techniques like domain-driven design and hexagonal architecture to keep systems loosely coupled and vendor-agnostic.
•Drive engineering standards, tooling, and processes to the next level – from code quality and testing through to observability, reliability and security.
•Develop and execute test procedures for software.
•Proactively identify issues, bottlenecks, gaps, or other areas of concerns or opportunities and work to either directly affect change, or advocate for that change.
•Work in an agile environment - Scrum or Kanban.
•Document best practices, guides, systems design, reference architectures and implementations.
•Participate in design and code reviews.
•Contribute to the evolution of our architecture to make it more flexible and easier to use.
•Be an ambassador for technical excellence both within Modulr and externally by representing Modulr in events and conferences.

About You
•Able to clearly communicate architectural goals and standards.
•Ability to deep dive into technical problems and customer led challenges
•Strong analytical thinking, problem-solving, appropriate judgement and decision-making skill
•Commitment to collaboration and teamwork
•Proven ability to effectively manage timelines and deliverables
•You thrives in complex, rapidly changing environments and can make sound judgements amid ambiguity
•You are a self-starter, motivated team player who thrives in a fast-paced environment
•You enjoy shaping architecture as well as code – guiding service boundaries, contracts, writing complex frameworks and event models that other teams build on.
•You have a strong track record of building high-scale, reliable systems, and you are comfortable designing for resilience, observability and graceful degradation from day one.
•You are comfortable in building event-driven and data-driven platforms.
•You are curious/passionate about AI and automation and think carefully about where agents/LLMs add real value while staying within risk and control boundaries.

Technical knowledge required
•Expert in Java with deep experience building and operating distributed microservices in a cloud environment, at scale
•Expert in OOPs and design patterns.
•Expert in REST API design.
•Strong practical knowledge of event-driven architectures.
•Open-Source technologies, such as Spring and Hibernate.
•Strong background in observability and reliability
•Open-source RDBMS technologies such as PostgreSQL
•Experience testing across different levels of applications and advocate for best practice.

Nice to have
o Experience with compliance / risk / FinCrime domains
o Hands-on experience designing or integrating workflow engines.
o Experience with rules / decision engines and a clear view on how to manage rule lifecycle, versioning and testing at scale.
o Experience/understanding of agentic / AI-driven systems and how to integrate them into backend workflows with appropriate guardrails, monitoring and fallbacks.
o Exposure to payment schemes/flows, regulatory frameworks, SME/partner onboarding; experience reducing false positives via rule tuning/enrichment; familiarity with schema governance and data‑lineage tooling is a strong plus.

ModInclusion
We believe that by seeing Modulr, and the world, from all sorts of angles, we can make life better for all. We want you to know that the things that make you, you — like your identity, age, ability, and background — are things that we will always celebrate and support with open arms. As such, we are keen to maximise the diversity of our workforce and actively encourage applications from anyone and everyone.