Senior Software Engineer
Software Engineering
London, UK
Posted on Jul 29, 2026
What We’re All About.
Do you ever have the urge to do things better than the last time? We do. And it’s this urge that drives us every day. Our environment of discovery and innovation means we’re able to create deep and valuable relationships with our clients to create real change for them and their industries. It’s what got us here – and it’s what will make our future. At Quantexa, you’ll experience autonomy and support in equal measures allowing you to form a career that matches your ambitions. 41% of our colleagues come from an ethnic or religious minority background. We speak over 20 languages across our 47 nationalities, creating a sense of belonging for all.
Opportunity
Due to our continued growth and the increasing demand from customers worldwide, we're looking for a Senior Software Engineer to join our R&D team and help shape the next generation of products that transform how organisations use data.
You'll join the Research and Development department, working on our core Contextual Decision Intelligence offering: the Quantexa Platform. Our technology helps customers tackle complex challenges across fraud detection, financial crime, data management and more. We process, analyse and visualise vast amounts of data to uncover hidden relationships and detect anomalous or suspicious activity.
Our backend services are primarily written in Scala and deployed as microservices. We embrace functional programming principles and strongly-typed systems, building scalable, distributed solutions that handle large volumes of data. While Scala is our primary language, we welcome experienced software engineers from other backend backgrounds, particularly Java and other strongly-typed languages, who are interested in learning Scala and working on large-scale distributed systems.
We leverage modern architectural patterns and technologies to build highly performant distributed systems, including event-driven architectures, event sourcing and CQRS, enabling our platform to remain scalable, resilient and flexible as it grows.
What do I need to have?
We have one mission. To help businesses grow. To make data easier. And to make the world a better place. We’re not a start-up. Not anymore. But we’ve not been around that long either. What we are is a collection of bright, passionate minds harnessing complexities and helping our clients and their communities. One culture, made of many. Heading in one direction – the future.
It’s All About You.
We want you to feel welcome, valued, and respected - because it’s your individuality and passion that make you Q. We see that, and we celebrate it. That’s why we’re proud to be an Equal Opportunity Employer.
We are committed to fostering an inclusive and diverse work environment, continuously improving to ensure everyone belongs. Our recruitment process is designed to be inclusive and accessible. If you need any reasonable adjustments or accommodations, please let our Talent Acquisition Team know - we’re happy to assist.
No matter your race, beliefs, color, national origin, gender, sexual orientation, age, marital status, neurodiversity, or abilities—whoever you are—if you're a passionate, curious, and caring human eager to push the boundaries of what’s possible, we want to hear from you.
Do you ever have the urge to do things better than the last time? We do. And it’s this urge that drives us every day. Our environment of discovery and innovation means we’re able to create deep and valuable relationships with our clients to create real change for them and their industries. It’s what got us here – and it’s what will make our future. At Quantexa, you’ll experience autonomy and support in equal measures allowing you to form a career that matches your ambitions. 41% of our colleagues come from an ethnic or religious minority background. We speak over 20 languages across our 47 nationalities, creating a sense of belonging for all.
Opportunity
Due to our continued growth and the increasing demand from customers worldwide, we're looking for a Senior Software Engineer to join our R&D team and help shape the next generation of products that transform how organisations use data.
You'll join the Research and Development department, working on our core Contextual Decision Intelligence offering: the Quantexa Platform. Our technology helps customers tackle complex challenges across fraud detection, financial crime, data management and more. We process, analyse and visualise vast amounts of data to uncover hidden relationships and detect anomalous or suspicious activity.
Our backend services are primarily written in Scala and deployed as microservices. We embrace functional programming principles and strongly-typed systems, building scalable, distributed solutions that handle large volumes of data. While Scala is our primary language, we welcome experienced software engineers from other backend backgrounds, particularly Java and other strongly-typed languages, who are interested in learning Scala and working on large-scale distributed systems.
We leverage modern architectural patterns and technologies to build highly performant distributed systems, including event-driven architectures, event sourcing and CQRS, enabling our platform to remain scalable, resilient and flexible as it grows.
What do I need to have?
- A passion for designing, building and delivering high-quality, well-engineered software solutions to complex technical problems.
- The ability to take a big-picture approach, ensuring solutions work effectively within a wider system architecture.
- Strong commercial experience developing scalable backend applications in JVM languages, such as Scala, Java or similar.
- An interest in functional programming concepts and a willingness to learn and work with Scala if you have not used it extensively before.
- Strong problem-solving skills and a collaborative approach to software development.
- Experience with Big Data technologies such as Spark, Hadoop, Elasticsearch or similar platforms.
- Building distributed, scalable backend systems and microservice-based architectures.
- Experience with functional programming concepts and frameworks.
- Building production data processing pipelines, including ETL, streaming or analytics workloads.
- Working with event-driven architectures, event sourcing or CQRS patterns.
- Data transformation, cleansing, parsing and standardisation, with a focus on improving data quality and integrity.
- Experience with cloud platforms and modern DevOps tooling.
We have one mission. To help businesses grow. To make data easier. And to make the world a better place. We’re not a start-up. Not anymore. But we’ve not been around that long either. What we are is a collection of bright, passionate minds harnessing complexities and helping our clients and their communities. One culture, made of many. Heading in one direction – the future.
It’s All About You.
We want you to feel welcome, valued, and respected - because it’s your individuality and passion that make you Q. We see that, and we celebrate it. That’s why we’re proud to be an Equal Opportunity Employer.
We are committed to fostering an inclusive and diverse work environment, continuously improving to ensure everyone belongs. Our recruitment process is designed to be inclusive and accessible. If you need any reasonable adjustments or accommodations, please let our Talent Acquisition Team know - we’re happy to assist.
No matter your race, beliefs, color, national origin, gender, sexual orientation, age, marital status, neurodiversity, or abilities—whoever you are—if you're a passionate, curious, and caring human eager to push the boundaries of what’s possible, we want to hear from you.