Senior Software Engineer (Java/Kotlin)

What you will be doing: 

At ComplyAdvantage, we’re building cutting-edge technology to stop money from ending up in the hands of criminals. Our mission is to reveal the truth for a safer world, and our platform helps thousands of organizations detect and prevent financial crime in real time.
We’re looking for Senior Software Engineers who want to work on high-scale, distributed systems and solve complex data and architecture challenges - all in service of a mission that matters.

As a Senior software Engineer, you’ll play a critical role in designing, building, and scaling our cloud-native services. You’ll work closely with cross-functional teams, including ML engineers, data scientists, to power key features of our platform:

• Build and maintain backend services that process and enrich massive volumes of data - extracting signals from media sources, applying machine learning models, and merging insights with structured datasets.
• Join a cross-functional squad and help drive backend architecture decisions as we continue to evolve and scale our systems.
• Design APIs and backend services that are robust, secure, and performant under load.
• Implement event-driven workflows using Kafka, and manage distributed processing pipelines.
• Ensure code quality through tests, code reviews, observability best practices, and DevOps ownership.
• Take technical ownership and contribute to mentoring less experienced engineers in the team.

Our Tech Stack:

• Cloud-Based Infrastructure: Fully cloud-based with a Kubernetes-focused tech stack. Compute workloads run in Kubernetes clusters across multiple regions.
• Development is organised around Kotlin and Python for our backend languages and TypeScript/ES6+React for our frontend stack
• We make substantial use of relational database technologies, notably Postgres, Yugabyte
• We use an event-sourced model powered by Kafka for our communication bus and gRPC for our intra-service communication protocol
• We use modern observability solutions from Grafana Cloud, we build with GitLab tooling and deploy our code using ArgoCD

About you:

We're looking for experienced backend engineers who:

• Have 5+ years of experience building backend systems in Kotlin or Java
  
• Understand modern backend architecture: microservices, APIs, event sourcing
• Have hands-on experience with distributed systems or large-scale data processing
• Have deployed and maintained production systems on cloud platforms (AWS or GCP)
• Know how to write clean, testable, well-documented code — and care about doing it right
• Are comfortable with CI/CD, containerisation, and observability tools
• Can mentor teammates, lead by example, and thrive in collaborative environments

Nice to haves

• Experience working in cross-disciplinary teams with ML engineers or SREs
• Familiarity with infrastructure-as-code, security best practices, or SRE practices
• Exposure to agile development, pair programming, and continuous delivery

Education:

• BSc/BA degree in computer science, engineering or related discipline OR relevant years of experience in required skills.

What’s in it for you? 

• Equity as we want you to have a part of what we are building 
• Private medical insurance designed to keep you ensuring peace of mind while you excel in your career.
• Unlimited Time Off Policy- A work-life balance and focus on our well-being are critical to keeping us performing at our best 
• We embrace a hybrid approach that requires employees to be in the office for two days a week. We strongly believe that this approach fosters collaboration and enables the building of meaningful relationships
• You will also get a new starter budget to kit out your home office 
• Opportunity to work on innovative projects with smart-minded people keen to share their knowledge and continuously improve 
• Annual learning budget (prorated based on start date) to drive your performance and career development. 

About ComplyAdvantage: We're a leading SaaS provider revolutionising how fintech companies navigate complex regulatory landscapes. Our platform powers compliance and risk management for hundreds of innovative financial services companies, from emerging startups to established enterprises. We believe in empowering our teams to solve meaningful problems and create exceptional value for our customers.

We have five global hubs in New York, London, Lisbon, Singapore and Cluj-Napoca. 

Since 2014, we have raised over $100 million in funding and are backed by Goldman Sachs, Ontario Teachers, Index Ventures, Balderton Capital and a16z.

At ComplyAdvantage diversity fuels our growth and our commitment to inclusion across race, gender, age, religion, identity and experience drives us forward every day. We encourage everyone to apply and will consider every application fairly.

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