SeniorStaff Fullstack Software Engineer

Senior/Staff Fullstack Software Engineer

Location: Fitzrovia London (Hybrid 4 days in office 1 day remote)

We are:

Wizeline a global AI-native technology solutions provider develops cutting-edge AI-powered digital products and platforms. We partner with clients to leverage data and AI accelerating market entry and driving business transformation. As a global community of innovators we foster a culture of growth collaboration and impact.

With the right people and the right ideas theres no limit to what we can achieve.

Are you a fit

Sounds awesome right Now lets make sure youre a good fit for the role:

We are looking for aSenior or Staff Fullstack Software Engineerto work with one of our most important clients in London. In this role you will build scalable high-performance services that power the companys next-generation financial platform. This includes applications for deal execution invoicing payment distribution and financial reporting. Youll play a critical role in architecting backend systems integrating with external platforms and delivering features that support complex revenue and transaction workflows across the business.

This position follows ahybrid work model based in Fitzrovia (London) withfour (4) days per week in the office andone (1) day working from home.

Key Responsibilities

• Design and implement services that support revenue workflows payment logic and invoicing pipelines
• Build robust APIs and full-stack features leveraging type-safe ORM tooling for schema management and query composition
• Own integration with internal systems (e.g. Salesforce NetSuite) and external providers (e.g. banks payment processors)
• Implement structured financial logic such as contingent payments commission calculations and milestone-based billing
• Integrate AI/LLM capabilities using Claude (Anthropic) and leverage Cursor as a core development tool to accelerate delivery
• Build and deploy infrastructure in AWS
• Translate complex business rules into deterministic backend logic: commissions milestones payee splits and contingent payments.
• Implement robust data flows between Client Processing Deal Management and Authoritative Data domains.
• Work closely with product managers architects and finance stakeholders to deliver end-to-end features

Must-have Skills

• 7 years software engineering experience with a focus on backend/full-stack development
• Experience with a TypeScript-native ORM in production (Drizzle or Prisma strongly preferred); comfort owning schema migrations relations and query optimization
• Deep experience with GraphQL and PostgreSQL in production environments
• Hands-on expertise with AWS services: EC2 Lambda RDS S3 IAM
• Familiarity with event-driven systems (Kafka SQS or similar) API integrations and microservice patterns
• Strong understanding of data modeling transaction workflows and secure service architecture
• Comfortable working across systems where compliance auditability and financial accuracy are critical

Nice-to-have

• Experience with financial systems (payments trust accounting GL integration revenue recognition)
• Familiarity with Salesforce NetSuite Concur or related business platforms
• Experience with serverless architecture and FaaS patterns
• Understanding of multi-party payments invoicing workflows or tax handling (e.g. 1099s VAT)
• Familiarity with Anthropics Claude API and AI-assisted development tools like Cursor; experience integrating LLM capabilities or shipping AI-powered features
• AI Tooling Proficiency:Ability to leverage one or more AI tools to optimize and augment day-to-day work including drafting analysis research or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.

What we offer

• A High-Impact Environment
• Commitment to Professional Development
• Flexible and Collaborative Culture
• Global Opportunities
• Vibrant Community
• Total Rewards

Specific benefits are determined by the employment type and location.

Find out more about our culture here.