Senior Software Engineer, Performativ
APIs & Integrations
+ Equity
3 days a week in office (Fitzrovia House, London)
Wealth management software
Job no longer available
Wealth management software
21-100 employees
Job no longer available
+ Equity
3 days a week in office (Fitzrovia House, London)
21-100 employees
Company mission
To build the operating system for tomorrow's wealth management.
Role
Who you are
- 10+ years of backend engineering experience, with a strong focus on API development and integration
- Deep understanding of open web standards including HTTP, JSON, webhooks, and OpenAPI
- Track record of building reliable, low-latency systems at scale handling millions of daily API calls
- Experience with backend languages like Go, TypeScript (Node.js), Python, or PHP in production environments
- Exposure to Infrastructure and Cloud using AWS and tools like AWS CDK or Terraform
- Familiarity with distributed system architecture, asynchronous processing, and data consistency models
- Excellent communication skills and the ability to explain trade-offs to technical and non-technical stakeholders
- Strong security mindset with knowledge of authentication patterns (e.g. OAuth2, JWT)
- Comfort operating in a hybrid work environment with 3 days per week onsite in central London
- Experience mentoring developers and contributing to team-wide technical strategy
What the job involves
- Join us in building open, high-scale APIs that power fintech - millions of secure HTTP transactions daily
- As a Senior Software Engineer at Performativ, you’ll lead the design and implementation of robust, high-throughput APIs and backend systems. Everything we build is grounded in open web standards - HTTP, JSON, webhooks, OpenAPI - and built for scale, reliability, and clear interoperability
- You’ll work on the core systems that power mission-critical financial infrastructure for institutions across Europe
- Design and implement modern, standards-based APIs using REST and OpenAPI specifications
- Build scalable backend systems that handle millions of HTTP/JSON transactions daily with low latency
- Develop and maintain secure, event-driven integrations via webhooks and callback mechanisms
- Lead the backend design of new products and services, ensuring interoperability and long-term maintainability
- Optimize for resilience, observability, and fault-tolerant behavior across distributed cloud systems
- Deploy infrastructure using AWS CDK and build with modern tools like Golang, TypeScript, Python, and PHP
- Ensure clean interface contracts and clear documentation for client developers
- Collaborate across engineering, product, and security to deliver business-critical functionality
- Mentor engineers and help define backend engineering standards across the team
- Continuously improve performance, security, and scalability of the core API platform
Salary benchmarks
Our take
With the rise of digital-first banking, traditional and legacy financial institutions are struggling to keep up with innovations. Performativ is a digital-first platform for wealth managers and investment advisors, focussing on optimising advisory solutions and the customer experience of high net worth individuals (HNWIs).
Performativ offers front, middle and back-end tools to financial service providers - such as investment advisors - suggesting optimisations for their operations while helping to future-proof financial infrastructure. The company claims to achieve 70% reductions in operating costs and a 2x faster onboarding process - boasting undeniable value for its clients.
Managing over €20B in assets spanning various classes, Performativ caters to the diverse needs of financial institutions and wealth managers, and is positioned to be a key player in reshaping the future of financial services. Recent funding will be used to accelerate its growth, expand its offering and increase its client base as it addresses a sector in dire need of digital innovation.
Kirsty
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 3 rounds)
Apr 2026
$14m
SERIES A
Nov 2023
$6.5m
SEED
Total funding: $21.2m
Company HQ
Frederiksstaden, Copenhagen
Leadership
Peter Barry
(Co-Founder & CTO)Previously led Development Operations at Goldman Sachs, was the Founder of cell five and worked as a Cloud Architect and Technical Manager in a consultancy capacity.
Albert Geisler Fox
(Co-Founder & CEO)Previously an Investment Consultant at Kirstein and Financial Analyst at TV2 DANMARK. Also worked as a Software Engineer at Meebox.
Share this job
View 1 more job at Performativ