Senior Technical Lead – Fintech, AWS, High-Scale Systems

Arcus Search; Stockholms kommun; On-site; SEK 1,200,000 - 1,800,000; Full time

Job summary

Arcus Search in Stockholm is seeking a Technical Lead / Principal Engineer to drive architectural decisions in high-scale fintech platforms and own the technical direction.

This hands-on leadership role requires deep backend experience, strong system design, and a product mindset, with collaboration across Payments, Banking infrastructure, Risk and Data teams. You will mentor engineers and raise engineering standards while contributing meaningful code.

Qualifications

• Hands-on, senior/lead level required
• Strong backend engineering and AWS expertise
• Experience shaping technical direction and architecture

Responsibilities

• Lead system design for high-scale distributed systems
• Own technical strategy within the team and influence standards
• Mentor senior engineers and shape technical culture
• Drive modernization, performance, and resilience improvements
• Partner with Product, Data and Risk to deliver critical initiatives
• Ensure reliability, observability and maintainability of complex systems

Skills

AWS expertise

System design

Technical leadership

Mentoring

Product mindset

Tools

Java

Python

Node.js

TypeScript

React

Job description

Arcus Search in Stockholm is seeking a Technical Lead / Principal Engineer to drive architectural decisions in high-scale fintech platforms and own the technical direction.

This hands-on leadership role requires deep backend experience, strong system design, and a product mindset, with collaboration across Payments, Banking infrastructure, Risk and Data teams. You will mentor engineers and raise engineering standards while contributing meaningful code.