Senior Backend Developer - Fintech SaaS - Python, Django Rest, AWS - Remote

Sourcific Talent; London; Remote; GBP 60,000 - 80,000; Full time

Job summary

A rapidly growing Fintech SaaS company is seeking a Senior Backend Developer to build and scale core backend services. You will collaborate closely with product and engineering teams, focusing on creating scalable solutions with Django Rest Framework and PostgreSQL. This role offers remote flexibility within Europe and a competitive salary ranging from £60,000 to £80,000 per annum.

Benefits

Competitive salary

Full remote flexibility

Permanent contracts for UK hires

Qualifications

• 5+ years of backend engineering experience.
• Strong expertise in Django Rest Framework and AWS Lambda.
• Experience with fintech or finance-related SaaS products is a plus.

Responsibilities

• Design and implement scalable backend solutions.
• Collaborate with product managers and engineering teams.
• Optimise performance and reliability in microservices architecture.

Skills

Django Rest Framework

PostgreSQL

AWS Lambda

Pytest

Tools

Git

Docker

Job description

Job Title - Senior Backend Developer

Location - Remote Anywhere in Europe (Contract outside the UK / Permanent in the UK)

Salary - £60,000 - £80,000 per annum

Company Overview

Our client is a rapidly growing Fintech SaaS company delivering intelligent automation and data-driven tools for enterprise finance teams. They focus on revolutionising workflows across Accounts Receivable, Accounts Payable, Reconciliation, and Treasury, transforming how global finance departments operate faster, smarter, and more efficiently.

Role Summary

As a Senior Backend Developer, you'll be a key contributor in designing, building, and scaling core backend services. You'll work closely with Product, Engineering, and DevOps teams to deliver mission-critical features for global enterprise customers. This role is ideal for a technically curious and independent engineer who thrives in a fast-paced, agile startup environment.

Key Responsibilities

• Design and implement scalable backend solutions using Django Rest Framework and PostgreSQL
• Collaborate with product managers and other engineers to deliver high-impact features
• Optimize code performance and reliability across microservices architecture using AWS Lambda
• Maintain strong testing coverage using Pytest and support CI/CD processes
• Mentor junior engineers and contribute to engineering best practices
• Participate in code reviews, architecture discussions, and technical planning

Ideal Candidate Profile

Experience & Expertise

• 5+ years of backend engineering experience
• Strong expertise in Django Rest Framework, PostgreSQL, and AWS Lambda
• Experience with Pandas and OAuthlib, or similar supporting libraries
• Prior exposure to fintech, accounting automation, or finance-related SaaS products is a plus

Skills & Attributes

• Strong testing mindset with experience using Pytest
• Comfortable in a fast-paced, collaborative remote environment
• Independent, proactive, and detail-oriented problem solver
• Excellent communication and stakeholder collaboration skills

What You'll Get

• Competitive salary between £60,000 - £80,000
• Full remote flexibility from anywhere in Europe
• UK-based hires receive permanent contracts; EU-based hires are contractors but treated as full-time staff with paid leave
• Opportunity to grow into a technical leadership role as the team scales