Backend Engineer – Fintech Platform (Contractor)

nsave; Greater London; On-site; GBP 25,000 - 45,000; Full time

Job summary

nsave is a fintech company building a scalable backend for its global financial services. The Backend Engineer will own critical backend subsystems, from service architecture to security and compliance integrations, serving tens of thousands of users across multiple jurisdictions.

The role requires strong engineering fundamentals, platform breadth, and a security-minded approach, with startup/adtech/fintech experience preferred. Location is Bangladesh (Dhaka preferred) with contractor engagement.

Qualifications

• Strong engineering fundamentals and clean architecture knowledge.
• Broad platform knowledge across backend, databases, and CI/CD.
• Security-minded design for financial systems and compliance.
• Business context-aware decisions balancing speed and quality.

Responsibilities

• Design, implement, and own critical backend infrastructure and services.
• Improve system health by identifying weaknesses and prioritising fixes.
• Collaborate with engineering, product, and operations to ship features across markets.
• Contribute to engineering best practices and code quality as we scale.

Skills

Strong engineering fundamentals

Platform knowledge

Security-minded

Business-minded

Independent worker

Tools

CI/CD

Infrastructure as code

Databases

Job description

nsave is a fintech company building a scalable backend for its global financial services. The Backend Engineer will own critical backend subsystems, from service architecture to security and compliance integrations, serving tens of thousands of users across multiple jurisdictions.

The role requires strong engineering fundamentals, platform breadth, and a security-minded approach, with startup/adtech/fintech experience preferred. Location is Bangladesh (Dhaka preferred) with contractor engagement.