Senior Backend Engineer - Integrations
Salary:
£100,000 - £120,000 - Per Annum
Locations:
London, london, United Kingdom
Type:
Permanent
Published:
January 23, 2026
Contact:
Cengiz Jaffer
Ref:
19790
Required Skills:
AWS,typescript,node.js
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Job title: Senior Backend Engineer – Node.js/TypeScript
Job type: Permanent
Salary: Competitive (EUR) + Quarterly Bonus
Role Location: Remote across Europe
The Company: A high-growth, global technology provider building mission-critical platforms that process billions of financial transactions every day.

Role and Responsibilities
We’re looking for a Senior Backend Engineer to join a high-performing Integrations team within a modern, microservices-driven platform. This is a role where milliseconds matter, and engineering excellence directly impacts performance, reliability, and business outcomes.
You’ll work on large-scale, distributed systems that power real-time integrations and financial transactions across global markets, helping to drive availability, scalability, and efficiency at enterprise scale.

What You’ll Be Doing
High-Performance Backend Development
  • Design, build, and maintain scalable backend services using Node.js and TypeScript.
  • Develop low-latency, high-availability systems for transaction processing.
  • Optimise services for performance, reliability, and resource efficiency.
Distributed Systems & Integrations
  • Build and maintain integrations with internal and external platforms.
  • Work with messaging systems such as Kafka and RabbitMQ.
  • Develop resilient, event-driven architectures.
Quality & Reliability
  • Write comprehensive unit and end-to-end tests.
  • Participate in code and architectural reviews.
  • Support live systems through on-call rotations.
Cloud & Infrastructure
  • Deploy and operate services in cloud environments (AWS/GCP).
  • Work with containerisation and orchestration tools such as Kubernetes.
  • Monitor system performance and proactively resolve issues.

Tech Stack & Tools
  • Node.js, TypeScript
  • Kafka, RabbitMQ
  • MySQL, PostgreSQL, ClickHouse, MongoDB, DynamoDB
  • AWS / GCP
  • Docker, Kubernetes
  • CI/CD, Monitoring & Observability Tools

What We’re Looking For
Essential
  • 5+ years’ experience in backend development with Node.js and TypeScript
  • Strong understanding of asynchronous programming
  • Experience building distributed systems
  • Strong database knowledge (SQL and NoSQL)
  • Proven experience delivering production-ready solutions
  • Degree in Computer Science or related field (or equivalent experience)
Desirable
  • Experience with enterprise and microservices architectures
  • Cloud-native development experience
  • Performance monitoring and optimisation skills
  • Knowledge of application security best practices
  • Experience in regulated or high-transaction environments

Impact
As a Senior Backend Engineer, your work will directly power high-volume, real-time transaction systems used by millions worldwide. You’ll help shape a platform where reliability, speed, and scalability are critical — and where strong engineering makes a measurable difference.
Apply to be considered!

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Our Commitment to Diversity, Equity, and Inclusion:

Signify’s mission is to empower every person, regardless of their background or circumstances, with an equitable chance to achieve the careers they deserve. Building a diverse future, one placement at a time? Check out our DE&I page here

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