Senior Polyglot Engineer (JS/Python/Go) — Remote

YLD; Greater London; On-site; GBP 80,000 - 120,000; Full time

Benefits offered by this job

Private Health Care

Maternity/Paternity Leave

Annual holiday 25 days

Training/Conferences allowance

Hardware allowance

Mental Health support

Headspace/Calm access

Bonus potential

Company laptop

Referral schemes

Job summary

YLD in the United Kingdom is seeking a Senior Software Engineer to join a remote-first consultancy focused on software engineering, product design, and data. You will help build innovative products for clients, designing scalable, fault-tolerant architectures and delivering features in a fast-paced environment.

As part of a collaborative engineering team, you will mentor colleagues, contribute to production operations, and advance best practices to ensure high availability and quality across

Qualifications

• Experience with modern frameworks across the stack (FastAPI, Gin, Express, etc.).
• Production experience with React, modern build tools, state management, responsive design, and accessibility standards.
• Comprehensive testing experience (unit, integration, E2E, security) and performance optimization.
• Scalable system design patterns, load balancing, and high-availability architectures.
• Database design and optimization (relational and NoSQL).
• API development (REST, GraphQL, gRPC) and event-driven architectures.
• Caching strategies and message queue systems (Redis, Kafka, RabbitMQ).
• Cloud platforms (AWS, Azure, GCP) with containerisation (Docker, Kubernetes).
• CI/CD pipelines and Infrastructure as Code (Terraform, CloudFormation).
• Monitoring, observability, and performance optimisation tools.

Responsibilities

• Crafting excellent products by building new features meeting client needs.
• Delivering changes to products as clients move to CI/CD model.
• Collaborating with team on engineering initiatives to improve performance.
• Mentoring the engineering team to accelerate career growth.
• Architecting, designing, building, and delivering highly available, zero-downtime products.
• Owning production operation and monitoring of products per SLAs.
• Promoting best practices within the team and department.
• Showcasing work through regular demonstrations to the department and wider company.

Skills

JavaScript/TypeScript

Python

Go

Modern frameworks

React

Testing

Performance optimization

System design

Relational DB

NoSQL

REST/GraphQL

Caching

Messaging systems

Cloud platforms

Docker/Kubernetes

CI/CD

Terraform/CloudFormation

Monitoring/Observability

Debugging production issues

AI tools in engineering

Tools

FastAPI

Gin

Express

React

CI/CD tools

Terraform

CloudFormation

Docker

Kubernetes

Redis

Kafka

RabbitMQ

Job description

YLD in the United Kingdom is seeking a Senior Software Engineer to join a remote-first consultancy focused on software engineering, product design, and data. You will help build innovative products for clients, designing scalable, fault-tolerant architectures and delivering features in a fast-paced environment.

As part of a collaborative engineering team, you will mentor colleagues, contribute to production operations, and advance best practices to ensure high availability and quality across