Senior Backend Developer (Ruby on Rails, Elasticsearch) - Remote Europe

SALT European Union
Remote
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AI Summary

Seeking a Senior Backend Developer with strong Ruby on Rails and Elasticsearch expertise for a rapidly scaling European SaaS business. This role focuses on designing, developing, and optimizing scalable backend systems, APIs, and search capabilities. Key requirements include commercial experience with Ruby on Rails, Elasticsearch, REST APIs, and relational databases.

Key Highlights
Key engineering hire for a high-growth European SaaS business.
Focus on building scalable backend systems, improving platform performance, and enhancing search capabilities.
Requires strong commercial experience with Ruby on Rails and deep hands-on experience with Elasticsearch.
Key Responsibilities
Designing and building scalable backend services using Ruby on Rails
Developing and maintaining RESTful APIs
Optimising search functionality and query performance with Elasticsearch
Improving backend scalability, reliability, and system performance
Working closely with Product, Frontend, and DevOps teams
Contributing to architecture decisions, testing standards, and CI/CD processes
Technical Skills Required
Ruby on Rails Elasticsearch REST APIs MySQL
Benefits & Perks
Fully remote anywhere in Europe
Competitive salary not tied to location
High-growth product environment with strong technical ownership
Collaborative engineering culture
Career development and continuous learning support
International meetups and team events
Nice to Have
GCP or cloud-native environments
CI/CD and DevOps exposure
Distributed systems and performance optimisation
Background job processing frameworks

Job Description


Senior Backend Developer (Ruby on Rails & Elasticsearch) | Remote Europe


We’re partnering with an innovative European SaaS business that’s scaling rapidly across international markets and looking to hire a Senior Backend Developer with strong Ruby on Rails and Elasticsearch expertise.


This is a key engineering hire within a high-performing product team focused on building scalable backend systems, improving platform performance, and enhancing search capabilities across large datasets.


The Role


You’ll be responsible for designing, developing, and optimising backend services in a modern cloud-based SaaS environment. This role is heavily focused on backend architecture, API development, and search performance optimisation.


Ruby on Rails and Elasticsearch are both critical for this position.


What You’ll Be Doing


  • Designing and building scalable backend services using Ruby on Rails
  • Developing and maintaining RESTful APIs
  • Optimising search functionality and query performance with Elasticsearch
  • Improving backend scalability, reliability, and system performance
  • Working closely with Product, Frontend, and DevOps teams
  • Contributing to architecture decisions, testing standards, and CI/CD processes


Key Requirements


  • Strong commercial experience with Ruby on Rails
  • Proven experience building scalable backend applications
  • Deep hands-on experience with Elasticsearch and search optimisation
  • Strong understanding of REST APIs and backend architecture
  • Experience with relational databases such as MySQL
  • Background working within SaaS or product-led environments


Nice to Have


  • Experience with GCP or cloud-native environments
  • CI/CD and DevOps exposure
  • Experience with distributed systems and performance optimisation
  • Familiarity with background job processing frameworks


What’s On Offer


  • Fully remote anywhere in Europe
  • Competitive salary not tied to location
  • High-growth product environment with strong technical ownership
  • Collaborative engineering culture
  • Career development and continuous learning support
  • International meetups and team events


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