Ruby on Rails Contract Jobs in London
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19 Contract jobs sorted by:
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19 Contract jobs
Senior Java Developer - SC Active/Eligible - £450pd Inside IR35 - Once a month o...
Posted 4 days ago by Boost Talent
The role of Senior Java Developer involves joining a high-profile government programme on an initial 3-month contract, r...
- Rate £450 per day
- Category Inside
- Work type Hybrid
- Location Sheffield, Leeds or London , UK
SC Cleared - SQL Database Administrator - Hybrid - SQL Server, Always On, SSIS/S...
Posted 4 days ago by TrinIT Talent Ltd
TrinIT Talent is seeking an experienced SQL Database Administrator with current SC clearance for a 6-month contract in L...
- Rate £400 per day
- Category Inside
- Work type Hybrid
- Location London, UK
Hands on Programme Manager - Loan Book Migration - RFI - London
Posted 5 days ago by Sanderson Recruitment
The role of Hands on Programme Manager for Loan Book Migration involves leading a high-impact transformation initiative...
- Rate £900 per day
- Category Inside
- Work type Hybrid
- Location London; City of London; East London; Central London; South East London; West London; Canary Wharf; South West London; North London; Greenwich; Stratford
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Clerical Officer - Theatre & Inpatient Scheduling Team * INTERNAL ONLY *
Posted 7 days ago by The Shrewsbury and Telford Hospital NHS...
This role is for internal candidates at The Shrewsbury and Telford Hospital NHS Trust, focusing on delivering high-quali...
- Rate Negotiable
- Category Undetermined
- Work type Undetermined
- Location Greater London, England, United Kingdom
Full Stack Developer - Ruby on Rails, REST API, TDD, Postgres, React & Next.JS
Posted 1 week ago by Gravitas Recruitment Group (Global) Ltd
The role of Full Stack Developer focuses on backend development using Ruby on Rails, with a secondary emphasis on fronte...
- Rate £63 per hour
- Category Undetermined
- Work type Hybrid
- Location London Area, United Kingdom
Full Stack Developer - Ruby On Rails, REST API, TDD, React/Next
Posted 1 week ago by Gravitas Recruitment Group Ltd
The role of Contract Full Stack Developer focuses primarily on Back End development using Ruby on Rails, with a secondar...
- Rate £500 per day
- Category Outside
- Work type Undetermined
- Location London, UK
Delivery Manager (Online Products)
Posted 1 week ago by UNICEF UK
The Delivery Manager (Online Platforms) at UNICEF UK will oversee the effective delivery of online products for a 6-mont...
- Rate £45,000 per year
- Category Undetermined
- Work type Undetermined
- Location Greater London, England, United Kingdom
Senior Alliance & Program Manager – Oncology
Posted 2 weeks ago by Allegis Global Solutions
The Senior Alliance & Program Manager for Oncology at GSK will lead cross-functional teams to drive the successful deliv...
- Rate Negotiable
- Category Undetermined
- Work type Undetermined
- Location London, England, United Kingdom
Desktop Support Engineer | Energy trading | £300 - £400 Inside IR35 | Onsite | 6...
Posted 2 weeks ago by VirtueTech Recruitment Group
The Desktop Support Engineer role is focused on providing first-line technical support within a cross-asset commodities...
- Rate £400 per day
- Category Inside
- Work type Onsite
- Location London Area, United Kingdom
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About Our Ruby on Rails Contract Roles in London
What does a ruby on rails contractor do?
Ruby on Rails contractors are engaged to build, maintain, and extend web applications using the Rails framework, which combines the Ruby programming language with a convention-over-configuration approach to web development that has enabled rapid application development for startups, SaaS businesses, and digital product companies for two decades. While Rails is no longer the dominant new-project framework it was in the mid-2000s, the large installed base of production Rails applications across the UK technology sector, particularly in e-commerce, marketplace platforms, SaaS products, and media, creates consistent and ongoing demand for experienced Rails contractors to maintain, improve, and extend existing applications.
Rails contractors are expected to have strong Ruby language proficiency alongside deep, practical Rails framework knowledge. Expert understanding of Active Record for database interaction, Action Controller and Action View for request handling and templating, the Rails routing DSL, and the asset pipeline or modern alternatives such as Propshaft and Importmap is expected at senior level. Experience with background job processing using Sidekiq, Action Mailer, and Active Job, and familiarity with Rails-specific testing tools including RSpec and FactoryBot, is widely assumed. Database expertise, predominantly PostgreSQL, and experience with caching strategies using Redis are broadly expected for production Rails applications. For applications modernising their front-end layer, experience with Hotwire, Turbo, and Stimulus for adding interactivity without a separate JavaScript framework is increasingly valued. Knowledge of deployment on Heroku, AWS Elastic Beanstalk, or containerised environments using Docker is expected at senior level.
What is the market like for ruby on rails contractors?
Ruby on Rails contracting occupies a distinct market position: the volume of new Rails projects is limited compared to the peak years, but the large installed base of production Rails applications creates a steady and loyal demand for experienced Rails contractors who can work on existing codebases confidently. Startups and scale-ups that were built on Rails in the 2010s represent the most consistent source of contract demand, alongside e-commerce, marketplace, and SaaS businesses that have significant Rails applications requiring ongoing development. Rates for experienced Rails contractors are competitive with other senior back-end developer disciplines, and the relative scarcity of strong Rails specialists compared to the demand from the installed base maintains solid rate levels in this market.
What is the contracting market like in London?
London dominates the UK contractor market by volume, depth, and rate levels. The capital concentrates the headquarters and major offices of most FTSE 100 companies, the largest global banks, the Big Four professional services firms, and the central government departments that collectively generate the majority of UK contract demand. Every contracting discipline covered on this site has active demand in London, from niche specialisms like threat intelligence and LLM engineering through to high-volume disciplines like project management and business analysis. The sheer density of employers means contractors in London typically have more choice of engagement at any given time than anywhere else in the UK. Day rates carry a premium of 15 to 25 per cent over the national average across most disciplines, reflecting both the concentration of complex, high-value programmes and the cost of operating in the capital.
How much do ruby on rails contractors usually earn in London?
Contract rates for ruby on rails roles in London typically range from £550 to £935 per day, depending on the scope of the role, required expertise, and the delivery expectations of the engagement.
How many ruby on rails vacancies in London are there on Quality Contracts?
Over the past twelve months, we have tracked over 100 ruby on rails contract roles across the site, with London accounting for roughly one in three of those. Data reviewed up to June 2026.