Open Source Contract Job Trends in London

Open Source
England > London

The table below provides summary statistics and contractor rates for jobs advertised in London requiring Open Source skills. It covers contract job vacancies from the 6 months leading up to 14 December 2025, with comparisons to the same periods in the previous two years.

6 months to
14 Dec 2025
Same period 2024 Same period 2023
Rank 237 260 242
Rank change year-on-year +23 -18 0
Contract jobs citing Open Source 145 123 164
As % of all contract jobs in London 1.02% 0.81% 0.86%
As % of the Processes & Methodologies category 1.11% 0.90% 0.96%
Number of daily rates quoted 63 79 97
10th Percentile £308 £325 £363
25th Percentile £450 £463 £463
Median daily rate (50th Percentile) £600 £613 £580
Median % change year-on-year -2.04% +5.60% -7.20%
75th Percentile £688 £800 £728
90th Percentile £838 £838 £800
England median daily rate £525 £575 £575
% change year-on-year -8.70% - -
Number of hourly rates quoted 2 2 11
10th Percentile £52.70 £32.90 -
25th Percentile £54.13 £43.25 £19.99
Median hourly rate £59.50 £60.50 £21.25
Median % change year-on-year -1.65% +184.71% -67.31%
75th Percentile £63.13 £77.75 £22.52
90th Percentile £63.50 £88.10 -
England median hourly rate £36.00 £26.50 £21.25
% change year-on-year +35.85% +24.71% -59.72%

All Process and Methodology Skills
London

Open Source falls under the Processes and Methodologies category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring process or methodology skills in London.

Contract vacancies with a requirement for process or methodology skills 13,051 13,742 17,096
As % of all contract IT jobs advertised in London 91.50% 89.96% 89.50%
Number of daily rates quoted 8,604 8,839 12,265
10th Percentile £341 £350 £350
25th Percentile £425 £450 £456
Median daily rate (50th Percentile) £530 £550 £565
Median % change year-on-year -3.64% -2.65% -4.24%
75th Percentile £650 £675 £688
90th Percentile £764 £800 £792
England median daily rate £506 £525 £545
% change year-on-year -3.62% -3.67% -0.91%
Number of hourly rates quoted 238 165 233
10th Percentile £17.98 £17.70 £18.51
25th Percentile £24.50 £23.80 £21.25
Median hourly rate £29.50 £36.80 £34.00
Median % change year-on-year -19.84% +8.24% -13.38%
75th Percentile £47.94 £53.75 £60.00
90th Percentile £66.80 £80.75 £74.75
England median hourly rate £25.15 £35.00 £44.25
% change year-on-year -28.14% -20.90% +18.63%

Open Source
Job Vacancy Trend in London

Historical trend showing the proportion of contract IT job postings citing Open Source relative to all contract IT jobs advertised in London.

Open Source job vacancy trend in London

Open Source
Daily Rate Trend in London

Contractor daily rate distribution trend for jobs in London citing Open Source.

Contractor daily rate distribution trend for jobs in London citing Open Source

Open Source
Daily Rate Histogram in London

Daily rate distribution for jobs citing Open Source in London over the 6 months to 14 December 2025.

Daily rate histogram for Open Source in London

Open Source
Hourly Rate Trend in London

Contractor hourly rate distribution trend for jobs in London citing Open Source.

Contractor hourly rate distribution trend for jobs in London citing Open Source

Open Source
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Open Source within the London region over the 6 months to 14 December 2025. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Jobs
Central London -6 7 £463 -26.00% 16
South London -4 1 £450 +18.42% 8
East London - 1 £625 - 10
Open Source
England

Open Source
Co-Occurring Skills & Capabilities in London by Category

The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category:

Application Platforms
1 10 (6.90%) Apache Spark
2 4 (2.76%) Apache
3 3 (2.07%) Ethereum
3 3 (2.07%) Hyperledger
4 2 (1.38%) Apache Airflow
4 2 (1.38%) Appian
4 2 (1.38%) JBoss
4 2 (1.38%) Tomcat
5 1 (0.69%) Adobe Experience Manager
5 1 (0.69%) CMS
5 1 (0.69%) Drupal
5 1 (0.69%) Mattermost
5 1 (0.69%) OpenStack
Applications
1 1 (0.69%) Microsoft Office
Cloud Services
1 78 (53.79%) AWS
2 19 (13.10%) Azure
3 14 (9.66%) CloudFront
4 10 (6.90%) GitHub
5 8 (5.52%) GCP
6 7 (4.83%) Amazon S3
7 6 (4.14%) GitHub Actions
8 5 (3.45%) Amazon Bedrock
8 5 (3.45%) Vertex AI
9 4 (2.76%) Anthropic Claude
9 4 (2.76%) Serverless
10 3 (2.07%) Amazon SageMaker
10 3 (2.07%) Azure Machine Learning
10 3 (2.07%) dbt
10 3 (2.07%) GitHub Copilot
10 3 (2.07%) OpenShift
10 3 (2.07%) Snowflake
11 2 (1.38%) Azure AI
11 2 (1.38%) Azure AKS
11 2 (1.38%) Azure Synapse Analytics
Communications & Networking
1 3 (2.07%) Firewall
1 3 (2.07%) SSH
2 2 (1.38%) DHCP
2 2 (1.38%) TCP/IP
2 2 (1.38%) VLAN
3 1 (0.69%) HTTP
3 1 (0.69%) InfiniBand
3 1 (0.69%) Internet
3 1 (0.69%) iSCSI
3 1 (0.69%) Kerberos
3 1 (0.69%) LAN
3 1 (0.69%) Radio Access Network
3 1 (0.69%) SMTP
3 1 (0.69%) Spanning Tree
3 1 (0.69%) STUN
3 1 (0.69%) WAN
Database & Business Intelligence
1 26 (17.93%) Apache Cassandra
2 19 (13.10%) Relational Database
3 15 (10.34%) MongoDB
4 13 (8.97%) DB2
5 11 (7.59%) PostgreSQL
6 7 (4.83%) RDBMS
7 6 (4.14%) Pinecone
8 5 (3.45%) NoSQL
9 4 (2.76%) Apache Hive
9 4 (2.76%) Hadoop
9 4 (2.76%) Impala
9 4 (2.76%) Weaviate
10 3 (2.07%) BigQuery
10 3 (2.07%) Redis
11 2 (1.38%) Big Data
11 2 (1.38%) Data Hub
11 2 (1.38%) Elasticsearch
11 2 (1.38%) HBase
11 2 (1.38%) Metadata
11 2 (1.38%) SQL Server
Development Applications
1 14 (9.66%) JUnit
2 10 (6.90%) Git
3 9 (6.21%) Jenkins
4 7 (4.83%) MLflow
5 5 (3.45%) Cucumber
5 5 (3.45%) SonarQube
6 4 (2.76%) GitLab
6 4 (2.76%) JIRA
7 3 (2.07%) Hardhat
7 3 (2.07%) Hudson
7 3 (2.07%) Subversion
8 2 (1.38%) Gradle
8 2 (1.38%) Robot Framework
8 2 (1.38%) Selenium
8 2 (1.38%) TeamCity
9 1 (0.69%) Bitbucket
9 1 (0.69%) CircleCI
9 1 (0.69%) Gatling
9 1 (0.69%) Maven
General
1 37 (25.52%) Finance
2 31 (21.38%) Social Skills
3 27 (18.62%) Banking
4 19 (13.10%) Analytical Skills
4 19 (13.10%) Investment Banking
5 12 (8.28%) Front Office
6 10 (6.90%) Public Sector
7 6 (4.14%) Financial Institution
8 5 (3.45%) Telecoms
9 4 (2.76%) Documentation Skills
10 2 (1.38%) Electronics
10 2 (1.38%) Manufacturing
10 2 (1.38%) Marketing
10 2 (1.38%) Presentation Skills
11 1 (0.69%) Inclusion and Diversity
11 1 (0.69%) Organisational Skills
11 1 (0.69%) Publishing
11 1 (0.69%) Retail
Job Titles
1 65 (44.83%) Developer
2 46 (31.72%) Senior
3 33 (22.76%) Senior Developer
4 24 (16.55%) Platform Engineer
5 12 (8.28%) Investment Banking Java Developer
5 12 (8.28%) Java Developer
5 12 (8.28%) Linux Developer
5 12 (8.28%) Senior Investment Banking Java Developer
5 12 (8.28%) Senior Java Developer
5 12 (8.28%) Senior SQL Developer
5 12 (8.28%) SQL Developer
6 11 (7.59%) Artificial Intelligence Engineer
7 10 (6.90%) Senior Platform Engineer
8 9 (6.21%) Architect
9 8 (5.52%) Software Developer
10 7 (4.83%) Machine Learning Engineer
11 6 (4.14%) Python Developer
12 5 (3.45%) Solutions Architect
13 4 (2.76%) DevOps Engineer
14 3 (2.07%) F# Developer
Libraries, Frameworks & Software Standards
1 64 (44.14%) Kafka
2 47 (32.41%) gRPC
3 13 (8.97%) React
4 12 (8.28%) JMS
4 12 (8.28%) PyTorch
4 12 (8.28%) Spring
5 11 (7.59%) LangChain
6 9 (6.21%) REST
7 8 (5.52%) GraphQL
7 8 (5.52%) TensorFlow
8 7 (4.83%) Faiss
9 6 (4.14%) Dask
9 6 (4.14%) Hugging Face
9 6 (4.14%) Node.js
10 4 (2.76%) .NET
10 4 (2.76%) pgvector
11 3 (2.07%) CrewAI
11 3 (2.07%) Gherkin
11 3 (2.07%) Streamlit
11 3 (2.07%) Web Services
Miscellaneous
1 39 (26.90%) Distributed Systems
2 18 (12.41%) Equities
3 12 (8.28%) Data Structures
4 10 (6.90%) Cloud Native
4 10 (6.90%) Distributed Computing
5 6 (4.14%) Derivative
5 6 (4.14%) Fixed Income
5 6 (4.14%) Foreign Exchange (FX)
5 6 (4.14%) Hedge funds
6 5 (3.45%) Product Ownership
7 4 (2.76%) AI Agents
8 3 (2.07%) Blockchain
8 3 (2.07%) Data Protection Act
8 3 (2.07%) Enterprise Software
8 3 (2.07%) Virtual Team
9 2 (1.38%) Autonomous Agent
9 2 (1.38%) Cyber Kill Chain
9 2 (1.38%) Cyber Threat
9 2 (1.38%) Market Risk
9 2 (1.38%) Onboarding
Operating Systems
1 21 (14.48%) Linux
2 6 (4.14%) Windows
3 3 (2.07%) Android
3 3 (2.07%) Apple iOS
3 3 (2.07%) Red Hat Enterprise Linux
4 2 (1.38%) Unix
4 2 (1.38%) Windows Server
5 1 (0.69%) CentOS
5 1 (0.69%) Mac OS
5 1 (0.69%) VMS
Processes & Methodologies
1 62 (42.76%) Software Engineering
2 39 (26.90%) CI/CD
3 34 (23.45%) Problem-Solving
4 33 (22.76%) AI
5 31 (21.38%) Microservices
6 28 (19.31%) Observability
7 26 (17.93%) Agile
7 26 (17.93%) Clean Code
8 25 (17.24%) Machine Learning
9 24 (16.55%) Infrastructure as Code
9 24 (16.55%) Platform Engineering
10 23 (15.86%) LLM
11 15 (10.34%) Containerisation
11 15 (10.34%) DevOps
12 14 (9.66%) Data Pipeline
12 14 (9.66%) Performance Tuning
12 14 (9.66%) Software Delivery
13 13 (8.97%) Computer Science
13 13 (8.97%) Generative AI
13 13 (8.97%) SDLC
Programming Languages
1 87 (60.00%) Python
2 40 (27.59%) Go
2 40 (27.59%) Java
3 26 (17.93%) SQL
4 12 (8.28%) Shell Script
5 10 (6.90%) TypeScript
6 9 (6.21%) JavaScript
7 7 (4.83%) Bash
7 7 (4.83%) Ruby
8 6 (4.14%) C#
9 5 (3.45%) PowerShell
10 4 (2.76%) Scala
11 3 (2.07%) C++
11 3 (2.07%) F#
11 3 (2.07%) Solidity
12 2 (1.38%) Kotlin
12 2 (1.38%) Swift
13 1 (0.69%) C
13 1 (0.69%) Perl
13 1 (0.69%) Rust
Qualifications
1 19 (13.10%) Security Cleared
2 14 (9.66%) SC Cleared
3 12 (8.28%) Degree
4 9 (6.21%) Master's Degree
5 6 (4.14%) PhD
6 5 (3.45%) Computer Science Degree
6 5 (3.45%) DV Cleared
7 2 (1.38%) GPEN
7 2 (1.38%) GWAPT
7 2 (1.38%) MCP
7 2 (1.38%) OSCP
8 1 (0.69%) AWS Certification
8 1 (0.69%) Azure Certification
8 1 (0.69%) BPSS Clearance
8 1 (0.69%) CCSAS
8 1 (0.69%) GXPN
8 1 (0.69%) OSCE
Quality Assurance & Compliance
1 8 (5.52%) QA
2 2 (1.38%) Accessibility
2 2 (1.38%) Cyber Essentials
2 2 (1.38%) Cyber Essentials PLUS
2 2 (1.38%) GDPR
2 2 (1.38%) ISO/IEC 27001
2 2 (1.38%) NCSC
2 2 (1.38%) NIST
3 1 (0.69%) Data Quality
3 1 (0.69%) GxP
3 1 (0.69%) HIPAA
System Software
1 51 (35.17%) Docker
2 5 (3.45%) Virtual Machines
3 2 (1.38%) Active Directory
3 2 (1.38%) Ceph
3 2 (1.38%) HDFS
3 2 (1.38%) KVM
4 1 (0.69%) Apache ZooKeeper
4 1 (0.69%) iptables
4 1 (0.69%) Lustre
4 1 (0.69%) NFS
4 1 (0.69%) Samba
4 1 (0.69%) Slurm Workload Manager
Systems Management
1 48 (33.10%) Kubernetes
2 28 (19.31%) Terraform
3 23 (15.86%) Prometheus
4 22 (15.17%) Grafana
5 9 (6.21%) Ansible
6 2 (1.38%) Argo
6 2 (1.38%) Kibana
6 2 (1.38%) Knative
6 2 (1.38%) Progress Chef
7 1 (0.69%) HAProxy
7 1 (0.69%) SCOM
7 1 (0.69%) SELinux
Vendors
1 12 (8.28%) Sybase
2 7 (4.83%) OpenAI
3 6 (4.14%) Microsoft
4 5 (3.45%) Red Hat
5 4 (2.76%) Google
6 3 (2.07%) Databricks
7 2 (1.38%) Cisco
7 2 (1.38%) Dynatrace
7 2 (1.38%) Foundry
7 2 (1.38%) SAP
7 2 (1.38%) Veracode
8 1 (0.69%) Adobe
8 1 (0.69%) Computacenter
8 1 (0.69%) CrowdStrike
8 1 (0.69%) NVIDIA
8 1 (0.69%) Oracle
8 1 (0.69%) Remedy
8 1 (0.69%) ServiceNow
8 1 (0.69%) Spotify
8 1 (0.69%) VMware