1 to 25 of 235 OO Jobs in London

Senior Lead Full-Stack Software Engineer

Location
Greater London, England, United Kingdom
/CD, application resiliency, security, Git/GitHub, and Test Driven Development. Strong proficiency in Python, with a deep understanding of object-oriented programming principles. Strong proficiency in SQL, with experience of building data pipelines, data models, and data transformation within data warehouses, knowledge of tools such ...

Lead Software Engineer, Full-Stack Applications - AI Fluent (London)

Location
Greater London, England, United Kingdom
frontend development practices. Experience designing and developing RESTful APIs and integrating with third-party services. Solid understanding of software design principles, design patterns, object-oriented programming, data structures, algorithms, and scalable system architecture. Experience working with relational and NoSQL databases. Familiarity with Agile development methodologies and modern software ...

Senior C# .Net Developer

Location
Greater London, England, United Kingdom
6+ ASP.NET Core/Web API REST APIs and microservices SQL Server, including complex queries, stored procedures and optimisation Entity Framework/ORM Object-oriented design and design patterns Distributed systems and enterprise integration Unit and automated testing Azure DevOps, Git and CI/CD Agile/Scrum ...

Senior C# .Net Developer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500/day Umbrella Inside IR35
6+ ASP.NET Core/Web API REST APIs and microservices SQL Server, including complex queries, stored procedures and optimisation Entity Framework/ORM Object-oriented design and design patterns Distributed systems and enterprise integration Unit and automated testing Azure DevOps, Git and CI/CD Agile/Scrum ...

Sr. Full Stack Developer (Java, React & Python)

Location
City Of London, England, United Kingdom
development and integration.Proven track record in developing base frameworks, reusable programs and defining standards.Knowledge of cloud platforms AWS and containerization technologies.Strong understanding of object-oriented programming principles and design patterns.Proficiency in database design and SQ and NoSQL databases like Redis, DynamoDB.Good understanding of the Agile methodologies and working ...

Sr. Full Stack Developer (Java, React & Python)

Hiring Organisation
Broadridge
Location
London, UK
Employment Type
Full-time
Proven track record in developing base frameworks, reusable programs and defining standards. Knowledge of cloud platforms AWS and containerization technologies. Strong understanding of object-oriented programming principles and design patterns. Proficiency in database design and SQ and NoSQL databases like Redis, DynamoDB.Good understanding of the Agile methodologies ...

Sr. Full Stack Developer

Location
Greater London, England, United Kingdom
Proven track record in developing base frameworks, reusable programs and defining standards.* Knowledge of cloud platforms AWS and containerization technologies.* Strong understanding of object-oriented programming principles and design patterns.* Proficiency in database design and SQ and NoSQL databases like Redis, DynamoDB.* Good understanding of the Agile methodologies ...

Technical Lead

Location
Greater London, England, United Kingdom
solutions, e.g., K8, Docker, Kaniko, etc. Proficiency in at least one of the standard programming languages – Java/JavaScript, C#, Python, or similar Object-oriented programming Proficiency in at least one of the standard scripting languages – Terraform, Bash, Ansible, etc. Good understanding of Software engineering concepts, e.g., coding ...

Software Development Engineer in Test

Hiring Organisation
S Three Management Services Limited
Location
London, England, United Kingdom
behaviour and quality risks What you could bring Most roles of this type require the following: Must-have Proficiency in at least one object-oriented programming language, such as Java, C#, Python or similar Hands-on experience building and maintaining test automation frameworks Working knowledge of APIs, microservices ...

Senior Software Engineer II -Java

Location
Greater London, England, United Kingdom
troubleshoot complex production and customer issues. Mentor and guide junior engineers, fostering a culture of collaboration and continuous learning. Requirements Strong foundation in object-oriented design, development, and standard design patterns. Expert-level development experience using Java, Spring Boot and Web Services. Strong understanding of REST APIs, Spring ...

Senior Java Developer

Hiring Organisation
CGI
Location
London, England, United Kingdom
Java (version 8 or higher) and Spring Boot.• Proven experience designing, developing and maintaining enterprise-level back-end applications.• Strong understanding of object-oriented programming, software design principles and RESTful API development.• Experience working in Agile environments, including Scrum ceremonies and iterative software delivery.• Proficiency with development ...

Senior Python Developer/ Engineer

Location
City of Westminster, England, United Kingdom
Docker and AWS ECS/Fargate. Experience integrating with third‐party APIs, enterprise platforms, and external services. Strong understanding of software design patterns, object‐oriented programming principles, clean code practices, and distributed system design. Experience implementing API security using OAuth2, JWT, OpenID Connect, API Keys, and secure authentication ...

Software Engineer II - Blockchain/ Digital Assets

Location
Greater London, England, United Kingdom
software engineering experience with Java Spring Boot/Python or similar modern backend frameworks Understanding of software development fundamentals: data structures, algorithms, object-oriented design Experience with version control (Git) and working in collaborative development environments Eagerness to learn distributed systems, blockchain technologies, and cloud-native architectures Strong ...

Senior Java Developer

Hiring Organisation
Avanti Recruitment
Location
EC1, Farringdon, Greater London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £75000/annum
commercial frontend development experience using Angular, React or Vue.js. Good understanding of relational databases, including writing and troubleshooting SQL queries. Strong understanding of object-oriented programming, software engineering principles and design patterns. Experience developing and maintaining complex enterprise applications. Familiarity with Git, testing, debugging and modern software development ...

Senior Fullstack Java Developer

Hiring Organisation
Avanti Recruitment
Location
EC1, Farringdon, Greater London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £75000/annum
commercial frontend development experience using Angular, React or Vue.js. Good understanding of relational databases, including writing and troubleshooting SQL queries. Strong understanding of object-oriented programming, software engineering principles and design patterns. Experience developing and maintaining complex enterprise applications. Familiarity with Git, testing, debugging and modern software development ...

Senior C# .Net Developer

Location
Greater London, England, United Kingdom
6+ ASP.NET Core/Web API REST APIs and microservices SQL Server, including complex queries, stored procedures and optimisation Entity Framework/ORM Object-oriented design and design patterns Distributed systems and enterprise integration Unit and automated testing Azure DevOps, Git and CI/CD Strong troubleshooting ...

Software Engineer - Java

Location
Greater London, England, United Kingdom
exposure to Java and/or Python (e.g., Core Java, collections, basic concurrency; interest in Java 17+). Solid computer science fundamentals, including object-oriented design, data structures, and algorithms. Bachelor’s degree in Computer Science, Engineering, or a related technical field from a leading institution, or equivalent ...

QE AI Engineer (Python)

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
with web, API, and non-functional testing approaches Experience using CI/CD pipelines to integrate and run automated tests Good understanding of object-oriented programming principles and modern engineering practices Experience working with Git-based source control and collaborative development workflows Strong problem-solving and analytical skills ...

Lead Software Engineer

Location
Greater London, England, United Kingdom
knowledge of software engineering concepts and principles with a deep understanding of emerging technologies and industry trends Understanding of Python advanced concepts including Object Oriented Programming (OOP), Concurrency, decorators, recursion Understanding of cloud deployment (e.g. AWS, Azure) and Linux scripting (e.g. bash) Advanced Docker skills with a deep ...

Senior Platform Engineer

Hiring Organisation
WTW
Location
London, England, United Kingdom
requirements analysis, estimation, architecture/design, implementation, unit and system testing, deployment, operations, monitoring and incident management. Software engineering fundamentals Strong grounding in object oriented design, design patterns, SOLID principles, clean code practices, code review, documentation and Agile delivery. Core technical stack Hands‐on experience with C# ...

Senior Backend Engineer

Location
Greater London, England, United Kingdom
GraphQL APIs written in Python3. What we’re looking for... Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience in C++/C#/Java/etc would also be considered) Experience working on mission-critical applications, following a robust ...

Azure CloudOps Engineer

Location
Greater London, England, United Kingdom
observability platforms such as Splunk, Datadog, Grafana, Prometheus, Dynatrace, or similar technologies. Experience with AI-driven operational tooling and automated incident response solutions. Object-oriented programming experience. Experience working within Product Engineering, Software Engineering, or R&D environments. Experience supporting highly available, business-critical systems. Cloud certifications across ...

Microsoft Consultant

Location
Greater London, England, United Kingdom
Microsoft technology ecosystem. Key Skills Strong commercial experience with C# and .NET. Experience developing applications using ASP.NET/ASP.NET Core. Good understanding of object-oriented programming and software development principles. Experience developing and consuming REST APIs/web services. Strong understanding of software development lifecycle and coding best ...

Senior Backend Engineer (Ruby)

Location
Greater London, England, United Kingdom
write performant SQL (PostgreSQL focus), with a keen eye for avoiding and resolving N+1 queries and lock contention A firm grasp of Object-Oriented Analysis and Design (OOAD), design patterns, and software engineering best practices Experience designing and maintaining versioned, documented RESTful APIs Experience writing comprehensive automated tests ...

Senior Data Scientist I

Hiring Organisation
Elsevier
Location
Greater London, United Kingdom
Employment Type
Full Time
Salary
53800 to 89900 EUR Annually
trust. Tools and Technologies Experience with some of the following is valuable: Strong software engineering and data science expertise, including Python, SQL, object-oriented programming, testing, CI/CD, DevOps, APIs, databases, and modern collaborative development practices using tools such as Git, Jira, GitHub, and GitLab. Hands ...