22 of 22 Design Patterns Jobs in the City of London

Head of Mobile Engineering & Architecture - React & AWS

Hiring Organisation
Sanderson Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £900 per day + Outside IR35
best practices to transform our savings and investment platform. Responsibilities Set technical direction: Define & maintain Mobile and Front end/Web software architecture and patterns, engineering standards and the 'right way' to build greenfield, state of the art web and mobile applications. Own a technical 'opinionated' architecture for front … Extensive Mobile software engineering and significant experience of architecture Deep understanding of Front End/Web and Mobile architecture approaches and design patterns including micro front ends, module federation, stateless, SPA and others Advanced knowledge of React and React Native Eco system and AWS technology stack. Strong ...

Product Design/Engineer - Inside IR35 - News Publication

Hiring Organisation
SRG
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£650 per day
Design Engineer (AI Products) - National News Platform Day rate: £650 (Inside IR35) Duration: 6 months Location: Central London (Hybrid - 2-3 office days) We're looking for a Design Engineer with strong UX/UI craft, interaction design expertise, and front-end product-building … user interfaces Comfortable owning a feature end-to-end , from concept sketches to polished UI Nice to Have Experience with native design patterns (iOS/Android) Familiarity with RAG, embeddings, vector databases Python (for small prototyping tasks) Design system experience (creation or contribution) Experience designing ...

Lead Java Developer

Hiring Organisation
Russell Tobin
Location
City of London, London, United Kingdom
technology partners , contributing directly to the performance, resilience, and evolution of a mission-critical e-trading platform. What You’ll Be Doing Design, build, and enhance a robust, ultra-low latency Fixed Income electronic trading platform Lead the adoption and optimisation of TransFICC connectivity within the eFI ecosystem … into broader trading platforms (pricing, algo trading, STP) Deep knowledge of Core Java , object-oriented design, and low-latency design patterns Hands-on experience with: Performance profiling and monitoring Building fault-tolerant, high-throughput systems Linux-based environments Network protocols: TCP, UDP, Ethernet, HTTP Experience ...

Senior Java Microservices AWS developer

Hiring Organisation
DCV Technologies Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
week from office) 6 months contract position The Role As Senior Java Microservices AWS developer with a strong hands-on experience, you will design and develop scalable, cloud-native web applications using Java and AWS Serverless architecture Model. Your responsibilities: Design and develop web applications using … latest) Proficiency in Spring Boot, Microservices architecture, and Core Spring Experience with Java Server-Side Concurrent Programming, Multithreading, and Design Patterns Deep understanding of AWS Cloud services, including: Serverless Architecture (Lambda, DynamoDB, ECS Fargate) Core AWS services: EC2, S3, RDS, API Gateway, SQS, SNS, Kinesis, CloudWatch, CloudFormation ...

LLM, RAG & Agentic Consulting Engineer - Insurance Sector

Hiring Organisation
Staffworx Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
insurance scale Reusable Assets & Insurance AI Capability Building As part of a consulting-led engineering practice, you will: Build reusable insurance-specific accelerators, agent patterns and reference architectures Contribute to internal playbooks covering claims, underwriting, policy servicing and compliance use cases Share emerging research, frameworks and AI trends relevant … insurance sector Influence delivery methodology, technical standards and agentic design patterns for regulated industries Experience & Skills This is a senior, hands-on consulting engineering role. Candidates should bring: Experience in software engineering, AI engineering or applied data engineering Strong hands-on experience with LLMs, embeddings, RAG pipelines ...

Technical Assessment Lead - 6 month FTC

Hiring Organisation
TPXImpact Holdings Plc
Location
City of London, London, United Kingdom
Employment Type
Temporary
Salary
£85,000
compromising on quality or culture. Responsibilities Conduct in-depth technical assessments and code reviews for engineering candidates. Lead technical interviews focused on software design, coding quality, systems thinking, and consultancy skills. Develop and maintain high-quality assessment frameworks and rubrics. Ensure assessment processes are fair, inclusive, and consistently … Familiarity with inclusive hiring practices and building diverse teams. Skills Technical Assessment & Evaluation: Deep expertise in reviewing code and evaluating architecture, design patterns, and problem-solving approaches. Consistent and objective application of scoring frameworks and rubrics. Ability to assess candidate potential, not just experience. Collaboration & Coaching: Ability ...

LLM, RAG & Agentic AI Engineer – Insurance Sector

Hiring Organisation
Staffworx
Location
City Of London, England, United Kingdom
insurance scale Reusable Assets & Insurance AI Capability Building As part of a consulting-led engineering practice, you will: Build reusable insurance-specific accelerators, agent patterns and reference architectures Contribute to internal playbooks covering claims, underwriting, policy servicing and compliance use cases Share emerging research, frameworks and AI trends relevant … insurance sector Influence delivery methodology, technical standards and agentic design patterns for regulated industries Experience & Skills This is a hands-on consulting engineering role. Candidates should bring: Experience in software engineering, AI engineering or applied data engineering Strong hands-on experience with LLMs, embeddings, RAG pipelines ...

Senior Java Developer

Hiring Organisation
Vallum Associates Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 per day
Your responsibilities: Design and develop web applications using Java (latest versions), Spring Boot, and AWS technologies. Architect and implement RESTful APIs for distributed enterprise-grade systems. Develop robust, scalable, and high-performance microservices leveraging Spring Boot and modern design patterns. Integrate and manage AWS services such … latest) Proficiency in Spring Boot, Microservices architecture, and Core Spring Experience with Java Server-Side Concurrent Programming, Multithreading, and Design Patterns Deep understanding of AWS Cloud services, including: Serverless Architecture (Lambda, DynamoDB, ECS Fargate) Core AWS services: EC2, S3, RDS, API Gateway, SQS, SNS, Kinesis, CloudWatch, CloudFormation ...

Quality Assurance Automation Engineer

Hiring Organisation
Retelligence
Location
City of London, London, United Kingdom
active culture of using AI tools (Copilot, LLMs, MCPs) to accelerate framework builds. Your Impact Architecting Quality: Partner with senior leads to design and maintain scalable regression suites that support complex, event-driven financial products. Deep-Dive Analysis: Move beyond surface-level checks; you will utilize … finance, payments, or high-stakes transactional systems. Code-First Mindset: You are proficient in C# and understand object-oriented principles, design patterns, and how to write maintainable test code. Naturally Curious: You aren't satisfied with a "pass" result—you want to understand the underlying infrastructure, from ...

Python Developer

Hiring Organisation
Neev
Location
City of London, London, United Kingdom
with AWS Serverless (Lambda, DynamoDB, API Gateway, SNS, SQS, S3, ECS, EKS, X-Ray), Microservices Architecture , Strong Oops concepts, Familiarity with Design Patterns , Devops. We are seeking a highly skilled Developers to develop, and maintain serverless applications using Python and AWS technologies. The ideal candidate will have ...

Senior Front Office Developer - Trading

Hiring Organisation
CMC Markets UK Plc
Location
City of London, London, United Kingdom
Employment Type
Permanent
programming techniques so experience in this area is essential . As a Senior Developer, youll not only code but also take on key design responsibilities, shaping impactful projects. You'll mentor junior members of the team, driving innovation in a fast-paced, high-stakes environment. If youre ready … ideally in pricing or risk-related applications. Not just a coder, but someone wh o also focuses on applying best practices, design patterns and principles to develop scalable, maintain able and high-quality code. Someone who enjoys maths/logic problems and challenges Familiarity with electronic trading ...

Founding Engineer

Hiring Organisation
Jack & Jill
Location
City of London, London, United Kingdom
What you will do: Build and maintain full-stack features using TypeScript across the entire product ecosystem. Design and implement scalable software patterns and database schemas to handle production workloads. Drive product direction by translating complex operational problems into simple, high-impact software solutions. The ideal candidate … Deep proficiency in TypeScript with over 4 years of experience shipping production-level software. Strong background in software design patterns and managing live workloads on cloud providers. Product-focused mindset with the ability to move fast and turn messy problems into working code. Who are Jack & Jill ...

Machine Learning Engineer Python AWS

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
others to overcome technical challenges You have a good knowledge of modern software engineering best practices, microservices, TDD/DDD, common Design Patterns Experience with Databricks, PostgreSQL, Amazon RedShift or MLflow would be great but not essential What's in it for you: As a Machine Learning ...

Senior Unity Engineer

Hiring Organisation
Huckleberry Sport
Location
City of London, London, United Kingdom
general systems and editor tooling that support our games and their features and functionality. You will collaborate closely with other engineering teams, design, production, QA, and other stakeholders in the studio to deliver high-quality user experiences on multiple platforms including desktop, console, and mobile. Your contributions will … essential. Experience developing Unity editor tooling and systems that support multi-disciplinary teams. Solid understanding of software engineering principles, design patterns, and profiling and performance optimisation. Proven ability to write clean, maintainable, portable, performant and well-documented code. Familiarity with C++ is beneficial, particularly in contexts where ...

Senior Java Developer

Hiring Organisation
Vallum Associates Limited
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 500 Daily
Your responsibilities: Design and develop web applications using Java (latest versions), Spring Boot, and AWS technologies. Architect … implement RESTful APIs for distributed enterprise-grade systems. Develop robust, scalable, and high-performance microservices leveraging Spring Boot and modern design patterns click apply for full job details ...

Smart Contract Engineer

Hiring Organisation
Plexus Resource Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
great opportunity to join a fast growing startup building core infrastructure for decentralised finance. They are looking for a solidity engineer to design and ship secure, production grade smart contracts that will power high value financial products like … stablecoins, liquidity infrastructure, and DeFi protocols. Role: Design, develop, and maintain advanced Solidity smart contracts Contribute to protocol architecture, design patterns, and technical direction Write unit, integration, and fuzz tests using Foundry or similar frameworks Optimise and debug smart contracts for gas efficiency,performance ...

Java Swing Developer

Hiring Organisation
Caspian One
Location
City of London, London, United Kingdom
TCP. Collaborate on plans to decouple UI and introduce microservices. What We’re Looking For Strong Core Java skills and solid understanding of design patterns. Ability to work with multithreaded architectures and optimise performance. Java Swing experience Familiarity with microservices concepts and willingness to transition into modern architecture. ...

Senior Python Engineer

Hiring Organisation
Safe Intelligence
Location
City of London, London, United Kingdom
Requirements : The technical requirements for the role are: Extensive professional experience as a Python-based developer. Experience with modern Python development techniques and design patterns. Experience with the development of highly parallelised applications, including memory management. Experience with widely used tools in data science and machine learning. Developers ...

iOS Developer

Hiring Organisation
Expedia Group
Location
City of London, London, United Kingdom
direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform. In this role, you will: Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group’s product suite. Architect and implement robust, scalable …/ML concepts to real world products. Preferred Qualifications: Experience architecting scalable, complex, modular, and maintainable iOS mobile architectures, leveraging common design patterns such as MVVM or VIPER Advanced proficiency in SwiftUI - Skilled in multi-threading, concurrency, and performance optimisation Prior experience in the search domain ...

Founding Engineer | Profitable Startup

Hiring Organisation
Jelly
Location
City of London, London, United Kingdom
clear ownership, read on. You’ll Work With JJ (Founder) Robert (Senior engineer) Dol (Senior engineer) Abbie (Customer success) Saif (Growth) Raul (Design) Philippine team (Support) You’ll thrive here if You are driven You want to move fast. Turn messy problems into working software in a week … than you found them Must-haves Typescript : deep understanding of both front-end and back-end usage Backend : proficiency in software design patterns Cloud provider : experience running live production workloads in the cloud Relational database : confident writing queries, designing schemas, and shipping DB changes without downtime Latest ...

Senior Frontend Engineer

Hiring Organisation
Plexus Resource Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
engineers to build and maintain high-quality web applications. Write clean, efficient and maintainable code that meets industry standards. Implement responsive design patterns to ensure optimal viewing and interaction across a variety of devices. Requirements: Expertise in JavaScript, TypeScript and React. Experience in leading technical products. ...

Solutions Architect

Hiring Organisation
Reward Gateway
Location
City of London, London, United Kingdom
with CRM tools (Braze, Heap.io, LaunchDarkly) and broader ecosystem Support convergence initiatives with platforms like Smarter and Explorer Technical Leadership Championing technology standards and patterns across engineering teams Contributing to enterprise roadmaps and technology strategy Guide engineering teams on architectural best practices Participate in code reviews and mentor developers … creation and maintenance of architectural decision records. Participate in architecture review processes and approval workflows Ensure compliance with enterprise architecture standards and patterns, identifying and controlling divergences from established patterns Escalate architectural decisions that require broader organisational input Skills and experience required: A proven track record and senior ...