1 to 25 of 39 Contract Software Engineering Jobs in the City of London

Senior Software Engineer

Hiring Organisation
RedTech Recruitment Ltd
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
Salary
£74,999
Senior Software Engineer A fantastic opportunity for a Senior Software Engineer to join a world-class technology company developing advanced AI-driven software solutions. Working within an exceptional engineering environment, you will play a key role in designing, building and enhancing highly sophisticated software platforms … organisation is known for attracting some of the brightest technical minds in the industry and places a strong emphasis on both academic excellence and engineering capability. Location: Cambridge (minimum 2 days per week in the office) Salary: £75,000 - £80,000 per annum + 15% bonus + benefits Requirements ...

Lead Software Engineer – Python, React & AI

Hiring Organisation
Intelligent Talent Solutions Ltd
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Lead Software Engineer – Python, React & AI London | Hybrid Working | £80,000–£110,000 + Bonus + Benefits | Permanent Intelligent Talent is recruiting experienced Lead Software Engineers (Tech Leads/Technical Lead) for an established international professional services organisation investing in its internal software engineering … This isn't a role focused on maintaining legacy applications or managing developers from a distance. It's about building brand new products and software, making technical decisions and taking responsibility for getting products into production. You'll spend around 70–80% of your time hands-on, working with ...

Lead AI Engineer - TWE47633

Hiring Organisation
Twenty Recruitment Group
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
stakeholders to rapidly prototype, validate and demonstrate AI driven solutions that address real world banking challenges. Rather than focusing solely on large scale production engineering, this role is about innovation, experimentation and proving what is possible. You will take ownership of high-value AI use cases, develop working prototypes … from initial technical exploration through to feasibility validation, demonstration and handover for production development. Build innovative solutions using Microsoft Azure, AI technologies and modern software engineering practices. Design and implement integrations across multiple enterprise data sources, systems and applications, establishing scalable and reusable engineering patterns. Leverage ...

AI Engineering Manager

Hiring Organisation
Anson Mccade
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Engineering Manager £90,000 to 120,000 GBP bonus Hybrid WORKING Location: Central London, Greater London - United Kingdom Type: Permanent AI Engineering Manager Location: UK - Hybrid/Flexible Salary: Up to £120,000 base salary, dependent on experience + Bonus The Opportunity We are seeking an experienced … Engineering Manager to lead the design, development and delivery of innovative AI solutions for complex, large-scale environments. This is a hands-on technical leadership role combining AI engineering, solution architecture, project delivery and people management. You will lead multidisciplinary teams to take AI and machine learning solutions ...

Staff Engineer Python - Energy Trading

Hiring Organisation
Client Server
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Remote
London/WFH to £180k Are you a highly capable Python Engineer excited by the potential of AI, agentic systems and building high-performance software? This is an opportunity to take a leading role in shaping an AI native engineering environment within a fast growing energy technology business. … major investors, the company is transforming how renewable energy is managed and traded across Europe. As a Staff Engineer, you'll combine hands-on software engineering with technical leadership, spearheading the development of a new trading application while driving the adoption of AI across the engineering function. ...

Applied AI Engineer

Hiring Organisation
Sterling Bridge Limited
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
Build Intelligent Products at Scale We're partnered with an innovative technology company looking to bring an experienced Applied AI Engineer into its growing engineering team. This is an opportunity to work on the development of intelligent products and AI-powered applications, taking emerging technologies and turning them into … models and developing prototypes through to building, integrating and deploying production-ready AI systems. The team is looking for someone who enjoys hands-on engineering, understands how to work with modern AI technologies and can move beyond experimentation to build scalable applications. You'll be working with technologies such ...

Principal Engineer - Electronic Pricing - Financial Services - TWE4745

Hiring Organisation
Twenty Recruitment Group
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Company Join a well-established financial markets organisation investing in the development and modernisation of its core technology platforms. The engineering team builds and supports high-throughput, business-critical systems, with a strong emphasis on reliability, scalability, automation and engineering quality. Role As a Principal Engineer, you will … remain hands-on while helping shape the architecture and technical direction of highly available, distributed software platforms. Design and develop backend applications and services within a Java environment. Build and enhance distributed systems operating at high throughput and availability. Design event-driven architectures and integrations using Kafka. Shape technical ...

Platform Engineering Specialist - Database Infrastructure

Hiring Organisation
TurleyWay Limited
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
optimised mission-critical PostgreSQL environments in cloud-first organisations, ensuring performance, availability and resilience at scale? Can you demonstrate broad technical knowledge across Platform Engineering, DevOps and Infrastructure, alongside experience with automation and scripting using Python? Would you like to join a fast-paced, technology-focused financial services business … Engineer to help evolve and scale a growing database infrastructure that supports a demanding and globally distributed technology environment. This is a hands-on engineering role focused on the administration, optimisation and automation of modern database platforms, with a particular emphasis on PostgreSQL, Azure and associated technologies such ...

Data Engineer (Newcastle upon Tyne)

Hiring Organisation
Catalyst
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
maintaining scalable data intensive systems, pipelines and platforms that power analytics, operational systems, and AI-driven products. This role combines full-stack or backend software engineering with modern data engineering, requiring someone with a broad skillset and who excels in solving problems across application development, data pipelines … cloud infrastructure, and platform automation. Key responsibilities include: Software Design : Develop, and maintain production-grade applications and APIs. Application Build : Develop reusable, well-tested code following engineering best practices. Architecture : Participate in architecture and technical design discussions. Testing: Write automated unit, integration, and end-to-end tests. Data ...

Lead D365 Software Engineer

Hiring Organisation
DGH Recruitment
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
Salary
£80,000
Lead D365 Software Engineer The Lead D365 Software Engineer will help drive the evolution of a large-scale Microsoft business applications platform. This is an opportunity to provide technical leadership, define engineering standards, and deliver secure, scalable solutions that support key business operations and customer services. … champion best practices across the development lifecycle. Key Responsibilities - Lead the design, development, and delivery of Dynamics 365 and Power Platform solutions. - Define engineering standards, governance, and best practices. - Develop and maintain integrations between Dynamics 365, Azure, and enterprise systems. - Drive solution quality, security, performance, and scalability. - Support ...

Principal Software Engineer Python AI - FinTech

Hiring Organisation
Client Server
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Principal Software Engineer/Developer (Python AI) London/WFH to £120k Do you have expertise with backend Python combined with a strong knowledge of Agentic AI? You could be progressing your career at an established FinTech business specialising in automated investment reporting . As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python development with technical ownership. You'll lead projects end to end, shape architecture and drive the delivery of new product capabilities, working across backend engineering, data processing and complex financial systems. The business ...

Regulatory Reporting Engineer, Python, SQL

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£900 - £1000/day
role, you will be responsible for designing and developing technology solutions that address global trade and transaction reporting requirements. You will work closely with engineering, compliance, operations, and business stakeholders to ensure that regulatory obligations are translated into robust, scalable technical implementations. Your primary responsibilities will include designing, developing … solutions to enhance accuracy and efficiency will be key aspects of your role. You will also optimise data processing frameworks and support the full software development lifecycle, including production monitoring and troubleshooting. Leveraging modern data engineering technologies and AI-enabled workflows to improve automation and control frameworks ...

Member of Technical Staff, Full Stack

Hiring Organisation
FBI &TMT
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
technology organisation operating in the artificial intelligence and video intelligence sector, is seeking a Member of Technical Staff, Full Stack to join its core engineering team on a permanent basis. The role will involve designing, building and scaling systems that process video and sensor data, while delivering AI-powered … user-facing applications using TypeScript and React, including modern tools such as React Query and Tailwind Contribute to infrastructure, system architecture and cloud-native engineering decisions Work on distributed systems, real-time processing, high availability and system performance Collaborate effectively with AI, product and infrastructure teams to deliver reliable ...

Founding AI Engineer

Hiring Organisation
Run-Time Group Ltd
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
intelligence and structured data and is looking for an experienced AI Engineer to unlock its value through modern AI applications. Working closely with Product, Engineering, Data and business stakeholders, you'll lead the design and delivery of AI-powered products that help users search information, analyse data, automate workflows … building demos that never leave the prototype stage. Requirements Experience building and deploying AI or LLM-powered applications used by real users Strong Python engineering skills Experience with prompt engineering, tool calling and model integrations Experience designing and consuming REST APIs Knowledge of RAG, information retrieval and search ...

AI Architect

Hiring Organisation
Hackajob Ltd
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
aligned with its parent group Responsible AI standards. This is a senior individual-contributor role with broad influence. You will partner closely with Engineering Leads, Product Managers, Data Scientists, and data teams within our client. Key Responsibilities: Define and own the AI architecture vision for Protégé in PatentSight+, ensuring … driven enrichment and classification of patent data at scale, ensuring results are dependable, auditable, and consistent with established IP metrics. Establish prompt engineering standards, evaluation harnesses, and quality frameworks to govern LLM behaviour and maintain output accuracy in production. Partner with Product Management to assess technical feasibility and shape ...

Python Developer

Hiring Organisation
Sanderson Government and Defence
Location
City of London, South East, United Kingdom
Employment Type
Temporary Contract, On-site
Salary
Negotiable
site in London £450-£650 outside IR35 Requires Active SC Clearance The Role We are seeking an experienced Python Developer to join a growing engineering team delivering secure, cloud-native solutions within a highly regulated environment. You will be responsible for designing, developing and maintaining Python-based applications …/CD pipelines and collaborative development through Git and pull request workflows. Review and contribute to code within other teams' repositories. Work closely with engineering, security and operational teams to identify and resolve technical challenges. Produce technical documentation, integration guidance and implementation standards where required. Essential Skills & Experience Technical ...

Senior Technical Architect - Custody & Securities Services

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£750 - £850/day
Securities Settlements, Asset Servicing, Transaction Management, Cash & FX Processing and Tax Operations. This is a high-impact role where you will partner with engineering, product and business stakeholders to define architecture strategy, drive platform transformation, establish governance standards and ensure solutions are scalable, resilient and fit for future growth. … remediation strategies. Build proof-of-concepts to validate new technologies and integration approaches. Explore opportunities to leverage Generative AI and emerging technologies to improve engineering productivity and governance processes. Required Experience Extensive experience working as a Technical Architect, Solution Architect or Lead Architect within Financial Services. Strong understanding ...

Salesforce Forward Deployed Engineer

Hiring Organisation
83zero Limited
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£90,000
hands-on Salesforce Forward Deployed Engineer to design, build and deliver intelligent, AI-powered solutions for major enterprise organisations. This is an engineering role, not a Salesforce configuration position. You'll work across Salesforce development, Agentforce, generative AI and enterprise integration to turn complex business challenges into production-ready … through Salesforce Data Cloud and wider integration platforms. Build integrations using REST/SOAP APIs, MuleSoft, Platform Events and event-driven architecture. Apply prompt engineering, retrieval-augmented generation (RAG), grounding and techniques to reduce AI hallucinations. Test and evaluate AI solutions for accuracy, quality, cost and performance. Work directly ...

Senior Software Engineer

Hiring Organisation
Tyréns AKT
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
well as Copenhagen and Toronto internationally. We are therefore expanding our London studio. The position. Tyréns AKT has an in-house Software Development Team – comprised of software developers and computational designers – that creates bespoke software tools to support the company's many specialisms: structural engineering, façade … design, geotechnical design, bioclimatic analysis, and so on. We're looking for a Senior Software Engineer to join our growing team! The role and responsibilities. As a Developer you will report to an Associate or Associate Director, and your responsibilities could include, but will not be limited ...

Senior Machine Learning Engineer I

Hiring Organisation
Hackajob Ltd
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
Google ADK, pandas and FAISS. Help develop and evolve AWS platform infrastructure using Terraform, including RDS instances and EKS clusters. Mentor junior developers in engineering best practices, including test-driven development with pytest and idiomatic Python. Write and review detailed technical specifications for moderately complex system components. Participate actively … Requirements Experience working with modern Python codebases. Experience with AWS or a comparable cloud platform, including infrastructure-as-code practices. A solid understanding of software engineering principles, techniques and delivery processes. Experience with generative AI and agentic AI systems. Strong interpersonal, communication and presentation skills, with the ability ...

ETF Platform Developer (Python)

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day Inside IR35
portfolio management and investment decision-making. The successful candidate will play a key role in modernising and scaling existing trading and investment tools, improving engineering quality, reducing technical debt and delivering new capabilities across a sophisticated front-office environment. Key Responsibilities Design, develop and support production-grade Python applications … business-critical enhancements Strengthen monitoring, observability, testing and production support capabilities Contribute to architecture decisions and application modernisation initiatives Required Skills Strong commercial Python engineering experience Experience building and supporting production applications PostgreSQL and Snowflake expertise AWS cloud experience (ECS, EKS, Lambda, S3, RDS or similar) CI/ ...

Deployed AI Engineer (Senior Consultant)

Hiring Organisation
Enablis
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£92,000
growing client pipeline. This hire will play a key part in taking that capability forward. The Role This is a hands-on AI Engineering role at Senior Consultant level. You'll work alongside our CTO and engineering leadership, you'll work in a small pod - typically with … architectures, LLM integrations and protocol-driven tooling (MCP, tool orchestration) Iterating in short loops: demoing every few days, taking feedback, changing course without ceremony Engineering for production from day one: guardrails, security and integration into the client's estate, scalability and telemetry - designed inside the build, not bolted ...

Data Architect

Hiring Organisation
Hackajob Ltd
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
frameworks Govern and support technical delivery of those solutions Line manage, mentor, train and develop others Qualifications: You will have a strong architecture and software engineering background, have led teams of engineers or other architects and be able to contribute to our internal data strategy and thought leadership … with unmatched industry experience, functional expertise and global delivery capability. Our broad range of services, solutions and assets across Strategy & Consulting, Technology, Operations, Engineering and Creative, together with our culture of shared success and commitment to creating 360° value, enable us to help our clients reinvent and build trusted ...

Senior Software Engineer

Hiring Organisation
Method-Resourcing
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
Senior Software Engineer: Sports Betting Up to £120,000 + Bonus + Excellent Benefits London - 5 Days On-Site | Python | Java | AI | Low Latency | Distributed Systems Build software where performance, mathematics and real-time decision-making genuinely matter. We're partnering with a highly technical sports betting business … continuing to invest in its engineering function. They're looking for Senior Software Engineers to work on complex backend systems operating across real-time data, quantitative problems and high-performance distributed architecture. This is an opportunity for engineers who enjoy difficult technical problems rather than simply delivering features ...

Geospatial Data Engineer

Hiring Organisation
Coburg Banks Limited
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£90,000
role where you'll play a key part in building accurate, reliable transport datasets and developing the data pipelines and spatial models that underpin software solutions. Working closely with the development team, you'll help transform complex and fragmented data into high-quality, structured information to support location recognition … geofencing and the automation of transport-related processes. You'll have the opportunity to work with modern data engineering technologies, including AI-assisted data processing, while tackling interesting technical challenges involving mapping accuracy and real-world location data. The Role Build and maintain data pipelines to ingest, clean, standardise ...