senior mainframe developer jobs in Islington

Development Management Implementation (DMI) Senior EngineerExperience, qualification, and soft skills, have you got everything required to succeed in this opportunity Find out below.Are you a dynamic, creative and delivery focused Highways Engineering / Transport Planning professional. Can you use your first-rate technical skills to assist Tetra Tech in a new and exciting relationship with...

You will be responsible for executing sophisticated visual designs and building complex web applications within an Agile environment. This role is perfect for someone who balances technical rigor with an impeccable eye for design "visual grammar.

Business Development Director – Private Equity & Real Estate Skills, Experience, Qualifications, If you have the right match for this opportunity, then make sure to apply today. Fairmont Crest Executive Recruitment has been appointed to lead the search for an exceptional Business Development Director on behalf of a high-growth professional services firm operating within the Private Equity and...

International Business Development Executive UK (London / Manchester / Birmingham) c. £45,000 | Hybrid (2 days office) A global professional services firm is hiring a new International Business Development Executive to support its growing international BD agenda. This is a brand-new role, working closely with a senior international BD lead to help coordinate and deliver cross-border business...

You will act as a consultant to senior stakeholders at some of the world’s most recognised brands, educating them on how to transform their media mix through authenticity. Key Responsibilities: Build and nurture a high-value pipeline within the FMCG, Electronics, and Beauty sectors.

Real Estate Development Solicitors Associate (2–4 PQE) | Senior Associate (5–8 PQE) Birmingham or London A highly regarded real estate development practice is looking to appoint both an Associate (2–4 PQE) and a Senior Associate (5–8 PQE) to support continued growth. The role focuses on residential development and site acquisition work, acting for a broad client base including developers,...

You will ensure the strategic and operational objectives of the marketing team are delivered effectively within our leading intellectual property firm, supporting business growth and profile-raising activity across the firm.

You will be a senior marketing and business development professional with experience in professional services, operating at senior management level.

You will take a lead role in building high-quality, accessible, and maintainable front-end solutions across a single-page admin platform and a progressive web application. Working closely with UX, design, and backend developers, you will help shape front-end architecture, improve performance, and mentor other engineers.

You will be a confident, proactive developer who enjoys solving problems, collaborating effectively, and taking ownership of your work.

The opportunity As a Senior C++ Developer, you won’t be maintaining legacy code or adding features at the edges. You have the option to work fully remote or partically remote with access to the clients offices. You’ll be designing and building core systems that will ultimately run on millions of industrial edge devices, shaping how they authenticate, communicate, and trust one another — from the...

Ref: SAL 23206 The Skills You'll Need: EUC development with SQL, VBA, AWS RDS, Corporate banking Your New Salary: £50-£55k Permanent, Full time Start: ASAP EUC development Senior consultant - What You'll be Doing: * The Business SME will ensure operational continuity and data integrity by bridging business requirements and technical design across Loan IQ's operation and data. * The role...

Senior Full Stack Developer Contract Length: Initial 1 month with strong potential for extension Location: Remote Day rate: £600 - £700 per day outside IR35 Data Idols are working with a private equity-backed data analytics and insights business, is seeking a Full Stack Developer to lead a discovery and assessment phase across its existing product platforms. The organisation operates multiple...

Senior C#. NET Developer Location: London (Hybrid) Contract: 6 months IR35: Inside IR35 Our client, a leading global investment bank, is looking for an experienced C#. NET Developer to join their team on a 6-month contract. This role is pivotal in modernising and supporting business-critical applications while contributing to greenfield development initiatives. Key Responsibilities Design,...

Job Title: Senior Infrastructure Developer Location: London (3-days per week on-site) Rate: Flexible dependent on experience (inside IR35) Duration: 6 months Tec Partners are working with a world-leading technology client who are currently looking for an experienced Senior Infrastructure Developer, with a strong background in infrastructure automation, Python and VMware Cloud Foundation (VCF)...

Senior C# .NET Developer React, AZURE, Elastic, CouchDB / NoSQL Hybrid ( 1 day a week in office, 4 days WFH) Established, profitable company. Join a team of x5 Devs (all long term employees) - hiring x3 more. * Scalable B2B online booking & pricing system. Currently receives up to 120M transactions daily * Build New functionality * Work with others to design new architecture * Re-factor *...

Senior C# Developer Location: London (Fully Onsite) Employment Type: Permanent Salary: £50,000 - £60,000 (DOE) Visa Sponsorship: Not available We're working with a London-based organisation that is looking to hire an experienced Senior C# Developer to join their engineering team in a fully onsite position. This role is ideal for someone who enjoys hands-on development, working closely with the...

We’re looking for a Senior-level Software Engineer with strong JavaScript/TypeScript skills and experience across modern web stacks. You’ll be instrumental in our transition away from Drupal as we modernise and scale our platform. Tech Stack: At least 6-8 years commercial experience with JavaScript or TypeScript and Node Exposure of Laravel and/or Python (Django or Flask a...

You will be working on new projects on the core web platform with other great developers in the UK.

You will have the opportunity to attend regular Development team events, professional development opportunities and potentially travel overseas to their international offices if this is of interest.

Senior Developer - Active SC, Java, Oracle Up to £550 per day (Inside IR35) London / Hybrid 6 months My client is an instantly recognisable consultancy who urgently require a Senior Developer with Active Security Clearance (SC), to join a business-critical programme. Key Requirements: Proven experience working as a Senior Developer within the public sector. Active Security Clearance...

You will play a key role in designing, developing, and maintaining applications built using Laravel, PHP, Vue, TypeScript, MySQL, and AWS services. The position combines hands-on development with technical leadership, contributing to architectural decisions, modernisation of legacy systems, and mentoring of other developers.