C# .NET Core Developer - Hybrid - Banking

London
3 days ago
Create job alert

Tier 1 Bank - .NET CORE / React / Banking / Architecture

Role - C# Developer / .NET Core Duration - 6 months with very likely extensionLocation - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office

Rate - £415 p/d inside IR35
Tech Stack
C#
.NET Core
SQL / Oracle
React / Typescript Role
Deliver, modernise, and support business-critical applications, frameworks and services across our stack (.NET Framework/.NET Core, HTML/CSS/TypeScript/React, Python, SQL Server, Oracle). The role focuses on refactoring legacy systems to reduce technical debt, improve reliability and performance, and embed modern security patterns across the service estate.
Tasks
Design, build, and maintain server-side and client-side software using .NET (Framework/Core), React/TypeScript, Python, and relational databases (SQL Server, Oracle); contribute to API and UI development, data access layers, and integration points.
Refactor and modernise legacy codebases: modularisation, dependency updates, performance tuning, improved observability, and raising automated test coverage within CI/CD.
Embed modern security patterns and controls across web services: strong authentication/authorization (e.g., OAuth2/OpenID Connect), token-based access, secure session management, least privilege/role-based access, mTLS/TLS hardening, secure secrets handling, input validation and output encoding (OWASP), dependency vulnerability remediation, and policy enforcement via gateways.
Participate in greenfield projects: design and implement new applications and services, ensuring scalability, maintainability, and security from inception.
Database engineering: optimise queries and schemas, implement safe migrations, and tune performance for SQL Server and Oracle workloads.
Quality and release discipline: write and maintain unit/integration tests, participate in code reviews, and adhere to Change Management Control procedures for approvals and production updates.
Operations and collaboration: investigate incidents, diagnose production issues, contribute to runbooks and documentation;GCS is acting as an Employment Business in relation to this vacancy

Related Jobs

View all jobs

C#.Net Developer

Full Stack Developer - C#, .NET, Angular

Net Software Engineer

Junior Developer

Senior Software Developer

Senior .Net Developer

Subscribe to Future Tech Insights for the latest jobs & insights, direct to your inbox.

By subscribing, you agree to our privacy policy and terms of service.

Industry Insights

Discover insightful articles, industry insights, expert tips, and curated resources.

Maths for Cloud Jobs: The Only Topics You Actually Need (& How to Learn Them)

If you are applying for cloud computing jobs in the UK you might have noticed something frustrating: job descriptions rarely ask for “maths” directly yet interviews often drift into capacity, performance, reliability, cost or security trade-offs that are maths in practice. The good news is you do not need degree-level theory to be job-ready. For most roles like Cloud Engineer, DevOps Engineer, Platform Engineer, SRE, Cloud Architect, FinOps Analyst or Cloud Security Engineer you keep coming back to a small set of practical skills: Units, rates & back-of-the-envelope estimation (requests per second, throughput, latency, storage growth) Statistics for reliability & observability (percentiles, error rates, SLOs, error budgets) Capacity planning & queueing intuition (utilisation, saturation, Little’s Law) Cost modelling & optimisation (right-sizing, break-even thinking, cost per transaction) Trade-off reasoning under constraints (performance vs cost vs reliability) This guide explains exactly what to learn plus a 6-week plan & portfolio projects you can publish to prove it.

Neurodiversity in Cloud Computing Careers: Turning Different Thinking into a Superpower

Cloud computing sits at the heart of modern tech. Almost every digital product runs on someone’s cloud platform – from banking apps & streaming services to AI tools & online shops. Behind those platforms are teams of cloud engineers, architects, SREs, security specialists & more. These roles demand problem-solvers who can think in systems, spot patterns, stay calm under pressure & imagine better ways to build & run infrastructure. That makes cloud computing a natural fit for many neurodivergent people – including those with ADHD, autism & dyslexia. If you are neurodivergent & considering a cloud career, you might have heard messages like “you’re too distracted for engineering”, “too literal for stakeholder work” or “too disorganised for operations”. In reality, many traits that come with ADHD, autism & dyslexia are exactly what cloud teams need. This guide is written for cloud computing job seekers in the UK. We will cover: What neurodiversity means in a cloud context How ADHD, autism & dyslexia strengths map to cloud roles Practical workplace adjustments you can ask for under UK law How to talk about neurodivergence in applications & interviews By the end, you should have a clearer sense of where you might thrive in cloud computing – & how to turn “different thinking” into a professional superpower.

Cloud Computing Hiring Trends 2026: What to Watch Out For (For Job Seekers & Recruiters)

As we move into 2026, the cloud computing jobs market in the UK is shifting again. The era of “lift & shift everything to the cloud” is giving way to a more mature, cost-conscious & security-focused phase. Many organisations are tightening budgets, some are rationalising cloud spend, yet demand for strong cloud talent remains high – especially around multi-cloud, FinOps, cloud security, data platforms & AI on cloud. Vendors are racing to integrate generative AI into their offerings, enterprises are modernising legacy estates, & regulators are asking tougher questions about resilience, sovereignty & risk. At the same time, some roles are being automated or commoditised, & the bar for cloud roles keeps rising. Whether you are a cloud job seeker planning your next move, or a recruiter building cloud teams, understanding the key cloud computing hiring trends for 2026 will help you stay ahead.