At a Glance
- Tasks: Design, build, and optimise cutting-edge digital systems in a collaborative environment.
- Company: Join a highly regarded enterprise software business with a focus on innovation.
- Benefits: Competitive daily rate, hybrid work model, and opportunities for professional growth.
- Other info: Dynamic role with excellent career advancement opportunities in a fast-paced tech environment.
- Why this job: Make a real impact on AI/ML projects and cloud infrastructure.
- Qualifications: 5+ years of software engineering experience with strong backend and platform skills.
The predicted salary is between 60000 - 80000 £ per year.
Contract: Initial 6 Months
Location: London (Hybrid – 3 Days Onsite Minimum)
Start Date: ASAP
Engagement: Full-Time Contract
IR35: Outside
Rate: £500-£600 per day
We’re working with a highly regarded enterprise software business seeking a Senior Platform Engineer to support a major phase of product and platform delivery. This is a hands-on contract role for a senior engineer who can quickly integrate into an established engineering function and contribute from day one across backend engineering, cloud infrastructure, platform architecture and AI/ML-enabled product initiatives.
You’ll work closely with engineering leadership and cross-functional teams to help deliver critical roadmap objectives, contributing directly to the design, build, deployment and optimisation of production systems used by enterprise customers.
The Opportunity
This engagement combines backend engineering, platform infrastructure, cloud architecture and enterprise integrations, with opportunities to support AI/ML feature development, data analysis and visualisation depending on project needs.
We’re looking for someone who combines strong technical depth with excellent product judgement — someone who understands when to invest in long-term engineering foundations and when speed of execution matters most. This is a highly collaborative environment where engineering, product and delivery work closely together to solve complex business challenges.
Responsibilities
- Design, build, test, deploy and optimise production-grade digital systems
- Contribute to backend services, APIs and platform architecture
- Work closely with engineering leads to deliver against key product milestones
- Deploy and operate distributed systems across multi-cloud environments
- Build enterprise-grade integrations with third-party APIs and SDKs
- Implement authentication, authorisation and provisioning workflows
- Design secure access control, policy enforcement and audit capabilities
- Support AI/ML feature development, data workflows and visualisation where required
- Improve system scalability, reliability, observability and performance
Required Experience
We’re looking for a senior engineer with strong platform and backend expertise who can become productive quickly in complex technical environments.
Core Skills
- ~5+ years building and shipping production software
- ~ Strong full-stack engineering background in high-scale environments
- ~ Strong frontend capabilities with React, TypeScript and Next.js
- ~ Strong backend engineering expertise in Go
- ~ Ability to adapt quickly to new tools, systems and technical challenges
- ~ Strong systems design skills across resilience, scalability, performance and security
- ~ Strong engineering judgement and pragmatic decision-making
- ~ Excellent communication and collaboration skills
- ~ Experience with automated testing and engineering best practices
Cloud & Infrastructure
Strong experience in modern cloud and platform engineering, including several of the following:
- Multi-cloud deployments across GCP, AWS and Azure
- Kubernetes and container orchestration
- Infrastructure-as-code using Terraform
- Private networking and cloud security architecture
- Secrets management and encryption key management
- CI/CD pipelines using GitHub Actions
- Observability using OpenTelemetry (OTEL) and Grafana
- Workflow orchestration using Temporal
Highly Desirable:
- Experience with BYOC SaaS deployments and strong Azure/cloud infrastructure knowledge
- Enterprise Integrations: Experience with APIs, SDKs and enterprise identity tools such as OAuth2, SAML, OIDC and SCIM
- Security & Governance: Strong understanding of access controls, audit logging and compliance frameworks such as SOC 2 / ISO 27001
- AI / ML: Experience building AI-enabled products using Python, ML/NLP workflows, modern databases and frontier models such as Claude, OpenAI or Gemini
Senior Software Engineer - C# - (Hybrid Remote) employer: Immersum
Join a leading enterprise software business in London as a Senior Software Engineer, where you'll thrive in a dynamic hybrid work environment that fosters collaboration and innovation. With a strong focus on employee growth, you will have the opportunity to engage in cutting-edge AI/ML projects while working alongside talented professionals who are committed to delivering high-quality solutions. Enjoy competitive rates and the chance to make a significant impact from day one in a culture that values technical excellence and teamwork.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer - C# - (Hybrid Remote)
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Immersum or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Immersum.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Immersum.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Immersum that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Software Engineer - C# - (Hybrid Remote)
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Immersum.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Immersum and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Immersum
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Immersum uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
