Appvia
Senior Full Stack Developer - C#/Azure /Kafka

How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Senior Full Stack Developer - C#/Azure/Kafka
Internal Title: Software Engineering Senior Consultant
Location: London, UK (Hybrid - typically 1-2 days per week in office/client site)
Contract: 6-month rolling contract
Rate: £600-650 per day, Outside IR35
Start: ASAP
About Appvia
Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery.
Our software engineering capability focuses on modern application development, cloud-native architecture, event-driven systems, and improving delivery outcomes through better engineering practices.
We work across complex, high-impact environments in both the public and private sector, delivering solutions where quality, scalability, reliability, and security are critical.
About The Role
We're looking for a Senior Full Stack Developer to join Appvia on a new event-driven engineering engagement within a large-scale energy trading environment.
You'll be part of a small engineering team building a new event-streaming capability alongside an established data platform organisation. The focus will be on designing and building event adapters and supporting services in C# on Azure, connecting source systems and trading data into a Kafka-based event streaming platform.
This is a hands-on role for an experienced engineer who can operate with a high degree of autonomy. You'll be working across the service and integration layer, solving complex engineering problems where resilience, performance and low latency are particularly important.
You'll have the opportunity to help establish a new capability from the ground up, while working within the engineering standards and practices of a much larger data platform.
The initial engagement is 6 months with a view to extend, and one of the positions is available for an immediate start.
Interview Process - 3 Stage
- Discovery conversation with Talent Acquisition
- Technical Interview with Engineering Team
- Final Interview with Leadership
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Requirements
About You
You're a strong commercial full-stack engineer who enjoys getting into the detail of how systems communicate, integrate and operate at scale.
You'll bring:
- Strong commercial software engineering experience, with C# as your primary language
- Hands-on experience building services, integrations or adapters between systems
- Strong experience developing cloud-native applications on Microsoft Azure
- Experience with Apache Kafka or comparable event-driven / event-streaming technologies
- Good understanding of APIs, service integration and distributed systems
- Experience building resilient, reliable services for business-critical environments
- Ability to work autonomously and make sound engineering decisions with limited oversight
- Strong communication skills and the ability to collaborate effectively within a small engineering team
- A pragmatic approach to engineering, with a focus on delivering robust solutions rather than unnecessary complexity
Experience working within energy trading, financial services, trading platforms or other highly time-sensitive environments would be particularly valuable.
Responsibilities
- Design, build and maintain event adapters and supporting services connecting source systems to an event streaming platform
- Develop production-quality applications and services using C# and Azure
- Build integration logic across APIs, services, data sources and event streams
- Develop solutions that are resilient and performant for time-sensitive data
- Work with Kafka producers, consumers and event-driven architectures
- Collaborate closely with the wider data platform engineering organisation
- Help establish engineering patterns and practices for a new event-driven capability
- Troubleshoot and resolve complex technical issues across application and integration layers
- Make pragmatic architectural and engineering decisions within a fast-moving environment
- Contribute to a high-quality, collaborative engineering culture


Get help with your application
Your very own career expert that helps elevate your application to the next level.
Technical Skills
Core technologies:
- C#
- Microsoft Azure
- Apache Kafka / event streaming
- REST APIs and service integration
- Event-driven architecture
- Distributed systems
- Full-stack software development
Nice to have:
- Energy trading / financial services experience
- Trading platforms or market/exchange data
- Experience working with low-latency or time-sensitive data
- Azure data platform technologies
- Experience establishing new engineering capabilities or teams
Benefits
Why Join Appvia?
We are a self-funded, London based startup; providing businesses with a fast and secure way to deploy containerised applications into the cloud.
We are on a mission to enable organisations to make cloud-based software delivery simple and efficient, whilst having the insights into costs, security and cadence. As a company that holds customers at the heart of everything we do, we are looking for candidates who want to make a real change to how Dev and Ops is working in the industry.
With us our customers, like the UK's Home Office & Bank of England, are harnessing cloud-native technologies, limiting the challenges of infrastructure management and rapidly delivering digital products.
- Short, focused engagement with clear deliverables
- Opportunity to work on modern cloud platforms
- Fully remote and flexible
- Fast interview process and quick start
But don't just take our word for it, you can check out what our Appvians say about us on Glassdoor and by following us on LinkedIn, Twitter and TikTok.
We are proud to be an equal opportunities employer and actively encourage, respect, and recognise diversity of thought and background throughout the business. All applicants will be considered for employment without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, or veteran, neurodiversity, and disability status.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Skills
Location