Senior Full Stack Developer - C#/Azure /Kafka

Internal Title: Software Engineering Senior Consultant

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.

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

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.

C#

Microsoft Azure

Apache Kafka / event streaming

REST APIs and service integration

Event-driven architecture

Distributed systems

Full-stack software development

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

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.