Senior Full Stack Developer

StructureIt is a growing software consultancy in the capital markets, with offices in the UK, South Africa, Mauritius, India and New Zealand. We are trusted partners that help our customers in the Commercial Real Estate and Credit Markets leverage technology to unlock value throughout their business. Our mission is to deliver high-quality and robust software that quickly solves customer pain points while keeping them in control throughout the engagement.
Main focus of the role
We are looking for a self-starting Senior Full Stack Engineer with deep experience in C# and .NET, and in Angular or React. You lead the design and delivery of complex systems and features, and you set the technical approach that other engineers build on. The role is client-facing. You take a client requirement and turn it into software that is secure, maintainable and fit for the business it serves.
The role is based in South Africa, in Johannesburg, Cape Town or remote. You will report to a Technical People Lead and work with distributed teams in London, New Zealand, India and the US. Expect to work on more than one engagement, and expect the mix to change as our client work changes.
You will also use AI every day. Our engineers use AI coding tools such as Claude Code to design, write, test and review code. We work within an approved toolset, and you stay accountable for every line that carries your name. We expect you to arrive able to do this well, to review AI-generated code at least as hard as your own, and to know when human judgement must lead.
What you’ll do
The work falls into five areas. The first three take most of your time.
Design the system
Lead the design of complex systems and features, and define the technical approach for the team
Select and justify the tools, languages and frameworks for each project
Design systems with clear boundaries, consistent patterns and good documentation, so that people and AI tools can extend them safely
Lead schema and data model design, and choose the database technology that fits the problem
Document architecture for technical and non-technical readers
Build across the stack
Lead service-oriented backend design in C# and .NET, including API versioning, distributed systems patterns and secure-by-design architecture
Architect complex front ends in Angular or React, and hold the team to accessibility and performance standards
Use AI tools to design, write, test and review code, and treat prompt design as a core technical skill
Review AI-assisted code for maintainability, security, architectural fit and domain accuracy, and challenge output you do not fully understand
Lead the migration of legacy applications to modern technologies and infrastructure
Ship it safely
Design and maintain CI/CD pipelines with quality gates, contract testing and rollout strategies such as feature flags and blue-green deployment
Define test strategies across components, so that automated tests stay reliable, fast and meaningful
Design cloud infrastructure that is secure, scalable, compliant and cost-effective
Define SLOs and SLIs, and use distributed tracing and telemetry to diagnose system-wide issues
Work with the client
Lead technical conversations with clients and stakeholders, and explain trade-offs at the right level of detail
Work with analysts, product owners and project managers to shape scope and delivery phases based on technical feasibility
Break complex problems into small, well-defined tickets with clear outcomes, dependencies and decision context
Know when to move fast with AI and when to slow down for critical logic, security, compliance or domain-sensitive work
Help others grow
Mentor engineers across experience levels through pairing, code review and feedback they can act on
Coach others on safe and effective AI use, including prompt quality, output validation and debugging AI-assisted code
Help define and enforce team standards for AI use, covering review, documentation, traceability and quality thresholds
Add reusable prompts, workflows and patterns to our Skills Library, so that knowledge does not sit with one person
To fly in your role, you’ll need
A minimum of seven years working experience as a software engineer
Extensive commercial experience in C# and .NET
Production experience with Angular or React
At least one system you designed, shipped and supported in production, that you can talk through in detail at interview
Experience in client-facing delivery, where the client sets the priorities and you explain the trade-offs
Hands-on experience with at least one major cloud platform, and with Linux, containers and infrastructure as code
Excellent written and spoken communication
Comfortable in an Agile delivery team
The discipline to manage your own time and stay in close contact with a team spread across time zones
Daily working experience with an AI coding tool such as Claude Code, and examples of where it helped you and where it was wrong
Willingness to work in an agentic delivery model, where parts of the development workflow are automated
Experience in financial services is a strong advantage, and Commercial Real Estate or Credit Markets experience even more so
The confidence to tell a client something they do not want to hear, early
We assess candidates against our Senior Developer role expectations. These cover software development, the delivery lifecycle, code quality and testing, databases, DevOps and deployment, initiative and accountability, communication and collaboration, and leadership and mentorship. Our full stack expectations add frontend and backend engineering, integration and quality, and system thinking.
Benefits
Working

Employment type
Full-Time

Work arrangement
Yes