Senior Full Stack Software Engineer – .NET Core / Azure / Payments
SwiiprUnited Kingdom17 hours ago
Full-timeEngineering, Information Technology
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Are you ready to shape the future of fintech in travel?
Join us at Swiipr, where we’re redefining how airlines handle disruption and delivering exceptional digital payment experiences to passengers worldwide.
We’re scaling fast, and we’re looking for a Senior Full Stack Software Engineer who thrives in dynamic environments — someone creative, curious, and commercially minded. You’ll help us design, build, and launch world-first payment products, solving complex problems and delivering seamless customer journeys for passengers around the globe.
Why Swiipr?
At Swiipr, we’re revolutionising the way airlines issue real-time digital compensation to passengers. Our secure, API-led platform simplifies complex payment operations, reduces friction, and elevates customer experience — trusted by global carriers around the world.
With several world-first innovations already delivered, we’re continuing to push the boundaries of mobile payments and digital customer experience. As we expand, we’re looking for a disruptive, problem-solving engineer who can turn ideas into scalable products, integrating with partners and pushing new technology frontiers.
As a rapidly growing fintech, we combine cutting-edge technology with a collaborative culture where ideas are encouraged, ownership is expected, and innovation is rewarded.
Your Role
As a Senior Full Stack Software Engineer, you’ll design, develop, and maintain enterprise-grade services and applications using .NET Core (C#), Azure, and payment technologies.
You’ll work across the full technology stack — from backend microservices and APIs to front-end integration and cloud infrastructure — ensuring performance, scalability, and security at every layer, contributing to new product development and helping bring innovative payment experiences to market in collaboration with our partners and clients. This role demands creative thinking, strong technical leadership, and the ability to translate bold ideas into reliable, real-world systems.
Reporting to our CTO and working closely with our CEO, you will play a key leadership role in shaping Swiipr’s technical direction, product innovation, culture, and success over the coming years.
Key Responsibilities
You’ll be joining a high-growth fintech backed by leading investors and working with some of the biggest names in global aviation.
We’re looking for someone who wants to grow with us — a key senior leader who will help shape the future of the business as we continue to scale globally.
In addition to a competitive base salary, share options form a significant part of the package as we look to materially reward key long-term senior leaders to help build our transformative tech and cutting edge payments innovation
We offer excellent long term earning potential, career progression, and the chance to be an integral part of our journey to redefine travel payments worldwide.
A note to recruitment agencies - we have this role covered at the moment; we politely request you do not make unsolicited calls or applications.
Join us at Swiipr, where we’re redefining how airlines handle disruption and delivering exceptional digital payment experiences to passengers worldwide.
We’re scaling fast, and we’re looking for a Senior Full Stack Software Engineer who thrives in dynamic environments — someone creative, curious, and commercially minded. You’ll help us design, build, and launch world-first payment products, solving complex problems and delivering seamless customer journeys for passengers around the globe.
Why Swiipr?
At Swiipr, we’re revolutionising the way airlines issue real-time digital compensation to passengers. Our secure, API-led platform simplifies complex payment operations, reduces friction, and elevates customer experience — trusted by global carriers around the world.
With several world-first innovations already delivered, we’re continuing to push the boundaries of mobile payments and digital customer experience. As we expand, we’re looking for a disruptive, problem-solving engineer who can turn ideas into scalable products, integrating with partners and pushing new technology frontiers.
As a rapidly growing fintech, we combine cutting-edge technology with a collaborative culture where ideas are encouraged, ownership is expected, and innovation is rewarded.
Your Role
As a Senior Full Stack Software Engineer, you’ll design, develop, and maintain enterprise-grade services and applications using .NET Core (C#), Azure, and payment technologies.
You’ll work across the full technology stack — from backend microservices and APIs to front-end integration and cloud infrastructure — ensuring performance, scalability, and security at every layer, contributing to new product development and helping bring innovative payment experiences to market in collaboration with our partners and clients. This role demands creative thinking, strong technical leadership, and the ability to translate bold ideas into reliable, real-world systems.
Reporting to our CTO and working closely with our CEO, you will play a key leadership role in shaping Swiipr’s technical direction, product innovation, culture, and success over the coming years.
Key Responsibilities
- Design, develop, and maintain cloud-native .NET Core microservices and enterprise applications.
- Critical problem solving, ideation and building of new products, features and payments solutions.
- Build API-first services integrating with payment processors, banking partners, and airline systems.
- Optimise and secure databases (Azure SQL) for performance and reliability.
- Implement and manage messaging patterns with Azure Service Bus.
- Lead and mentor developers, manage sprints, and participate in peer reviews.
- Collaborate across teams to deliver secure, compliant, high-performing solutions.
- Contribute to CI/CD pipelines and infrastructure automation using Azure DevOps.
- Troubleshoot and resolve production issues with a focus on root cause analysis.
- 7+ years of software engineering experience, including 3+ in senior or full-stack roles.
- Strong proficiency in .NET Core (C#) and Microsoft Azure.
- Proven experience integrating mobile payments or financial APIs.
- Solid database design and SQL optimisation skills.
- Experience with messaging, event-driven architectures, and asynchronous patterns.
- Knowledge of authentication and secure coding best practices (OAuth2, JWT)
- Hands on, sleeves rolled up, burning desire to solve problems and see projects/products through lifecycle to live.
- Experience managing or mentoring engineering teams.
- Familiarity with Azure DevOps and CI/CD pipelines.
- Excellent communication and problem-solving skills.
- Knowledge of Airline payments software or integrations
- Experience with front-end frameworks (Angular, React, or Vue.js).
- Knowledge of Onion/Clean Architecture patterns.
- Exposure to Kubernetes or containerised deployments.
- Experience with airline or travel technology platforms.
- Understanding of automated testing frameworks and performance tuning.
You’ll be joining a high-growth fintech backed by leading investors and working with some of the biggest names in global aviation.
We’re looking for someone who wants to grow with us — a key senior leader who will help shape the future of the business as we continue to scale globally.
In addition to a competitive base salary, share options form a significant part of the package as we look to materially reward key long-term senior leaders to help build our transformative tech and cutting edge payments innovation
We offer excellent long term earning potential, career progression, and the chance to be an integral part of our journey to redefine travel payments worldwide.
A note to recruitment agencies - we have this role covered at the moment; we politely request you do not make unsolicited calls or applications.
Key Skills
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