ASP.NET Senior Developer

What You’ll Do

● Architect, develop, and optimize full-stack applications with modern web technologies.

● Lead the design and implementation of scalable microservices, APIs, and cloud-based solutions.

● Develop and maintain front-end applications using React, Angular, or Vue.js, ensuring a seamless user experience.

● Build robust backend services using Java, Node.js, or Python, integrating with databases and external systems.

● Drive best practices in software engineering, including code reviews, design patterns, and scalable architectures.

● Work with containerization (Docker, Kubernetes) and cloud platforms like AWS, GCP, or Azure.

● Optimize database performance with relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Cassandra)

solutions.

● Collaborate with cross-functional teams, including product managers, designers, and DevOps, to deliver high-quality

software.

● Mentor and guide junior engineers, fostering a culture of learning and innovation.

● Ensure high availability, security, and performance of applications through proactive monitoring and testing.

● Continuously improve CI/CD pipelines, development workflows, and automation strategies.

What You Need

● 5+ years of experience as a Full Stack Software Engineer, with a focus on scalable web applications.

● Strong proficiency in JavaScript/TypeScript and front-end frameworks (React, Angular, or Vue.js).

● Deep experience with backend development using Java, Node.js, Python, or Go.

● Expertise in building RESTful APIs, GraphQL, and event-driven architectures.

● Hands-on experience with cloud platforms (AWS, GCP, Azure) and serverless computing.

● Strong knowledge of containerization (Docker, Kubernetes) and infrastructure as code (Terraform, Ansible).

● Experience working with message queues (Kafka, RabbitMQ) and distributed systems.

● Familiarity with secure coding practices and software supply chain security principles.

● A track record of technical leadership in driving projects and mentoring engineers.

● Strong problem-solving skills and the ability to work in a remote-first, agile environment.

● A passion for open-source technologies and a drive to stay ahead of industry trends.

Why Join Us?

● Help secure the software supply chain for millions of developers worldwide.

● Build meaningful software in a collaborative, fast-moving environment with strong technical peers.

● Stay hands-on while leading—technical leadership is part of the job, not separate from it.

● Join a global engineering organization with deep local roots and a strong team culture.

● Competitive salary, great benefits, and opportunities for growth and innovation.

What you'll do :

• Work closely with product managers and engineers to design, implement, test, and continually improve scalable frontend and backend services.
• Develop products using agile methods and tools.
• Develop commercial-grade software that is user-friendly and suitable for a global audience.
• Plan, create, and execute (manual and automated) tests.
• Be involved and participate in the overall application lifecycle.
• Building reusable code and libraries for future use.
• Staying up to date with current technologies and providing insights on cutting-edge software approaches, architectures, and vendors.
• Ensure that non-functional requirements such as security, performance, maintainability, scalability, usability, and reliability are considered when architecting solutions.
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Skills you bring to the table:

• 3+ years of relevant experience. 
• Fluency in any one of JavaScript, TypeScript, or Python.
• Should have built large scalable enterprise applications from scratch.
• Strong experience in architectural patterns, High-level designs.
• Experience in NoSQL and SQL DBs.
• Have a knack for launching and iterating on products quickly with quality and efficiency.
• Strong problem-solving skills.
• Willingness to learn and ability to flourish in a dynamic, high-growth, entrepreneurial environment.
• Hands-on, self-starter, capable of working independently.
• True love for technology and what you do.
• Maniacal attention to detail.

Why Deliveroo?

When you first think about Deliveroo, you probably think of getting great food to your house in less than half an hour. Awesome right? But behind the scenes is the real story. This story is one of high growth, huge challenges and an enormous opportunity ahead of us. It began with our founder Will, arriving in London in 2004 and finding it almost impossible to order great food, despite the wealth of incredible restaurants in the city. In 2013 Deliveroo was launched. Fast forward to 2020 and we operate in 12 markets with over 60,000 riders who deliver orders from 60,000 restaurants in over 500 cities worldwide.

We want to be the definitive food company - the app you go to any time you have a hunger pang. We are transforming the way people think about food. We are providing people with limitless access to different cuisines and restaurants, turning cooking from a chore to a choice, and giving people the freedom to eat what they want, when they want, where they want it.

We work with riders, restaurants and consumers. We operate one of the most complex three sided marketplaces in the world and we do this in real time. Millions of customers and thousands of restaurants and riders rely on us to match them within milliseconds. The algorithms behind that marketplace are the secret sauce that allows us to deliver our orders in around 30 minutes.

And we're just getting started.

The scale of the opportunity ahead of us is immense. The global food market is valued at £7.7 trillion but only 1% of it is currently online. Contrast that with the digital disruption of countless other industries - from banking and travel to retail and communications - it's clear that our journey in the food sector has only just begun.

We are already a multi-billion pound company that has grown rapidly. Deliveroo came top in the FT's' list of Europe's fastest growing 1000 companies in 2018, and we were the first company ever to win Deloitte's 'UK Top 50' two years in a row. Yet most of the extraordinary value this company will generate lies ahead of us.

The Role

• Work as part of a full stack product team to develop solutions to ensure optimal experiences for our customers, riders, and restaurants

• Utilise a variety of backend technologies to build scalable products

• You'll take part in decisions related to how we undertake new projects

• You'll gather requirements and scope out projects with the rest of the team

Our skills include:

We want to emphasise that we don’t expect you to meet all of the below but would love you to have experience in some of these areas.

• Pride in readable, well-designed, well-tested software

• 5 to 10 years professional experience writing web-based applications in any language, and a willingness to quickly get up to speed on our stack (Ruby/Rails, Go, Python, Scala, or Rust)

• Experience with TDD environments (RSpec, Minitest, Capybara, Selenium)

• Experience with relational databases (PostGreSQL, MySQL) and key-value stores (Memcache, Redis)

• Experience with front-end web technology, bonus points for React

• Experience with web architecture at scale (20krpm and above)

• Experience with PostGIS, or any geography-heavy applications

• Experience with "NoSQL" data backends (Redis, MongoDB, ElasticSearch)

• Experience solving logistical problems with software

Life at Deliveroo

We are a growing team, with very large impact, seeking to answer some of the most interesting questions out there. We move fast, we’re always looking for new ideas and we’re very transparent about the decisions we make and why we make them.

There are so many questions we need to answer and plenty more we haven’t even encountered. How do data and technology help restaurants to grow as consumer habits change? How can we predict what someone wants to order for dinner long before the idea has even crossed their mind? At Deliveroo these are just some of the tough problems we are solving - and there is no challenge that cannot be yours. No solution is owned by a particular team, which means the scope for growth and personal impact is enormous.

Diversity

We believe a great workplace is one that represents the world we live in and how beautifully diverse it can be. That means we have no judgement when it comes to any one of the things that make you who you are - your gender, race, sexuality, religion or a secret aversion to coriander. All you need is a passion for (most) food and a desire to be part of one of the fastest growing start-ups around.