System Development Engineer, AWS Networking

System Development Engineer, AWS Networking Overview

This role sits within AWS networking and focuses on the software, services, and internal tooling that keep one of the world’s largest cloud networks running. Rather than simply using cloud infrastructure, the position is for an engineer who helps build and improve the systems behind it. The work is centered on supporting network engineers by developing, operating, fixing, and continuously reinventing the software components they depend on to automate the network and maintain reliable operations.

The environment is described as fast-moving and highly collaborative, with the feel of a startup but the scale and impact of a global cloud platform. The team works in an Agile way and values engineers who are motivated, curious, and eager to solve difficult operational and technical problems. Internal customers for this role are the network engineering teams, and the job involves close partnership with them to share ideas, improve tools, and strengthen the overall operation of the AWS network.

What you will do

• Take ownership of the services your team runs and improve them across their full lifecycle, from design and implementation through deployment and ongoing support.
• Diagnose problems in production systems, identify the real underlying cause, and deliver long-term fixes that prevent the same issue from recurring.
• Improve testing, observability, and validation across services, tools, and infrastructure so new versions can be released with minimal disruption.
• Build automation and internal tools that reduce manual operational effort and make network operations more efficient for multiple teams.
• Design and implement new software capabilities, products, or services that improve operational efficiency and help solve network engineering challenges.
• Investigate complex technical and business problems in a global organization and turn those investigations into practical engineering changes.
• Work closely with network engineers as your internal stakeholders, supporting their goals through software and tooling improvements.
• Contribute to the ongoing operation, monitoring, and assurance of the AWS network across large regions through the Systems Development team’s platforms and services.
• Make sensible engineering trade-offs that balance immediate needs with future scalability and maintainability.
• Help drive innovation in the software and tooling used to operate AWS networking at scale.

Team context

The Systems Development team owns the software services and platforms that build, operate, monitor, and assure the AWS network across entire regions. The team’s mission is to create automation and new software solutions that improve operational efficiency for network engineering customers. The work is positioned at the center of AWS’s large-scale network infrastructure, where complex operational challenges are turned into scalable systems that improve reliability and efficiency.

Joining this team means working alongside highly experienced networking and software professionals, with opportunities to learn from them and contribute to major programs that have significant impact. The role offers broad technical exposure and the chance to help define, build, and run services in a high-growth setting with substantial ownership.

Why this role is attractive

• Learn from some of the strongest networking experts in the field.
• Build and operate networks at very large scale.
• Work in an organization that values engineering ownership and innovation.
• Contribute to unique and high-profile programs.
• Gain access to a wide variety of technologies and expand your technical breadth.
• Receive regular 1:1 coaching and mentorship from experienced network and software engineers.
• Work on high-impact projects with the chance to influence rapidly growing products.
• Enjoy a high degree of autonomy while helping run services in a fast-growing environment.
• Build a career within a large, successful technology company with extensive opportunities to grow.

Required experience and skills

• Practical programming ability in at least one modern language such as Python, Ruby, Golang, Java, C++, C#, or Rust.
• Experience in software development, systems engineering, site reliability engineering, or DevOps.
• Knowledge of best practices across the software development lifecycle, including coding standards, code review, source control, build systems, testing, and operational practices.
• Understanding of networking fundamentals such as DNS, DHCP, TCP/IP, routing, switching, and HTTP.
• Understanding of systems engineering fundamentals, including host networking, storage, and Linux operating systems.
• Ability to investigate technical issues thoroughly and perform root cause analysis.
• Capability to improve automation, monitoring, and validation in production environments.
• Comfort working collaboratively in an Agile environment with advanced tools and experienced colleagues.
• Strong motivation and enthusiasm for building and improving the systems that power cloud networking.

Preferred background

• Experience designing, developing, or operating cloud services on AWS or another cloud platform.
• Experience working with Python.

Additional information

The role is listed for Amazon’s AWS EMEA SARL (UK Branch) and the job details indicate locations in London and Thames Valley, UK. The posting does not specify a remote, hybrid, or fully onsite arrangement.

Amazon states that it is an equal opportunities employer and makes hiring decisions based on experience and skills. The company also notes its commitment to diversity, privacy, and inclusive hiring practices. If a candidate needs a disability-related accommodation or adjustment during the application, interview, or onboarding process, Amazon directs applicants to its accommodations information and asks candidates in countries or regions not listed to contact their recruiting partner.

To apply, candidates should use the “Apply now” option on the job posting.

Degree Requirement: Not Specified

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