Sr. Software Development Engineer, AWS DMS

AWS Database Migration Service (DMS) has migrated more than 1.5 million database workloads to AWS helping enterprises move from commercial databases (Oracle SQL Server DB2) to open-source Amazon Aurora and RDS (PostgreSQL MySQL). The service is used by customers across the world to migrate their most important data from their on-premises datacenters to Amazon services. Our customers depend on our services reliability and security to handle their business data. More information on AWS DMS is available at a Senior SDE on the DMS team you will be a technical leader driving the architecture quality and delivery of database migration services used by tens of thousands of customers worldwide. Youll work across two tracks: stabilizing and improving the existing DMS replication engine (a large-scale C/C system) and contributing to the design and delivery of our next-generation migration service.

This role demands someone who can operate at multiple altitudes - diving deep into core dumps and memory corruption one day then leading a design review for a new migration architecture the next. Youll set technical direction for your area mentor engineers across experience levels influence the teams AI-powered engineering practices and make trade-off decisions that balance security compliance customer delivery and long-term product health. Youll own outcomes end-to-end: from design through deployment to production operations at scale.


AWS Database Migration Service (DMS) is a part of AWS Utility Computing (UC) which provides product innovations from foundational services such as Amazons Simple Storage Service (S3) and Amazon Elastic Compute Cloud (EC2) to consistently released new product innovations that continue to set AWSs services and features apart in the industry. As a member of the UC organization youll support the development and management of Compute Database Storage Internet of Things (Iot) Platform and Productivity Apps services in AWS including support for customers who require specialized security solutions for their cloud services.

Key job responsibilities
Lead the design and implementation of complex features and improvements in the DMS replication engine spanning C/C (current engine) and Java (next-generation service).
Drive technical strategy for one or more database endpoint areas (PostgreSQL Oracle SQL Server MySQL) making architecture decisions that improve reliability performance and security for the entire customer fleet.
Own and reduce systemic quality issues - task crashes memory corruption data validation failures - through root cause analysis systematic fixes and improved testing infrastructure.
Design and deliver security remediations within SLA including vulnerability fixes credential exposure prevention and secure dependency management.
Lead the design and expansion of automated test coverage including combinatorial testing that exercises millions of parameter combinations across heterogeneous migration paths.
Mentor SDE1s and SDE2s through code reviews design guidance and pairing on complex debugging. Raise the technical bar across the team.
Drive adoption of AI-powered engineering practices - autonomous bug detection AI-assisted debugging automated test generation - to multiply team effectiveness with constrained headcount.
Collaborate with Principal Engineers on long-term architecture decisions deprecation strategy and migration service evolution.
Participate in on-call rotation and lead incident response for complex production issues affecting customer migrations.
Influence release quality and cadence - contributing to a predictable deployment cycle serving a large production fleet.

A day in the life
You might start the morning leading a design review for a new CDC checkpointing mechanism that eliminates a class of data loss scenarios during failover. After the review you dive into a crash signature thats been affecting thousands of customer tasks - tracing it through AddressSanitizer output to a race condition in thread shutdown writing the fix and authoring an STP test that reproduces it under concurrent the afternoon youre mentoring a junior engineer through their first Oracle endpoint fix helping them navigate the codebase and understand the replication protocol. You end the day reviewing the architecture proposal for integrating a debugger into production instances providing feedback on the consent model and performance impact.



About the team
Our team is dedicated to supporting new members. We have a broad mix of experience levels and tenures and were building an environment that celebrates knowledge-sharing and mentorship. Our senior members enjoy one-on-one mentoring and thorough but kind code reviews. We care about your career growth and strive to assign projects that help our team members develop your engineering expertise so you feel empowered to take on more complex tasks in the future.

The DMS engine team operates across Dublin Poland and the US. Were a team that takes ownership of a complex system and makes it better every release -reducing crashes closing security gaps and making migrations reliable enough that customers dont need our help to succeed. We leverage AI extensively: from autonomous bug-fixing to an on-call agent that cuts troubleshooting time dramatically.

Diverse Experiences
AWS values diverse experiences. Even if you do not meet all of the qualifications and skills listed in the job description we encourage candidates to apply. If your career is just starting hasnt followed a traditional path or includes alternative experiences dont let it stop you from applying.

Why AWS
Amazon Web Services (AWS) is the worlds most comprehensive and broadly adopted cloud platform. We pioneered cloud computing and never stopped innovating thats why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses.

Inclusive Team Culture
AWS values curiosity and connection. Our employee-led and company-sponsored affinity groups promote inclusion and empower our people to take pride in what makes us unique. Our inclusion events foster stronger more collaborative teams. Our continual innovation is fueled by the bold ideas fresh perspectives and passionate voices our teams bring to everything we do.

Mentorship & Career Growth
Were continuously raising our performance bar as we strive to become Earths Best Employer. Thats why youll find endless knowledge-sharing mentorship and other career-advancing resources here to help you develop into a better-rounded professional.

Work/Life Balance
We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home which is why flexible work hours and arrangements are part of our culture. When we feel supported in the workplace and at home theres nothing we cant achieve.


- Experience programming with at least one modern language such as Java C or C# including object-oriented design
- Experience leading the architecture and design (architecture design patterns reliability and scaling) of new and current systems or experience in development in the last 3 years
- Experience as a mentor tech lead or leading an engineering team or experience leading engineering teams as a mentor or tech lead
- Experience building production software applications or understanding software development distributed systems and systems architecture
- Experience debugging profiling and implementing best software engineering practices in large-scale systems or experience with general troubleshooting/debugging of hardware

- Masters degree in computer science or equivalent
- Experience with full software development life cycle including coding standards code reviews source control management build processes testing and operations
- Experience with database replication technologies: CDC (Change Data Capture) logical replication log-based capture (LogMiner fndblog pgoutput)
- Experience with security vulnerability remediation in production systems
- Experience building automated test frameworks or improving test coverage for complex systems
- Experience with memory safety tooling (AddressSanitizer ThreadSanitizer Helgrind)
- Experience operating services at scale (multi-region deployments large customer fleets)
- Experience with release management and deployment pipelines for large fleets

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