Lorien
Senior Software Engineer
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Senior Software Engineer (AWS) | Senior Cloud Engineer
Full Time - London - Hybrid - Two days a week on site
Up to £93k with a 15% bonus.
Overview
We're looking for a Senior Software Engineer to join a growing engineering team, focused on designing, building, and supporting cloud-native solutions on AWS.
This role is ideal for a strong Senior Individual Contributor who enjoys owning technical delivery end-to-end, working closely with stakeholders, and driving solutions from concept through to production.
The successful candidate will operate as the primary engineering presence in the UK time zone, making strong communication, ownership, and accountability essential.
While software engineering experience is important, the specific language or runtime is less critical than deep AWS knowledge, Infrastructure as Code experience, and the ability to operate independently.
Responsibilities
- Design, build, and support cloud-native applications and services on AWS
- Own technical delivery from discovery and solution design through implementation, deployment, and ongoing support
- Work closely with Product Owners, Business Analysts, Architects, and Engineering teams to shape solutions and refine requirements
- Contribute to architectural decisions across distributed and event-driven systems
- Build and maintain Infrastructure as Code using AWS CDK and other IaC tools
- Improve system reliability, scalability, observability, and operational efficiency
- Act as a trusted technical partner for stakeholders during UK business hours
- Support production systems, incident response, and continuous improvement activities
- Mentor engineers through technical guidance and best-practice sharing
- Drive pragmatic solutions that balance business needs and technical excellence
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Essential Skills & Experience
AWS Expertise
- Strong hands-on experience with AWS services such as:
- Lambda
- API Gateway
- Event Bridge
- SQS
- SNS
- Dynamo DB
- CloudWatch
- IAM
- Step Functions
- ECS / Fargate
Infrastructure as Code
- AWS CDK (highly desirable)
- Terraform
- Cloud Formation
- Infrastructure automation and deployment pipelines
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Cloud-Native Engineering
- Distributed systems
- Event-driven architectures
- Microservices
- API design and integrations
- Monitoring and observability
- Resilience and fault tolerance
Engineering & Delivery
- Experience delivering production systems end-to end
- Strong ownership mindset
- Experience operating as a Senior Individual Contributor
- Agile delivery experience
What We're Looking For
We're particularly interested in engineers who can demonstrate:
- Ownership and accountability for technical delivery
- AWS CDK experience
- Confidence working directly with stakeholders
- The ability to influence technical decisions without formal management responsibility
Nice to Have
- Financial Services, Insurance, or other regulated industry experience
- Experience with AI-assisted engineering tools
- Experience with Amazon Bedrock, MCP, or modern AI platforms
- Experience leading cloud migrations or platform modernization initiatives
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