Backend Engineer (Infra), Core Sending
New
Spain; Fully remote work within Americas or European time zones., Americas or European time zonesFull-TimeSenior
Salary150,000 - 170,000 USD per year
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Job Details
- Languages
- English
- Experience
- 8+ years
- Required Skills
- AWSPostgreSQLKafkaTypeScriptClickhouseGoTerraformDatadog
Requirements
- 8+ years of backend engineering experience with a strong focus on cloud infrastructure and distributed systems.
- Proven experience designing and operating large-scale systems on AWS or similar cloud platforms.
- Strong expertise in event-driven architectures using tools such as Kafka, SQS, SNS, or equivalent technologies.
- Deep understanding of scalable system design, high availability, and performance optimization.
- Experience working with high-throughput systems and production-grade backend services.
- Strong programming skills in backend languages, ideally TypeScript and/or Go.
- Ability to work autonomously in ambiguous, fast-moving environments with a “default to action” mindset.
- Strong communication skills in English and ability to collaborate effectively across distributed teams.
- Comfortable participating in on-call rotations and handling production incidents.
- Low-ego, hands-on engineer with strong ownership and problem-solving mindset.
- Experience with email infrastructure or messaging systems is a plus.
Responsibilities
- Design and evolve the architecture supporting millions of daily API requests and large-scale email delivery workloads.
- Build and scale backend infrastructure capable of processing tens of millions of emails per day with high availability.
- Develop and optimize distributed systems, including asynchronous pipelines (queues, streams, retries, idempotency, DLQs).
- Improve system reliability through high availability design, disaster recovery planning, and fault tolerance strategies.
- Manage and scale data systems such as Postgres and ClickHouse to ensure performance and reliability under heavy load.
- Enhance observability using monitoring and alerting tools (e.g., Datadog) to ensure system health and performance.
- Develop Infrastructure as Code (IaC) solutions using tools such as Terraform and CDK.
- Work with TypeScript and Go to build and maintain core backend services.
- Participate in on-call rotations to support and resolve critical production issues.
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