Senior Backend Engineer - Experimentation (Remote)

LaunchDarkly Group; Northern (KY); Hybrid; USD 134,000 - 224,000; Full time

Benefits offered by this job

RSUs

Health insurance

Vision insurance

Dental insurance

Mental health benefits

Job summary

LaunchDarkly is seeking a Senior Backend Engineer to join our Experimentation team. You will design and operate the services that power our experimentation platform, solving data-intensive problems with meaningful customer impact.

You will collaborate with product managers, data scientists, and engineers to build scalable backend services, improve observability, and contribute to architectural direction. This role offers responsibility from discovery to production, with on-call duties in a

Qualifications

• 6+ years of professional software engineering experience, including significant experience building and operating backend services in production.
• Fluency using AI tools in software engineering workflows, including the judgment to direct, evaluate, and validate AI-generated output.
• Experience designing and delivering customer-facing systems that are scalable, reliable, observable, and maintainable.
• Strong programming experience in Go or a comparable backend language such as Python, Rust, or C++. Our team is using Go.
• Experience with distributed systems, event-driven architectures, data pipelines, APIs, data modeling, or data-intensive services.
• Familiarity with analytical, operational, or warehouse data stores such as ClickHouse, Postgres, Snowflake, Redshift, BigQuery, Databricks, or equivalent technologies.
• Experience diagnosing production issues and improving system reliability through metrics, logs, traces, alerting, and other observability practices.
• Experience working in a cloud environment and with infrastructure-as-code or equivalent deployment and operations tooling.
• Ability to take an ambiguous problem from discovery and scoping through design, implementation, launch, and ongoing operation.
• Clear, thoughtful communication and a collaborative approach to working with technical and non-technical partners.
• Experience with experimentation, A/B testing, analytics, data platforms, or similarly data-intensive products.

Responsibilities

• Design, build, and operate scalable backend services and APIs that power LaunchDarkly’s Experimentation product.
• Own backend components across their lifecycle, including technical discovery, design, implementation, testing, deployment, monitoring, incident response, and continuous improvement.
• Build and evolve systems supporting experiment setup, event data ingestion, metric computation, results processing, and results presentation.
• Contribute to architectural decisions and technical proposals, making thoughtful trade-offs around scalability, reliability, performance, cost, and maintainability.
• Partner with product managers, designers, data scientists, and adjacent engineering teams to translate customer needs and product goals into reliable technical solutions.
• Collaborate with Data Platform, Warehouse Integrations, SDK, and other teams on shared data flows, services, and cross-team dependencies.
• Investigate complex production issues, identify root causes, and implement durable fixes.
• Improve observability, testing, deployment safety, operational processes, and the reliability of the systems you build.
• Participate in the team’s on-call rotation and take ownership of production systems in a you-build-it-you-run-it culture.
• Support teammates through thoughtful code reviews, design reviews, knowledge sharing, and informal mentorship.

Skills

Go

Python

Rust

C++

Tools

Distributed systems

Data pipelines

Event-driven architectures

Postgres

Job description

LaunchDarkly is seeking a Senior Backend Engineer to join our Experimentation team. You will design and operate the services that power our experimentation platform, solving data-intensive problems with meaningful customer impact.

You will collaborate with product managers, data scientists, and engineers to build scalable backend services, improve observability, and contribute to architectural direction. This role offers responsibility from discovery to production, with on-call duties in a