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Back End Developer

Back End Developer

LaunchDarkly

0 years

0 Lacs

India

Posted:1 month ago| Platform:

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Skills Required

developer postgresql http sql code relational data design indexes migrate writing debugging query api rest json integration test testcontainers github docker metrics logging collaboration react model ui power reliability database kafka orchestration kubernetes terraform migration swagger pagination

Work Mode

On-site

Job Type

Full Time

Job Description

Back-End Engineer – Go + PostgreSQL (Contract) Core Skills (“Must-Have”) Golang expertise Idiomatic Go 1.21+, goroutines / channels, std-lib HTTP & sql packages, context-aware code Relational-data mastery Hands-on with PostgreSQL 13+ — schema design, indexes, migrations (Flyway, Goose, or pg-migrate) Comfortable writing performant SQL and debugging query plans API craftsmanship Design and version REST/JSON (or gRPC) endpoints; enforce contract tests and backward compatibility Quality & Dev-Ops hygiene Unit + integration tests (Go test / Testcontainers), GitHub Actions or similar CI, Docker-ised local setup Observability hooks (Prometheus metrics, structured logging, Sentry) Collaboration fluency Pair daily with React front-end & designers; discuss payloads, edge cases, and rollout plans up front Day-to-Day Responsibilities Ship incremental data-model and API updates — e.g., add a column with default values, write safe up/down migrations, expose the field in existing endpoints, and coordinate UI changes Design small new features such as derived “metric-health” tables or aggregated views that power dashboards Guard performance & reliability — run load tests, add indexes, set query timeouts, and handle graceful fallbacks behind feature flags Keep codebase clean — review PRs, refactor shared helpers, and prune dead code as product evolves Nice-to-Have Extras Production experience with a feature-flag SDK (LaunchDarkly, Split, etc.) to stage database changes safely Familiarity with event streaming (Kafka / NATS) or background job runners (Go workers, Sidekiq-like queues) Exposure to container orchestration (Kubernetes, ECS) and infrastructure-as-code (Terraform, Pulumi) Sample Mini-Projects You Might Tackle Scenario: Add property to existing entity Write migration to add source_type column to metrics, backfill with default, update GET/POST /metrics handlers & swagger docs, unit-test both happy & error paths Scenario: New aggregated view Create new table metric_health that rolls up pass/fail counts per metric, expose /metrics/{id}/health endpoint returning red/amber/green status with pagination, instrument with Prometheus counters Show more Show less

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Back End Developer