> Markdown version of [/jobs/ext/2590675-mongodb-performance-engineer-mongodb-database-engineer](https://www.wearedevelopers.com/jobs/ext/2590675-mongodb-performance-engineer-mongodb-database-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# MongoDB Performance Engineer / MongoDB Database Engineer

- **Company:** Galaxy i Technologies, Inc
- **Location:** Austin, TX, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Amazon Elastic Compute Cloud, Databases, Shard (Database Architecture), Python (Programming Language), Log Analysis, MongoDB, Performance Tuning, Query Optimization, Ansible, Runbook, Database Engines, Scripting, Indexer, Kubernetes, Low Latency, Terraform
- **Published:** August 15, 2026
- **Apply:** https://www.dice.com/job-detail/72c5fd10-0415-4ec9-a8ba-e066a95b5a8f

## About the Role

Must Have Skills:

 1. Expert in MongoDB
 2. Strong experience in Performance tuning
 3. Fluent in the aggregation framework, indexing strategy, and read/write/read-concern semantics.
 4. Strong explain-plan and profiler-driven query optimization
 5. WiredTiger internals: cache, eviction, checkpoints, journal, compression, document-level concurrency.
 6. Replication and sharding operations at scale, including shard-key design trade-offs.
 7. Scripting for automation - Python
 8. Strong experience with tuning of specific clusters, queries, indexes and schemas
 9. Good experience designing sharding strategy and shard keys; plans resharding and zone strategy
 10. Strong experience operating and monitoring existing sharded clusters; runs balancer, fixes hot chunks

Nice To Have Skills:

 1. MongoDB certification
 2. Kubernetes operator experience for stateful MongoDB; Infrastructure-as-Code (Terraform/Ansible)., Skills: Digital : Mongo DB~Performance Engineering

## Description

MongoDB Performance Engineer to own the throughput, latency, scalability and operational reliability of MongoDB landscape. This is a hands-on database engineering role - not an application-developer role.
The engineer is accountable for making MongoDB fast, predictable and cost-efficient at scale.
Performance engineering (Primary)

 * Profile and optimize slow queries and aggregation pipelines using explain plans, the database profiler, and log analysis.
 * Design, review and rationalize indexes (compound, partial, wildcard, Time To Live (TTL), text, geospatial) applying the Equality, Sort, Range (ESR) rule; eliminate unused and redundant indexes that inflate write cost and cache pressure.
 * Tune the WiredTiger storage engine: internal cache sizing, eviction and checkpoint behavior, compression, and journaling, balanced against filesystem cache.

Operations & reliability

 * Operate and scale sharded clusters: balancer management, chunk/range distribution, jumbo-chunk remediation, and (on modern versions) resharding.
 * Own backup/restore and Point-In-Time Recovery (PITR) strategy, plus rolling upgrades and patching with zero or minimal downtime.
Infrastructure, OS & platform

 * Right-size EC2 instances and EBS volumes (Input/Output Operations Per Second (IOPS) and throughput provisioning); on Kubernetes, own StatefulSet storage class, resource requests/limits, anti-affinity, and cache sizing against container memory limits.

Partner with application teams on data modeling; review schema changes; publish standards, runbooks and capacity guidance.


## Related Videos

- [40 Minutes to Build a Serverless COVID-19 REST and GraphQL APIs](https://www.wearedevelopers.com/videos/208-40-minutes-to-build-a-serverless-covid-19-rest-and-graphql-apis)
- [Database Magic behind 40 Million operations/s](https://www.wearedevelopers.com/videos/748-database-magic-behind-40-million-operations-s)
- [Dev & Test in the Cloud? Deploy your cloud environments with Ansible & Terraform](https://www.wearedevelopers.com/videos/1607-dev-test-in-the-cloud-deploy-your-cloud-environments-with-ansible-terraform)
- [Technical Documentation - How Can I Write Them Better and Why Should I Care?](https://www.wearedevelopers.com/videos/681-technical-documentation-how-can-i-write-them-better-and-why-should-i-care)
- [Protector Of The Realm](https://www.wearedevelopers.com/videos/591-protector-of-the-realm)
- [NoSQL Data Modeling for Front-end Developers](https://www.wearedevelopers.com/videos/297-nosql-data-modeling-for-front-end-developers)

## Related Articles

- [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story)
- [Top Big Data Technologies That You Need to Know](https://www.wearedevelopers.com/magazine/108-top-big-data-technologies-that-you-need-to-know)
- [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)
- [20 Essential Tools For Backend Development](https://www.wearedevelopers.com/magazine/218-20-essential-tools-for-backend-development)
- [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)
- [7 Cloud Computing Trends Coming in 2025 for Developers](https://www.wearedevelopers.com/magazine/412-7-cloud-computing-trends-coming-in-2025-for-developers)