Platforms
MongoDB CommunityMongoDB EnterpriseMongoDB AtlasPercona Server for MongoDB
Databases and search · screened by AceMQ
Hire MongoDB developers vetted by a MongoDB practitioner
Conntal places MongoDB developers and NoSQL engineers who understand replica-set failover and write concern, not just document modelling. Every candidate is screened by an AceMQ practitioner who supports production MongoDB, using a real failover scenario. Available on contract, contract-to-hire or direct hire, onshore, nearshore or offshore.
Indicative rate: from $80/hr nearshore or offshore and $120/hr onshore. See what moves it.
Contract, contract-to-hire or direct · onshore, nearshore, offshore · reviewed 31 October 2026
- Screen owner
- Data and search platform lead · AceMQProduction support for Elasticsearch.
- Titles we place
- MongoDB developer · MongoDB engineer · MongoDB DBA · NoSQL engineer · Database engineer
- Platforms we screen on
- MongoDB CommunityMongoDB EnterpriseMongoDB AtlasPercona Server for MongoDB
Rates
What a contract MongoDB developer costs
Senior contract MongoDB developer rates start at $80/hr nearshore or offshore and $120/hr onshore. These are indicative from-rates, last reviewed 31 October 2026.
| Location model | From (USD per hour) | Where engineers are based |
|---|---|---|
| OnshoreHighest rate | $120/hr | US-based, on client time zones, cleared where the engagement requires it. |
| NearshoreOur default recommendation | $80/hr | Latin America and Canada, four hours or less of overlap loss, same working day. |
| OffshoreLowest rate | $80/hr | Europe, India and South East Asia. |
What moves the number
- Platform scarcity. The fewer engineers who have run MongoDB in production, the higher the rate.
- Seniority. The figures are for senior engineers; staff and principal levels cost more.
- Clearance and residency. Cleared or on-site work narrows the pool and sits in the onshore column.
- Term. Length, hours and the engagement model change the rate; contract-to-hire and direct placement are priced differently.
Indicative from-rates for senior contract engineers, USD per hour. The final rate depends on platform scarcity, seniority, clearance and term.
The screen
How we vet MongoDB developers: the published screen
Every MongoDB developer is screened on the scenario below by the Data and search platform lead at AceMQ. The senior and mid answers are published so you can judge our bar before you engage us, and candidates know what they are walking into.
The screen · MongoDB developer
Conntal Vetting Standard
Scenario put to the candidate
During peak traffic the primary of a replica set steps down. The application sees write errors for about twenty seconds and then recovers, but some writes that were acknowledged before the failover are missing afterwards. Explain what happened.
Vetted by
Data and search platform lead · AceMQ
A senior answer contains
- Asks about the write concern first, knowing writes acknowledged at w:1 can be rolled back after a failover.
- Recommends majority write concern for data that must survive an election, and explains the latency it costs.
- Checks whether retryable writes are enabled, which explains why the application recovered on its own.
- Looks for rollback data on the former primary rather than assuming the writes are simply gone.
Where a mid answer stops
- Blames the network and raises the client timeouts.
- Treats the missing writes as an application bug without asking about write concern.
- Suggests adding a replica to prevent elections.
What we screen on
MongoDB skills we screen for
MongoDB candidates are screened on platforms, topology and durability, among others, against the stack you actually run rather than a generic checklist.
Topology
replica setsshardingelectionsread preference
Durability
write concernread concernretryable writestransactions
Performance
indexingaggregation pipelineWiredTigerquery profiling
Other NoSQL
CassandraRedisDynamoDB
Titles this covers
MongoDB job titles we place
We place 5 titles in this area, from MongoDB developer to Database engineer. They overlap and are used inconsistently between companies, so tell us the outcome you need and we will tell you which title actually fits it.
- MongoDB developer
- MongoDB engineer
- MongoDB DBA
- NoSQL engineer
- Database engineer
The platforms, run in production by our network
- AceMQ MongoDB consulting and support
- OSSEVA MongoDB extended support
- OSSEVA Open-source end-of-life tracker
- AceMQ End-of-life support
Engagement
Ways to hire MongoDB developers
Platform work usually starts with a defined piece of change and becomes ongoing ownership, which is why most MongoDB developers engagements begin on contract. All three models are available, in any location model.
Contract
A vetted engineer embedded in your team for a defined term.
Hourly, billed against an approved SOW. Most common for migrations, upgrades and capacity surges where the work has an end date.
Contract staffingContract-to-hire
Work together first, convert when it is obviously working.
A defined conversion window and a pre-agreed fee, so the decision to hire is a business decision rather than a negotiation.
Contract-to-hire staffingDirect placement
A permanent hire, screened to the same standard.
One-time fee against first-year base. Used where the role is a long-term platform owner rather than project capacity.
Direct placement staffingNot a fit if
When to look elsewhere for MongoDB developers
We are the wrong choice if any of these describe your role, and we would rather say so on the first call.
- You need schema design for a new application with no production operations.
- You want MongoDB supported rather than staffed; AceMQ provides support directly.
- The role is relational database work; see the PostgreSQL DBA page.
How it works
How hiring MongoDB developers through Conntal works
- 01
Scope
A practitioner scopes the role
An engineer who runs this technology reads your brief and tells you what is missing from it. Most briefs we receive ask for the wrong seniority or the wrong title. - 02
Screen
We screen, then shortlist
Sourcing is ours; the technical decision belongs to the vetting practitioner. You only see candidates who passed the scenario on this page. - 03
Start
Start, convert or replace
Contract, contract-to-hire or direct. If the fit is wrong we say so first and replace rather than defend the placement.
Screen owner
Who vets our MongoDB developers: Data and search platform lead, AceMQ
Production support for Elasticsearch, OpenSearch, MongoDB, PostgreSQL, Cassandra, Snowflake, Databricks, Spark, Flink, NiFi and Airflow estates under AceMQ's 24/7 support practice.
FAQ
MongoDB developers: what buyers ask
Something not covered here? Send the requirement and a practitioner answers it, not a sales queue.
How much does a contract MongoDB developer cost per hour?
Indicative senior contract from-rates are $80/hr nearshore or offshore and $120/hr onshore (USD, reviewed 31 October 2026). The final rate depends on platform scarcity, seniority, clearance and term. Contract-to-hire and direct placement are priced differently, and the delivery models page sets out how.
How fast can a MongoDB developer start?
We do not promise a start date before we have seen the brief. A practitioner reads it, usually within one business day, and tells you whether we can staff it. Timing after that depends on the stack, the seniority and the location model.
Do you staff NoSQL engineers beyond MongoDB?
Yes. Cassandra, Redis and DynamoDB are common alongside MongoDB. If a role spans several stores, each is screened separately.
Can you staff a MongoDB upgrade or end-of-life migration?
Yes. Moving off an unsupported MongoDB version is a common bounded contract. If you need the old version supported meanwhile, AceMQ and OSSEVA cover that directly.
Do your MongoDB developers know Atlas?
Yes. Atlas removes hosting but not schema design, indexing or write-concern decisions, which is where most production problems start.
Who vets your MongoDB engineers?
An AceMQ practitioner who supports production MongoDB, using the replica-set failover scenario on this page.
Can we convert a contractor to full time, and what does it cost?
Yes. Contract-to-hire sets a conversion window and a pre-agreed fee at the start, so converting is a business decision rather than a negotiation. The fee is agreed per engagement; ask for it with your brief.
What if the placement does not work out?
If the fit is wrong we say so first and replace the engineer rather than defend the placement. Replacement terms are agreed per engagement, so ask for them with your brief.
Do you also deliver MongoDB consulting or support?
Not through Conntal. We place individual engineers into your team on contract, contract-to-hire or direct hire. If you want a project delivered or the platform supported as a service, AceMQ does that directly at acemq.com.
Related
Related roles
Need MongoDB delivered as a project or supported as a service instead of staffed? AceMQ does that directly.
Need MongoDB developers? Start with the brief.
Send the requirement and an engineer who runs this technology will tell you what is missing before we source anyone.