Flink
DataStream APIFlink SQLwatermarkswindows
Data platforms · screened by AceMQ
Hire Flink developers vetted by a Flink practitioner
Conntal places Apache Flink engineers who understand state, checkpoints and backpressure in production stream processing. Every candidate is screened by an AceMQ practitioner who supports production Flink, using a real checkpoint-failure scenario. Available on contract, contract-to-hire or direct hire, typically alongside Kafka.
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
- Flink engineer · Flink developer · Stream processing engineer · Streaming data engineer
- Platforms we screen on
- DataStream APIFlink SQLwatermarkswindows
Rates
What a contract Flink engineer costs
Senior contract Flink engineer 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 Flink 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 Flink engineers: the published screen
Every Flink engineer 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 · Flink engineer
Conntal Vetting Standard
Scenario put to the candidate
As a Flink job's state grows, checkpoints start timing out and backpressure climbs. What do you investigate?
Vetted by
Data and search platform lead · AceMQ
A senior answer contains
- Finds the backpressured operator in the web UI and works backwards to the slowest one.
- Separates checkpoint alignment time from the synchronous and asynchronous phases to see where the time goes.
- Considers incremental checkpoints on RocksDB and unaligned checkpoints, and states their trade-offs.
- Asks whether state should be bounded with a TTL, because unbounded state is often the real cause.
Where a mid answer stops
- Raises the checkpoint timeout and moves on.
- Restarts the job without a savepoint, discarding state.
- Adds parallelism without finding the bottleneck.
What we screen on
Flink skills we screen for
Flink candidates are screened on flink, state and reliability, among others, against the stack you actually run rather than a generic checklist.
State
RocksDB state backendincremental checkpointssavepointsstate TTL
Reliability
checkpoint alignmentunaligned checkpointsbackpressureexactly-once
Ecosystem
Apache KafkaKubernetes operatorCDC
Titles this covers
Flink job titles we place
We place 4 titles in this area, from Flink engineer to Streaming data 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.
- Flink engineer
- Flink developer
- Stream processing engineer
- Streaming data engineer
The platforms, run in production by our network
Engagement
Ways to hire Flink engineers
Platform work usually starts with a defined piece of change and becomes ongoing ownership, which is why most Flink engineers 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 Flink engineers
We are the wrong choice if any of these describe your role, and we would rather say so on the first call.
- Your workloads are batch only; the Spark page fits better.
- You want Flink supported rather than staffed; AceMQ provides support directly.
- You expect a candidate to learn Flink on the job; the screen assumes they have run it in production.
How it works
How hiring Flink engineers 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 Flink engineers: 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
Flink engineers: what buyers ask
Something not covered here? Send the requirement and a practitioner answers it, not a sales queue.
How much does a contract Flink engineer 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 Flink engineer 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 your Flink engineers also know Kafka?
Usually, because most Flink jobs read from or write to Kafka. If the role needs both, each is screened separately.
Can you staff a Flink upgrade or migration from Spark Streaming?
Yes. Both are common bounded contracts, and candidates are screened on state migration with savepoints.
Who vets your Flink engineers?
An AceMQ practitioner who supports production Flink, using the checkpoint 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 Flink 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 Flink delivered as a project or supported as a service instead of staffed? AceMQ does that directly.
Need Flink engineers? Start with the brief.
Send the requirement and an engineer who runs this technology will tell you what is missing before we source anyone.