St. Louis, MO
ML Platform Engineer recruiting based on accountable delivery experience. Crosscheck recruits AI, ML & Software Engineering candidates for contract, contract-to-hire, and permanent roles tied to St. Louis.
What We Place
Representative roles
Platforms and technologies
Our Approach
This editorial hiring guide starts with sourced St. Louis business context. St. Louis Development Corporation identifies geospatial technology, health care innovation, advanced manufacturing, and agricultural technology as drivers of the city economy. Those sectors give hiring teams separate data, security, production, and supply-chain settings for technical searches. A ML Platform Engineer search should define the operating boundary before comparing resumes. The brief must distinguish ML Platform Engineer, Senior ML Platform Engineer, ML Infrastructure Engineer and connect role-specific scope to the work this person will personally own. Screening centers on training and inference platforms, developer workflows, model deployment, observability, capacity, reliability, and platform adoption.
Define the systems, delivery stage, operating boundary, and ownership expected from the ML Platform Engineer
Screen candidates for evidence of training and inference platforms, developer workflows, model deployment, observability, capacity, reliability, and platform adoption
Separate direct delivery experience from adjacent product, project, or consulting exposure
Support contract, contract-to-hire, and permanent searches across the US and Canada
Start the search
Include the business context, systems, delivery phase, work model, compensation, and interview timeline. A Crosscheck search lead will use that context to calibrate the role before sourcing begins.
Local Market Brief
Record the required decisions, systems, delivery stage, and support duties for ML Platform Engineer work. Treat Kubernetes, Kubeflow, MLflow, Feature Stores as context for the assignment, not a keyword checklist. Separate that scope from adjacent Machine Learning Systems Engineer, ML Platform Lead, ML Developer Experience Engineer responsibilities so each candidate is evaluated against the same completed brief. Build the calibration map from the actual assignment: ML Platform Engineer against Kubernetes and Kubeflow; Senior ML Platform Engineer against MLflow and Feature Stores; ML Infrastructure Engineer against Model Registry and GPU Infrastructure; Machine Learning Systems Engineer against Inference Serving and Platform APIs; ML Platform Lead against training and inference platforms and developer workflows; ML Developer Experience Engineer against model deployment and observability. For the delivery handoff, trace the working sequence from GPU Infrastructure to Model Registry to Feature Stores to MLflow to Kubeflow to Kubernetes and name who accepts each boundary. The three sourced St. Louis contexts below turn that scope into intake and screening decisions. They do not measure current vacancies, candidate supply, or Crosscheck client activity.
Editorial market scenario
Give candidates the integration, approval, audit, and change-management boundaries during the interview. Ask for comparable decisions from prior work. This is planning guidance, not measured local demand.
Editorial industry scenario
An industrial brief should show how software, data, and infrastructure connect to plants, equipment, schedules, quality, and frontline users. Confirm that this context applies to the employer before using it in the search.
Screening focus
We test for model or application ownership, evaluation discipline, data judgment, and evidence that the candidate has shipped reliable AI systems.
Published labor benchmark
BLS does not publish an occupation matching ML Platform Engineer. Crosscheck uses Data Scientists (15-2051) as the closest published broad benchmark; it is not a count or pay estimate for this exact specialty.
BLS OEWS May 2025, published May 15, 2026
Published metro employment
2,640
BLS publishes a narrower metro employment estimate for the proxy occupation. Screen for adjacent experience that transfers without lowering the production bar. The estimate equals 1.969 jobs per one thousand across the metro workforce.
Employment concentration
1.17 location quotient
St. Louis, MO-IL sits near the national employment concentration for this proxy occupation. Use role evidence and work-model requirements to set the sourcing radius.
Annual wage reference
$59,500 to $158,310
The metro median is 17% below the national Data Scientists median. Do not use the gap to discount niche platform or domain experience. BLS reports a $99,600 median for the proxy occupation in St. Louis, MO-IL.
Hiring brief scenarios
These scenarios connect location context to role responsibilities. Use them as prompts to verify with the employer, not as measures of St. Louis demand, clients, or candidate supply.
Sourced geospatial technology context
A current St. Louis Development Corporation feature names geospatial technology as a driver of the city economy and describes T-REX as an innovation center that works with the National Geospatial-Intelligence Agency. Define how Model Registry, GPU Infrastructure, Inference Serving, Platform APIs fit the employer's current environment. Ask which constraints changed the design, what ML Platform Engineer owned directly, who approved the decision, and how the result was checked after delivery. Geospatial systems can join imagery, sensor feeds, location records, analytical models, map services, access controls, and delivery partners across restricted and public data sets.
Evidence to request: Request a redacted design, configuration, test, runbook, review record, or operating measure that supports the candidate's account of ML Platform Engineer ownership. Define the geographic product, source data, coordinate and accuracy rules, security boundary, model or service interface, update cycle, and approving user.
Sourced health care innovation context
The same St. Louis Development Corporation source identifies health care innovation among the industries that drive the city economy. Set the boundary for ownership checkpoints before interviews. A useful account involving training and inference platforms, developer workflows, model deployment, observability names the starting condition, alternatives considered, implementation sequence, failure handling, and the operating team that received the work. Health innovation work may cross research data, patient or member records, laboratories, devices, billing, workforce systems, access review, and formal release controls.
Evidence to request: Use a comparable scenario involving and platform adoption, ML Platform Engineer, Senior ML Platform Engineer, ML Infrastructure Engineer and score assumptions, technical judgment, communication, delivery steps, and the evidence proposed for acceptance. Name the care, research, product, or business process, record authority, protected data, integration path, validation evidence, downtime limit, and reviewer.
Sourced advanced manufacturing and agricultural technology context
St. Louis Development Corporation also names advanced manufacturing and agricultural technology among the industries that shape the city economy. Connect adjacent role boundaries to an employer decision rather than a broad tool list. Require the candidate to explain work with capacity, reliability, and platform adoption, ML Platform Engineer, including dependencies, controls, measurable evidence, and responsibility when the original plan changed. These operations can connect product formulas or designs, equipment, plants, growers or suppliers, quality, inventory, warehouses, maintenance, traceability, and financial postings.
Evidence to request: Ask for a problem involving Senior ML Platform Engineer responsibilities. Record the signal, diagnosis, decision, corrective action, handoff, and verification the candidate personally completed. Trace one product from design or source through production, quality release, storage, shipment, accounting, exception handling, and change ownership.
Interview scorecard
Ask each candidate the same core questions. Score the evidence, ownership, and judgment in the answer instead of relying on job-title or keyword matches.
1. ML Platform Engineer: Kubernetes
Choose a Kubernetes decision from your work as ML Platform Engineer. Which constraint changed the design, and what evidence supported the result?
Use the answer to assess sensor or production data, edge constraints, model drift, operator review, and measurable process outcomes. The manufacturing and operational systems context is an editorial scenario, not a measured claim about St. Louis.
2. Senior ML Platform Engineer: Kubeflow
Describe project work you completed as Senior ML Platform Engineer involving Kubeflow that did not follow the original plan. What did you own, and how did you correct it?
Use the answer to assess sensor or production data, edge constraints, model drift, operator review, and measurable process outcomes. The manufacturing and operational systems context is an editorial scenario, not a measured claim about St. Louis.
3. ML Infrastructure Engineer: MLflow
For a MLflow system you supported, explain the handoff, operating limits, and measures used after launch. Where did your responsibility begin and end?
Use the answer to assess sensor or production data, edge constraints, model drift, operator review, and measurable process outcomes. The manufacturing and operational systems context is an editorial scenario, not a measured claim about St. Louis.
Screened for training and inference platforms, developer workflows, model deployment, observability, capacity, reliability, and platform adoption, with the boundary set by the employer's systems, delivery stage, and operating model. The evaluation connects Kubernetes, Kubeflow, MLflow to a concrete hiring responsibility.
Show how Kubernetes, Kubeflow, MLflow shaped one delivery decision. Which constraint mattered, and what did the candidate own?
Evidence check: Look for an artifact, test, configuration record, or operating measure that supports the account. Compare it with work such as technical product and platform teams.
Screened for training and inference platforms, developer workflows, model deployment, observability, capacity, reliability, and platform adoption, with the boundary set by the employer's systems, delivery stage, and operating model. The evaluation connects Feature Stores, Model Registry, GPU Infrastructure to a concrete hiring responsibility.
Where did Senior ML Platform Engineer work involving Feature Stores, Model Registry, GPU Infrastructure fail or change direction? What evidence prompted the correction?
Evidence check: A useful answer names the failure signal, the candidate's decision, and the result. Certification alone does not establish project ownership.
Screened for training and inference platforms, developer workflows, model deployment, observability, capacity, reliability, and platform adoption, with the boundary set by the employer's systems, delivery stage, and operating model. The evaluation connects Inference Serving, Platform APIs, training and inference platforms to a concrete hiring responsibility.
Explain the handoff and operating boundary for a project using Inference Serving, Platform APIs, training and inference platforms. Who approved changes, monitored results, and supported the system?
Evidence check: Request documentation, controls, or production measures that distinguish direct ownership from observation or team-level credit.
Screened for training and inference platforms, developer workflows, model deployment, observability, capacity, reliability, and platform adoption, with the boundary set by the employer's systems, delivery stage, and operating model. The evaluation connects developer workflows, model deployment, observability to a concrete hiring responsibility.
Which tradeoff would change the design of developer workflows, model deployment, observability for this hiring task: support contract, contract-to-hire, and permanent searches across the us and canada?
Evidence check: Score the response on technical judgment, stated assumptions, and evidence from comparable work rather than vocabulary coverage.
Organizations hiring across St. Louis can use the market context below to shape location, compensation, and screening requirements for ML Platform Engineer searches.
Technical product and platform teams
Transformation and implementation programs
Internal engineering and operations teams
Systems integration and advisory teams
FAQ
For qualified exclusive searches in our core disciplines, Crosscheck targets a first candidate slate within 48 hours after a completed intake. Contract placements include a 40-billable-hour replacement guarantee, and permanent placements include a 90-day replacement guarantee, subject to the signed agreement.
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