Tool-using agents

Hire Agentic Workflow Engineers who build AI agents that can use tools safely.

Get a dedicated Agentic Workflow Engineer to design multi-step AI workflows with tools, approvals, memory, retries, traces, and human review. Shortlist in 48 hours. Two-week paid trial in your codebase. Starts at $2,500/mo.

Starts at $2,500/mo48h shortlistTwo-week paid trialFree replacement

Direct answer

What does Agentic Workflow Engineer own?

An Agentic Workflow Engineer is the right hire when an AI system must plan steps, call tools, respect permissions, recover from failures, and involve humans at the right moments. This role owns agent graphs, tool registries, approval gates, memory rules, retries, traces, and workflow evaluation.

Hiring problem

Hire this role when an AI workflow must use tools, approvals, retries, and traces.

Agent demos look impressive until they hit real permissions, unreliable tools, partial failures, retries, approval rules, rate limits, and unclear accountability.

What this role owns
  • Workflow decomposition
  • Tool registry
  • Agent graph design
  • Planning and execution control
  • Memory rules
  • Human approval gates
  • Retry/fallback logic
  • Observability/tracing
  • Tool permission boundaries
  • Evaluation of agent behavior
What this role is not for
  • A simple chat UI
  • One-off prompt automation
  • Pure RAG without tool use
  • Model quality work without workflow execution

First 14-day proof

The trial should create evidence, not just activity.

Workflow graph

Maps states, steps, tools, users, retries, and exit conditions. It makes an "agent" concrete enough to review before any autonomy is granted.

Tool inventory and permissions

Lists every tool the agent can call and what authority each one has. A weak version lets the agent do anything; a strong one scopes blast radius up front.

First agent slice

A bounded workflow that executes one useful path with logs and review. It proves the agent can finish real work, not just plan it.

Trace logs

Shows every step, decision, input, output, tool call, and failure. Without traces, agent bugs are unreproducible; with them, they are debuggable.

Failure and retry policy

Defines when to retry, ask a human, stop, or roll back. This is the difference between a self-correcting workflow and a silent runaway.

Human-in-loop gates

Defines approvals for risky actions, sensitive data, payments, account changes, or external communication. It keeps a confident agent from acting beyond its mandate.

Risk list

Lists the ways the agent can cause harm or confusion, and how each is controlled. It is the artifact a security or ops reviewer will ask for first.

Default stack

Stack fluency for Agentic Workflow Engineer work.

The exact tools follow your environment. These are the common surfaces we vet against for this role.

LangGraphTemporalDurable workflowsOpenAIAnthropicGeminiPythonTypeScriptTool APIsQueuesTracingEvalsApproval UI

Use cases

Where this hire creates leverage.

The best use case is one where the role can own a clear first proof during the paid trial.

Support automation

An agent triages and acts on support workflows with explicit escalation rules. The first proof is one bounded path with traces and a human gate.

Back-office workflows

An agent handles internal operations with approvals and auditability so finance and ops can trust what it did.

CRM/ERP actions

An agent updates systems only within permissioned boundaries. Add an AI Security Engineer if tool authority touches money or customer records.

Research agents

An agent gathers, evaluates, and structures information without hiding its sources. Pair with a RAG & Context Engineer if grounding is central.

Approval workflows

An agent prepares actions but waits for human approval at defined gates — useful when the cost of a wrong action is high.

Internal operations copilots

An agent helps staff complete multi-step tasks across systems, with every step logged for review.

Transparent pricing

Pick seniority by ownership, not mystery quotes.

Junior
$2,500/mo

Supervised delivery for clear implementation work.

Mid
$3,500/mo

Independent feature ownership for production AI work.

Senior
$4,500/mo

High-judgment ownership for ambiguous or risky AI delivery.

Outcome clarity

What should change after you hire this role?

Agent work is bounded and observable.

Tool authority is explicit.

Failures have retry, recovery, and handoff rules.

Vetting criteria

Screened for this role’s failure modes.

Agent graph design

Tool permission boundaries

Human approval gates

Retry and fallback reasoning

Traceability

Interview questions

Use the interview to test judgment.

  1. How do you stop one bad tool call from becoming an incident?
  2. Where do humans enter the workflow?
  3. How do you design retries safely?
  4. What traces do you need to debug agent behavior?

Hiring flow

From scope to paid trial.

Day 0

30-minute role scope

Map the AI workflow, current stack, first deliverable, security boundaries, seniority, and the role that should own the work.

Hour 48

2-3 vetted engineers

Receive a short list with matching rationale. The goal is fewer names with stronger fit, not resume volume.

Week 1-2

Paid trial in your codebase

The selected engineer works inside your repo, rituals, issue tracker, and review process so fit is judged by real work.

After trial

Continue, replace, pause, or scale

Continue month-to-month, request a free replacement, pause without a long lock-in, or add adjacent roles.

Security, IP, governance

Repo access is scoped before the engineer starts.

NDA, IP assignment, repository access, communication channels, data boundaries, and AI tool rules are clarified before onboarding. Devlyn avoids unverified compliance claims and works within buyer-controlled systems.

FAQ

Questions before you hire Agentic Workflow Engineer.

When does a workflow need an agent?

When the work has multiple steps, changing state, external tools, and consequences if the system acts incorrectly.

How do you keep agents safe?

By limiting tool authority, validating inputs, adding approval gates, tracing every step, and designing recovery paths before launch.

What should they ship first?

A bounded workflow graph, first tool-using slice, trace logs, failure policy, and human approval design.

How fast can I see Agentic Workflow Engineer candidates?

After the role scope, Devlyn targets two or three vetted profiles within 48 hours.

What does the two-week paid trial include?

The trial should produce role-specific proof for Agentic Workflow Engineer work inside your actual repo, data environment, or approved workflow.

Can the engineer work in our repository?

Yes. Repo access, communication channels, data boundaries, NDA, and IP assignment are scoped before onboarding.

What if fit is wrong?

You can request a free replacement instead of being forced through a long lock-in or conversion fee.

What does pricing include?

Pricing covers one dedicated AI-native engineer. Junior starts at $2,500/mo, mid at $3,500/mo, and senior at $4,500/mo.

Final CTA

Tell us the AI workflow. We’ll confirm whether Agentic Workflow Engineer is the right hire.

If another role is a better fit, the role scope should catch that before you interview anyone.