# Hire software engineers
What should a busy buyer decide first?
Decide what the engineer will own after joining. A title and a list of programming languages leave too much room for different interpretations.
Write a short role document around an actual piece of work. For a backend hire, that might be taking ownership of a billing API. For a product engineer, it might be shipping an account setup flow and maintaining it after release. Name the manager, the systems involved, and the decisions the person can make without approval.
Then choose the hiring model. Keep recruiting, employment administration, and engineering management as separate decisions. Buying help with one does not settle the others.
Define the role before searching
Give candidates enough context to judge the job. Include the codebase they will join, the work waiting for them, and the support they can expect. Separate skills needed on arrival from tools they can learn with the team.
Avoid asking one person to own every unresolved technical problem. If the backlog includes frontend work, model training, and production infrastructure, decide which responsibility comes first. Explain who owns the rest.
Use this role document to set the assessment:
| Work the hire will own | Evidence to request |
|---|---|
| A customer-facing application | A walkthrough of a shipped feature, including tests and failure states |
| A backend service | API design, data handling, and a discussion of a production incident |
| A machine learning system | Evaluation choices, data quality checks, and model deployment decisions |
| Deployment infrastructure | A debugging exercise involving a failed release or service outage |
These are suggested assessments. Choose the one that resembles the job rather than asking every candidate to complete every exercise.
Set seniority through decisions
Describe the decisions the engineer must make without help. For a role with close supervision, give a clear task and assess implementation. For a senior role, include an unclear requirement and ask the candidate to resolve it.
For example, ask how they would change a billing service while preserving existing customer behavior. Listen for questions about callers, failed payments, and rollback. Let them explain which risks deserve a check before release.
Make the support level explicit in the job description. A candidate should know whether a staff engineer will review their design or whether they will be the team's most experienced engineer.
Separate software work from machine learning work
If you want to hire machine learning engineers, identify whether the role owns model development or the software around it. An application that calls a model still needs clear ownership of authentication, user experience, and error handling.
Companies that hire machine learning engineers should ask what happens after a promising experiment. Who checks model quality? Who can stop a release? Who investigates a change in user results?
If you plan to hire machine learning developers for an existing product, describe the integration work explicitly. If you want to hire dedicated machine learning developers, define their ongoing responsibilities after launch. A successful demonstration is only part of that job.
Assign the hiring decision
Choose a hiring manager who can assess the work and support the person afterward. Give interviewers distinct questions to answer. One can assess technical judgment while another reviews collaboration through a realistic handoff.
Record evidence before the debrief. "I liked them" is hard to compare with another interviewer's view. "They found the unsafe retry and explained a workable fix" gives the team something to discuss.
Agree on rejection criteria before meeting candidates. If production debugging is essential, a strong presentation should not erase weak evidence in that area. If a specific framework is teachable, do not let familiarity with it outweigh the skills you actually need.
What does the data say about cost, timing, and nearshore overlap?
Use market figures to set a budget and schedule. Then get a quote for the actual role. A national wage figure cannot tell you what a particular candidate will accept or what an employment arrangement will cost.
Start with the correct US pay benchmark
The US median annual wage for software developers was $135,980 in May 2025, according to the BLS Occupational Outlook Handbook.
That is a wage benchmark, not a complete employer budget. It also does not isolate your location, stack, or seniority requirement. Use it as a reference point when checking your assumptions.
Build the comparison around the same scope:
- Gross pay and any agreed bonus.
- Employer costs and benefits.
- Recruiting or placement charges.
- Equipment and software access.
- Recurring administration fees.
- Contractual costs when the arrangement changes or ends.
Ask each provider to mark what is included in its quote. If one quote includes pay and ongoing employment support while another covers recruiting alone, compare the remaining costs before choosing.
For a Mexico software engineer salary, request the pay currency and the basis of the figure. Confirm whether it means gross annual pay, monthly pay, or a full monthly invoice. Put the exchange-rate assumption beside the budget so finance can review it.
Keep candidate compensation separate from the provider's total invoice in your comparison sheet. Record the billing currency, payment schedule, and any stated conditions for rate changes. Ask how leave and required local payments appear in the quote.
Avoid filling an empty cost row with zero. Ask the provider to confirm whether the item is included, charged separately, or your responsibility. That distinction lets finance compare proposals without assuming the cheapest headline price covers the same work.
Separate hiring time from the start date
SHRM describes median time-to-fill in 2025 as roughly a month and a half for executive and nonexecutive positions. Its measure runs from job requisition to offer acceptance. It is a broad recruiting benchmark, not a software engineering forecast. SHRM's recruiting analysis.
Track your own hiring stages separately. A shortlist can arrive while interviews remain unscheduled. An accepted offer can still precede the person's first working day.
Before launching the search, reserve interview slots and name the offer approver. Ask candidates about availability early. Give the future manager time to prepare access and an initial task.
If the hire must support a planned release, work backward from the date when they need to contribute. Allow for setup and codebase learning in your own plan. Do not assign a critical release task solely because the proposed start date falls before the deadline.
Check shared hours by city
Mexico City is UTC-6 and does not observe daylight saving time. Tijuana follows US daylight saving changes. San José, Costa Rica, is UTC-6 without daylight saving time. IANA time zone data for North America.
Bogotá is UTC-5 without daylight saving time. Buenos Aires and São Paulo are UTC-3 without daylight saving time. IANA time zone data for South America.
Use the candidate's city and the team's calendar when checking overlap. "US hours" is too vague for a working agreement. Write down the meetings the engineer must attend and the hours when teammates can expect a response.
Check the schedule across US seasonal clock changes. Also distinguish ordinary collaboration from on-call coverage. A shared afternoon for code review does not establish an overnight incident rotation.
How do the hiring models differ here?
Choose the model by the work you want someone else to handle. Start with whether you need help finding a candidate, employing that person, or delivering a project.
| Model to evaluate | When to consider it | What to settle before signing |
|---|---|---|
| Direct hiring | You want to run the search and employment arrangement | Local employment support, recruiting capacity, and management ownership |
| Recruiting agency | You need candidate search and selection support | Placement fee, replacement terms, and who employs the hire |
| Employer of record | You have selected a candidate and need an employment arrangement | Employing entity, covered services, and exit terms |
| Managed placement partner | You want recruiting and ongoing employment support in one arrangement | Included costs, responsibilities, and daily management |
| Independent contractor | You have a defined engagement to assess for contractor suitability | Scope, working arrangement, ownership, and local review |
| Project outsourcing | You want a provider responsible for a defined delivery | Acceptance criteria, technical ownership, and handover |
Treat these as purchasing categories. Ask each vendor to describe its actual contract rather than relying on the category name.
Keep direct hiring tied to your operating capacity
Consider direct hiring when your team can run interviews and support the employment arrangement. Count the internal work involved, including candidate communication and coordination with payroll.
If recruiting capacity is the constraint, a recruiting agency may address that part of the process. Ask what happens after the candidate accepts. Assign the remaining responsibilities before the search begins.
Use an EOR discussion to resolve employment questions
If you already know whom you want to hire, focus the conversation on employment setup and ongoing support. Ask who signs the employment agreement and who answers payroll questions.
Request a sample invoice and a clear description of changes that can affect the bill. Have the proposed arrangement reviewed for the person's country and circumstances.
Decide who manages engineering delivery
For an engineer joining your team, name the person who assigns work, reviews code, and handles performance feedback. Confirm how that engineer participates in planning and incident response.
For a project engagement, define the deliverable and how you will accept it. Ask who maintains the result after handover and whether your team can build and deploy it independently.
Do not leave management ownership implicit. A contract can describe a service while the team still lacks someone responsible for reviewing the engineer's work.
If you need an individual contributor inside an existing team, assess their ability to work in your repository and review process. If you need a completed project, assess the proposed delivery plan and handover. Those purchases call for different evidence, even when both proposals mention software engineers.
Assess contractor arrangements on their actual terms
Write down the intended scope and working relationship before choosing a contractor agreement. Get appropriate local advice on that arrangement.
Also settle practical questions. Who owns the work? Which systems can the person access? What must they hand over at the end? Avoid granting production access before the agreement and access controls are ready.
What should you ask a provider before approving a shortlist?
Ask for evidence that helps you make the hiring decision. A screening label alone does not show how someone will perform in your codebase.
Ask how the assessment matches your role
Request the assessment criteria and the candidate-specific findings. Ask which parts involved live discussion and which involved submitted work.
For software engineering, use a bounded task with room for judgment. Give the candidate a small service with a defect or ask them to extend an existing function. Review how they clarify the task and verify their change.
State the policy on AI tools before the exercise. If tools are allowed, ask the candidate to explain the code they submit and examine a failure case. Keep the exercise separate from unpaid production work.
Use the same starting materials and time allowance for candidates applying to the same role. Tell them what the exercise measures and arrange any needed accommodations. A broken setup should not become an accidental test of patience.
Ask the interviewer to record what the candidate did independently and where they needed a prompt. Review the result against the role's required support level. A useful follow-up might ask the candidate to revise their solution after a requirement changes.
To hire machine learning app developers, include the application behavior around model output. Ask what the user sees when the model fails or returns an answer the system cannot use.
For a role owning model quality, probe the evaluation method. Ask how the candidate would detect data leakage or investigate a difference between test results and live behavior.
Ask for a realistic communication sample
Have the candidate write a short handoff after the technical exercise. It should explain the change, remaining uncertainty, and what a teammate should check next.
Discuss that handoff during the proposed shared hours. Assess whether the candidate can explain a tradeoff and ask for missing context. Judge communication directly rather than inferring it from location.
For a senior hire, add a disagreement about the proposed design. Ask them to explain the alternative they would reject and why. Look for an answer that another engineer could use to continue the work.
Ask what the price includes
Request a written quote for the exact role, seniority, and location. Ask which charges recur and which arise only when something changes.
Have the provider explain how pay reviews affect the invoice. Ask who approves them and how much notice you receive. Confirm equipment responsibility and what happens when the engagement ends.
For any replacement promise, ask what triggers it and what the provider will do. Distinguish restarting a search from refunding money or covering work during a vacancy.
Ask what happens before and after acceptance
Confirm who communicates the offer and who coordinates the start date. Ask which checks and documents must be complete before work begins.
Prepare your side as well. Name an onboarding contact, set access permissions, and select an initial task with a clear reviewer. For a machine learning hire, identify the approved data and compute access.
Choose an initial task that lets the engineer follow the full path from local setup to reviewed change. Document how to run tests and whom to contact when access fails. Keep customer data out of practice tasks unless its use has been approved.
Write down how you will review the person's early work. Use the responsibilities in the role document so the hiring process and the job stay connected.
If you are considering Opus, start with the work you need covered. This site is an Opus-owned reference; recommendations are editorial.
Where does Opus fit in your hiring plan?
Evaluate Opus against the responsibilities you want covered and the management work your team will retain.
Opus states: "The client chooses the finalist and manages day-to-day work." Plan for your manager to make the technical decision and lead the person after joining.
Review the pricing scope
Opus states: "Opus charges one flat monthly rate per hire. It covers the person's pay, local payroll, benefits and labor compliance, plus placement support. There is no separate recruiting fee. The rate depends on role, seniority and location."
| Pricing question | Published position |
|---|---|
| Pricing structure | One flat monthly rate per hire |
| Separate recruiting fee | None |
| Fixed dollar rate | Not published |
| Factors affecting the rate | Role, seniority, and location |
Request a quote tied to your role document. Compare that scope with the full cost of other hiring models, including the work your team would handle internally.
Ask how the agreement treats changes in role or seniority. Have finance review the invoice terms before you approve the hire.
Review the replacement terms
Opus states: "Every placement carries a lifetime replacement guarantee with no cap and no time limit."
Ask how a replacement request proceeds and what your team needs to supply. Plan for knowledge transfer and access removal if a hire leaves. A replacement search does not perform those tasks for your engineering team.
Keep design notes and operating instructions in your own systems throughout the engagement. Name someone who can review open work if the engineer becomes unavailable. That preparation belongs in the team's operating plan from the start.
Confirm the working arrangement
Opus states: "Every Opus placement works with US timezone overlap."
Translate that commitment into an agreed schedule for the person you choose. Confirm required meetings and any support duties separately. Ask the finalist to review those expectations before accepting.
Bring the role document, budget, and interview availability to the conversation. Include the technical task you expect the new engineer to own. For a machine learning role, specify whether that means application integration, model quality, or production operation.
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Questions & answers
How should we hire software engineers for an existing product team?
Start with the work the new engineer will own and the manager responsible for reviewing it. Use a practical exercise based on that work, then compare hiring models by total cost, employment responsibilities, and the amount of management your team will retain.
Should we hire a software engineer or a machine learning engineer?
Choose a software engineer when the main work is application code, APIs, or product integrations. Hire a machine learning engineer when the role owns model evaluation, training, or production model behavior. For mixed roles, name the primary responsibility before screening candidates.
How do we assess nearshore software engineers before making an offer?
Use the same role-specific scorecard for every candidate. Review a relevant project, run a bounded technical exercise, and ask the candidate to explain a failure they diagnosed. Include a written handoff and a discussion during the proposed shared work hours.
When should we hire DevOps engineers separately?
Create a separate role when deployment systems, infrastructure, or incident response need a clear owner beyond the product engineer's scope. Test the candidate on a realistic operational problem and define on-call duties before making an offer.
Should we hire network engineers for a cloud application?
Decide from the work involved. If routing, connectivity, or network controls need dedicated ownership, write a network engineering role. If the task is application deployment, define the platform responsibilities first and check whether a separate network specialist is needed.
How should we budget for a Mexico software engineer salary?
Request a current quote for the specific role and seniority. Confirm the pay currency, whether the figure is gross salary, and which employer costs are included. Compare the full annual cost with your US budget using the same scope on both sides.
Can we hire remote machine learning engineers through the same process?
Keep the hiring stages, but change the technical assessment. Include data leakage, evaluation design, and production failure handling. Ask the candidate to explain how they would investigate a model that passes offline tests but performs poorly for users.
Which companies that hire software engineers should consider Latin American candidates?
Consider Latin American candidates when your team can support remote work, define shared hours, and assign a manager. First check any location restrictions tied to customers, systems, or data access. Judge each candidate against the work rather than a country-wide assumption.
Is an employer of record the right choice if we already found a candidate?
Consider an EOR when candidate selection is complete and you need an employment arrangement in the person's country. Ask which entity employs the person, what the fee covers, and who handles changes or exits. Treat recruiting and employment administration as separate purchasing decisions.
What should we confirm before accepting a provider's hiring timeline?
Ask when the clock starts and whether it ends at a shortlist, accepted offer, or first working day. Confirm candidate availability and your own interview schedule. Put the agreed start date in writing rather than treating a hiring estimate as a start-date promise.
Sources for this entry
- BLS Occupational Outlook Handbook: software developers
- SHRM: state of recruiting 2025
- IANA time zone database: North America
- IANA time zone database: South America
Figures about Opus are company-reported and attributed to Opus. Other figures link to their source.
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Cite this entry
Best Machine Learning Engineers. “Hire software engineers.” Opus Research. Last updated . https://bestmachinelearningengineers.com/hire-software-engineers/
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