Migrate from Lever to Ashby

MIGRATION OVERVIEW

Why teams migrate from Lever to Ashby

The core problem

There is no native one-click migration path from Lever to Ashby for custom builds. Lever is opportunity-centric — a single Contact has multiple Opportunities flowing through pipelines. Ashby separates this into distinct Candidate, Application, and Job records with structured interview plans and feedback forms.

Why this matters for your migration

The fundamental gap is architectural: Lever treats every interaction as a fluid Opportunity, while Ashby enforces structured evaluation with rigid interview stages. Translating between these models requires splitting records, deduplicating contacts, and navigating two different API styles — REST vs. RPC.

Every custom migration must handle Ashby's deceptive 200 OK error responses, multi-opportunity candidate splitting, timestamp format conversion, and pre-configured feedback form requirements.

KEY CHALLENGES

What makes this migration complex

These are the architectural mismatches and technical hurdles specific to a Lever to Ashby migration.

Most Critical

Ashby 200 OK Error Trap

Ashby returns HTTP 200 even for failed requests. The success/failure is buried in the response body's success field — scripts checking only status codes silently skip failed writes.

Blocks all downstream imports if mapped wrong

Multi-Opportunity Deduplication

A single Lever Contact with many Opportunities must become one Ashby Candidate with multiple Applications. Creating a new Candidate per Opportunity produces phantom duplicates.

Timestamp Conversion

Lever stores timestamps as Unix epoch milliseconds while Ashby expects ISO 8601 strings. Every date field needs explicit conversion.

Feedback Form Pre-Configuration

Ashby's applicationFeedback.submit requires pre-configured feedback form IDs. You cannot dump Lever feedback directly — forms must be created or a generic form must be used.

API Architecture Mismatch

Lever uses REST (GET requests) while Ashby uses RPC-style (all POST requests). Two fundamentally different API patterns must be handled in a single pipeline.

MIGRATION RISK ASSESSMENT

Every migration risk, already solved

Migration between platforms is full of edge cases. Our engineers have identified every risk from Lever to Ashby and built proven solutions for each one.

High complexity

Interview Feedback

Requires pre-configured Ashby feedback forms; structure is lost without upfront template creation

Solved
Confidential Data

Lever requires special API key permission granted at creation time; missing data creates silent gaps

Solved
Multi-Opportunity Candidates

Must produce one Candidate with multiple Applications; incorrect handling creates duplicates

Solved

Custom engineering

Custom Fields

Lever allows flexible fields; Ashby requires strict schema definitions with pre-loaded picklist values

Handled
Pipeline Stages

Lever stages are per-pipeline; Ashby stages are per-job interview plan — requires mapping by name

Handled
Resume Files

Lever allows download via API but Ashby upload capabilities are more limited

Handled

Clean transfer

Archive Reasons

Requires pre-creation in Ashby but mapping is straightforward

Clean
Tags

Direct mapping via candidate.addTag endpoint

Clean
Notes

HTML-formatted notes transfer well via candidate.createNote

Clean
Sources

Map Lever origin and sources fields to pre-created Ashby source categories

Clean

What Our Customers Say

Real migration stories

Direct Review

“Fantastic at both guiding us through the process and helping us fix things as they come up and dial them in.”

Reviewed on G2

“The ease of the process and that ClonePartner was informing me what was going on at every step. If you're on the fence, do it. ClonePartner are great!”

Direct Review

“They were SO helpful. We had a few hiccups because our migration was in the middle of the process, but they were really flexible and did multiple delta migrations for us. We were able to map a lot of our old ticket data so it's usable for comparisons in the future.”

Direct Review

“Overall a great experience. We had to go back a few times to get everything just right, which was totally expected. The transition was smooth, and there was no data loss.”

Direct Review

“One of the easiest migrations I've ever been through. The team took care of everything — all our data, customer interactions and macros. The process was clear, straightforward and we felt supported all the way. An absolutely seamless experience for our support team and our customers.”

See all customer stories →

CUSTOM MIGRATION

Fully customizable engineer-led migration

Tailor your migration from Lever to Ashby exactly to your needs with our flexible customization options. Our experts will configure the perfect migration plan for your business.

Migration Filters

Data Types

ZERO DOWNTIME

Your timeline. Our engineers.

A dedicated engineer runs your migration, planned around your schedule and your data.

No babysitting a wizard. Avoid debugging errors yourself.

Looking for a more detailed migration timeline?

Contact our team

Speed

The migration timeline depends on both our turnaround time and yours.

We can complete a migration in under a day when the accounts are connected and the sample migration is approved promptly.

Background Sync

We also support migrating the newest records first, so you can go live faster while the rest of the data is synced in the background.

Data Volume Impact

Larger data volumes may require longer migration windows.

Continuous Operation

Weekend migrations minimize disruption to your customer service operations.

MIGRATION TIMELINE

Your Lever to Ashby migration, step by step

See how long your migration will take from start to finish. Drag the slider to estimate based on your data volume.

How many records are you migrating?

<10K 50K 100K 250K 500K 1M 2M 5M 10M+

Checklist ~3 days

Sample 1 day

Review ~2 days

Full 2 days

Delta 1 day

Your team ClonePartner

Estimated total

~9 business days

Migration Checklist

1 day · ClonePartner ~2 days · Your team

We prepare the optimal data mapping as a shareable spreadsheet. Your team reviews, approves, and adds any customizations.

Sample Migration

1 day · ClonePartner

We run a test migration with a representative sample of your data to verify mapping accuracy and identify any potential issues before the full run.

Review & Approve

~2 days · Your team

Your team reviews the sample migration results, confirms data accuracy and mapping, and gives the go-ahead for the full migration.

Full Migration

2 days · ClonePartner

We execute the complete migration of all your data to your new Ashby, with real-time progress tracking and comprehensive logging.

Delta Migration

1 day · ClonePartner

We capture and transfer any new data that was added or updated during the main migration to ensure no data is lost. This final sync keeps everything current.

Pros and cons of different migration options

Choosing the right approach is key because migrating from Lever to Ashby isn't just about moving data – it's about protecting your candidate experience and hiring pipeline.

Feature / Criteria	ClonePartner	Automated Tools	CSV Import	In-house migration
Custom Scripting for complex data	✓ Engineers build & maintain	✗ No	⚠ Manual	✓ Yes – but costly
Sandbox & Pilot Migrations	✓ Full sandbox + pilot plans	⚠ Limited	✗ No	⚠ Often Informal
Manual validation & reconciliation	✓ Automated + manual QA	✗ No	✓ Yes (Manual)	✓ Heavy manual effort
Backup & rollback plan	✓ Robust procedures	✗ No	✗ No	⚠ Often incomplete
Handles automation and integrations	✓ Full support	⚠ Partial	✗ No	⚠ Possible but fragmented
Post-migration engineer support	✓ Dedicated engineers	✗ No	✗ No	⚠ Limited hiring support
Adaptable to API changes	✓ Proactive adaptation	✗ No	⚠ Manual fixes	⚠ Slower response
Turnaround / hiring predictability	✓ Predictable hiring timelines	⚠ Fast but brittle	⚠ Slow and manual	⚠ Often slower
Data Security & Compliance	✓ High – enterprise grade	⚠ Medium (depends)	⚠ Low (manual)	⚠ Hidden gaps common
Pricing predictability	✓ Transparent & fixed	⚠ Low (per-job)	⚠ Low (manual hours)	⚠ High/variable OPEX
End-to-end project management	✓ Full E2E delivery & PM	✗ No	✗ No	⚠ Often partial
Business impact & opportunity cost	✓ No diversion of staff	✗ No	✗ No	⚠ Diverts engineering

What does an Engineer-led migration mean anyway?

Speed & Accuracy: Our Blended Method

We blend automation (smart scripts, bulk APIs) with human expertise for speed without risk. Our engineers manually check every mapping, validation, and exception.

You get:

Speed of automation for bulk record migration
Precision of engineers verifying integrity and business logic
Pilot migrations and sandbox testing to catch issues early
Real-time validation reports and rollback readiness

Result: 50x faster migrations than manual imports — with near-zero error rates.

Handling the Tricky Tech and API Details

The Lever and Ashby APIs each behave differently, which is where our engineers shine. We build custom logic to handle the data quirks where generic tools typically break.

We handcraft API logic for:

Field mapping and transformation
Pagination, rate-limit handling, and throttling
Preserving candidate history, resumes, and scorecards
Syncing custom fields, pipelines, and scorecards without breaking structure

Our scripts: Natively retry failed calls, re-queue large attachments, and ensure data parity.

No Guesswork

We don't just promise smooth migrations—we measure and prove them. Every client receives a Migration Validation Report with all metrics.

Typical results across projects:

100% record-count parity between your Lever data and Ashby
Zero downtime during staged cutovers
99.9% attachment integrity (verified via checksum)
Full automation and preservation of all business rules

Our standard: Includes full pipeline and scorecard preservation and 48 hours of engineer-assigned support post go-live.

We Adapt to Your Setup (Not the Other Way Around)

No two teams configure Lever or Ashby exactly the same way—with unique hiring workflows and data. We customize every migration script to fit your exact workflow, pipelines, and scorecards.

Our engineers adapt for:

Custom fields, hiring workflows, and scorecards
Multi-brand or multi-role setups
Historical imports and partial (date-based) migrations
Integration re-mapping for HRIS, background-check, or assessment tools

The promise: If your data doesn't fit a standard template, we build one just for you.

Enterprise-Grade Security & Compliance

Your customer data is precious. Our migration process maintains the highest standards of security and regulatory compliance.

SOC 2 Type II

Independently audited compliance with rigorous security standards

ISO 27001

Certified information security management system

GDPR

Full compliance with EU data protection regulations

HIPAA

Certified for handling protected health information

AES-256 Encryption

Bank-grade encryption for all stored credentials

Latest TLS

Secure transfer protocol for all data in transit

Role-Based Access

We follow role-based access control for every migration project

Scheduled Deletion

Automatic data purging after migration completion

FAQ

Frequently Asked Questions

Everything you need to know about migrating from Lever to Ashby. Can't find what you're looking for? Talk to our team.

How long does a Lever to Ashby migration take?

A CSV-based migration for under 500 candidates can be done in a day. A full API-based migration preserving interview history, feedback, and relationships typically takes 2-4 weeks for a custom ETL build, or days with a managed migration service.

What are the Lever and Ashby API rate limits?

Lever enforces 10 requests per second per API key (2 req/sec for application POSTs). Ashby allows 1,000 requests per minute per API key. Report endpoints in Ashby are further limited to 15 requests per minute.

Can I migrate interview feedback from Lever to Ashby?

Yes, but not via CSV. You need to extract feedback per Opportunity via Lever's API, then load it into Ashby via the applicationFeedback.submit endpoint. Ashby requires pre-configured feedback forms, so you must create matching forms before importing — or create a generic 'Migrated Feedback' form and map all Lever feedback into a text field.

Why can't I use a CSV export to migrate from Lever to Ashby?

CSV exports flatten relational data. You lose the links between candidates, applications, interview notes, and scorecards. Multi-opportunity candidates become duplicate rows. Ashby explicitly says its self-serve CSV import is not a comprehensive candidate-lifecycle migration.

How do I avoid duplicate candidates during the migration?

Ashby does not enforce deduplication on candidate.create. Build a local lookup table keyed by canonical email address. Before every candidate.create call, check whether that email already has an Ashby candidate ID. One Lever Contact with multiple Opportunities should produce one Candidate and multiple Applications.

How long does the Lever to Ashby migration take?

Most migrations complete within 1–5 business days, depending on data volume and complexity. We provide a detailed timeline after the initial assessment and can often complete small migrations in under 24 hours.

Will my team lose access to Lever during the migration?

No. Your source system remains fully operational throughout the entire migration. We run the migration in the background with zero downtime to your current operations.

Will there be downtime when migrating from Lever to Ashby?

No. Our migration process is designed for zero downtime. We use a staged approach with background sync and a fast cutover, ensuring no disruption to your live business operations.

How do I validate that everything migrated correctly?

Every client receives a Migration Validation Report with comprehensive metrics including record-count parity, attachment integrity verification via checksum, and full audit logs. We also offer unlimited sample migrations so you can verify before committing.

Do I need professional help for this migration?

While simple migrations can sometimes be handled in-house, professional help ensures zero data loss, proper field mapping, and preservation of relationships between records. Our engineer-led approach catches edge cases that automated tools miss.

Does ClonePartner provide guidance before committing?

Yes. We provide a free consultation and assessment. We'll review your data structure, discuss your requirements, and provide a detailed migration plan and fixed-price quote before you commit to anything.

Still have questions?

Book a free 30-minute consultation with our migration engineers. We'll walk you through the exact approach for your Lever→Ashby migration.

Contact our team

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Ashby Migration?

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Attention to Detail

We meticulously handle every aspect of your migration, ensuring no data is lost during transfer and mapping every field correctly between platforms.

Custom Solutions

Every business is unique. We tailor your migration strategy to match your specific requirements, workflows, and data structures.

Security & Compliance

Your customer data is handled with enterprise-grade security protocols, ensuring compliance with GDPR, HIPAA, and industry standards.

Migrate from Lever to Ashby with precision & ease

Why teams migrate from Lever to Ashby