Backend services
Implement application rules and integrate data from existing systems.
Python Development
Python services, APIs and automation for business products, with explicit data contracts, background work and operational handover.
for row in catalogue:
result = validate(row)
if result.valid:
queue.upsert(row)
else:
report.add(result.errors)Valid rowsCorrection report
Tools & technologies
- Python
- Django or FastAPI
- PostgreSQL
- Task queue
Import a supplier catalogue
Capability Example
A supplier uploads a CSV with valid rows, duplicates and missing prices.
Illustrative data. Nothing is sent to an external system.
Example workspace1 / 3
CSV validation
1row 1: valid
2row 2: duplicate SKU
3row 3: price missing
Check the file schema and collect row-level errors.
Import job
1valid row processed
2invalid rows isolated
3job_id: import-17
Upsert valid rows in bounded batches with a resumable job ID.
Import report
1accepted: row 1
2corrections: rows 2 and 3
3retry uses the same import ID
Return accepted, rejected and unchanged record counts.
An import result with actionable row errors and a repeatable retry path.
Follow the record through the next step
Services and jobs with explicit data contracts.
Processing jobs
Validate files, transform records and schedule repeatable operations.
Existing Python systems
Maintain frameworks, improve test coverage and untangle slow or fragile jobs.
Code your team can run and change.
- Python service source
- API and data schemas
- Worker and failure-path tests
- Deployment and operations guide
- Python service source
- API and data schemas
- Worker and failure-path tests
- Deployment and operations guide
Separate the request from the long-running work.
Workload shape
Separate interactive API latency from long-running processing needs.
Data ownership
Define validation and conflict rules before allowing imported data to overwrite records.
Questions before we start.
Do we need Django or FastAPI?
Choose from the product's needs: administration, authentication, API contracts and existing code matter more than framework preference.
Can Python connect to an existing frontend?
Yes. It can expose an API for React, Vue, Angular or mobile clients without replacing those interfaces.
Bring your starting point.
Share the data flow, existing integrations and examples of successful and failed inputs.
