File contract
Sheets, columns, formats and identifiers mapped.
Replace repeated spreadsheet preparation with a defined transformation. We build imports, exports and reports that preserve identifiers and show rejected records before they become another cleanup task.
Start this brief
Sheets, columns, formats and identifiers mapped.
Agreed calculations and mappings implemented.
Invalid rows and uncertain matches identified.
Files, run instructions and examples supplied.
Actual project screenshots. Some client interfaces are in their original language.

Home services in the United States. Actual project screenshots. Some client interfaces are in their original language.

Ecommerce platform. Actual project screenshots. Some client interfaces are in their original language.

Commercial interior projects. Actual project screenshots. Some client interfaces are in their original language.
We define the scope and prepare the agreed first prototype or work plan before payment.
You approve the prototype and pay 30%. We begin the agreed implementation.
We show the main pages and functions or agreed milestone deliverables. After acceptance, you pay the next 30%.
We finish the agreed checks and hand over the project, materials and access. You pay the remaining 40% after acceptance.
Scope agreed before work begins. All prices in USD. Applicable taxes and third-party fees are confirmed in the proposal.
We agree the scope and prepare the first prototype before the first payment. You can review the proposed structure and customer journey before deciding to proceed.
The agreed initial prototype covers the key page or customer journey. For SEO, advertising and other projects without an interface, the first reviewable result is a proposed work plan. The number of screens and revisions is agreed in the brief.
You approve the prototype or work plan and pay 30% of the agreed project price. We then begin implementation.
We demonstrate the agreed main pages and functions, or the named project deliverables. Once you accept this milestone, the next 30% is due.
We complete the agreed checks, deliver the project and hand over the agreed materials and access. The remaining 40% is paid after acceptance.
This schedule applies to projects with a fixed scope. Monthly work and small hourly tasks have separately agreed terms. Advertising spend, hosting, licences and third-party fees are listed separately in the proposal.
We deliver remotely. Briefing, reviews and handover take place online, with the meeting times and working language agreed in advance.
Scope, selection criteria and practical delivery details.
A supplier workbook, order export and accounting report have different meanings even when their columns look similar.
We compare input with an approved output and list transformations that may alter a value.
Leading zeros, decimal separators, dates and units need explicit handling. Product codes should not silently become numbers.
CSV exports containing untrusted values are checked for spreadsheet formula risks. Formula preservation or evaluation is agreed separately.
We test malformed rows, empty values, duplicate keys and realistic file sizes. Reports distinguish excluded records from successful changes.
Vladimir Nikolaev agrees reference files with you. Recurring runs and connections to external systems are additional options.

CEO and web development & SEO expert. Web developer and SEO specialist since 2015. Vladimir Nikolaev reviews data rules, implementation choices and acceptance checks with you, so the technical work follows a defined business task.
Answered by Vladimir Nikolaev.
Yes. Identifier columns can be handled as text throughout the agreed workflow.
Yes, with defined sheet names and relationships.
No. We choose an appropriate script or application for the task.
Yes, if the hosting and data access support the agreed execution method.

Give your team one place to manage requests, records and approvals. We build browser applications around the work people actually do, with clear access rights and a practical first release.

Add the function your website is missing without rebuilding the whole system. We develop extensions with a defined job, manageable settings and checks against your current platform.

Help buyers estimate a service or configure a product before they contact you. We turn your pricing rules into a clear calculation, with useful explanations and a route to a qualified inquiry.
Remove confidential data where possible. We will identify transformations and validation rules.