Software development outsourcing from Ukraine
Three ways to outsource software development to BigTree108: a dedicated engineer or team embedded in yours, a project we deliver end to end, or a take-over of a system someone else wrote. One contract with a registered Ukrainian company, the intellectual property assigned to you, and people who work your hours.
Three engagement shapes
Dedicated engineers, also called outstaffing
A .NET, Python, front-end, mobile or QA specialist who joins your team full time, works in your repositories and your tracker and reports to your lead. Contracts, payroll, invoicing and leave stay on our side.
How the dedicated model worksA project delivered end to end
You send the scope; we send a written plan and an estimate within one business day, then ship a small first deliverable with tests so you can judge the work before committing to more. Our lead runs the delivery.
See what we have builtA take-over of an existing system
A system another team wrote, inherited with its history. The work starts with a read-only review and a written list of risks, then fixes in order of production impact. Nine such systems so far, the oldest written in 2008.
How a take-over runs
What outsourcing to BigTree108 includes
One contract, one invoice
You sign one agreement with BIG TREE 108 LLC and receive one invoice a month. Ukrainian contracts, tax registration, declarations and payroll never reach your desk.
NDA and IP assignment before access
Every specialist has already assigned their work product to BigTree108, so the ownership chain to your company is complete on day one.
Hours you can see
Every specialist logs time in our portal, and for Upwork contracts Work Diary is the record. The same figures produce the invoice, so there is one source for both sides.
A team behind each person
Architecture review, a second pair of eyes on pull requests and cover during leave come from BigTree108, not from your budget.
Replacement from our own pipeline
Notice periods run both ways, and we hire from a pipeline we run ourselves: technical interviews by nineteen active interviewers, probation and onboarding tracked in the portal.
Written engineering rules
Tests with every change, zero warnings, security by default and everything as code. A change that breaks a rule does not merge, whoever the client is.
Nearshore for Europe, overlapping hours for North America
Ukraine is two to three hours ahead of Western Europe, so for clients in the EU and the UK the whole working day overlaps. For North America we treat the overlap as a hiring requirement: the people on your engagement are assigned or recruited for your schedule, Pacific included, so your stand-up, your reviews and your incidents are handled live rather than the next morning.
How we charge
- Dedicated specialists are billed per person, hourly or monthly. Hours are visible to you throughout the month and one invoice arrives at the end of it.
- Projects and take-overs start with a written plan and an estimate you can hold us to, and a small first deliverable you can judge before committing to more.
- Through Upwork if you prefer: hourly or fixed-price contracts under Upwork payment protection, with the same team.
We quote per engagement rather than publishing a rate card, because the stack, the seniority and the length of the engagement change the number. Write to hello@bigtree108.com with what you need and you will have a written estimate within one business day.
A registered company you can verify
BIG TREE 108 LLC is entered in the Ukrainian state register, and a second company, BIG TREE 108 SECURITY LLC, is a resident of Diia City, the legal regime Ukraine created for technology companies. Both registration numbers, the registered address and links to the register are on the contact page; the terms of service are published rather than sent on request.
Services you can outsource
Nine services, all staffed from the same team, so the backend, the app, the tests and the design are one conversation rather than four vendors.
.NET development
ASP.NET Core APIs, Azure Functions, EF Core and SQL Server from our largest engineering practice, backed by a Top Rated Plus Upwork agency. Take-overs of existing codebases welcome.
Python development
Python backends, data pipelines, AI agents and vector-database work, on AWS or Azure, delivered by engineers we hire and interview for exactly that stack.
Front-end development
Front ends on Angular, React, Vue and Next.js: design systems, accessibility checks on every component, and end-to-end tests that run before every release.
Mobile development
Native iOS apps in Swift, cross-platform apps in .NET MAUI and React Native, built by engineers who also own the backend the app talks to.
Cloud and DevOps
Azure Functions, Azure SQL with Always Encrypted, Terraform for every resource and GitHub Actions pipelines, with drift detection and cost control built in from the start.
QA and test automation
Manual QA, test plans and automated suites in Playwright, run in continuous integration so a failing test blocks the release rather than reaching your users.
UI and UX design
Figma design systems, prototypes and interface design, handed to engineers in the same company who build them pixel-accurate and accessible.
Webflow and WordPress
Marketing sites in Webflow and WordPress, built to load fast, rank and stay editable by your own marketing team, with the option to move to a custom front end later.
Dedicated team
Long-term specialists embedded in your team, from .NET and Python engineers to QA, designers, project managers and executive assistants. Contracts, invoicing, payroll and leave handled on our side.
The company in numbers
- 30+
- people on the team
- 20+
- client organisations
- 20+
- client projects delivered or running
- 13
- engineering and operations disciplines
Source: BigTree108 staff directory, 4 September 2026
Our record on Upwork
Where our client history is public and verified by the platform rather than written by us.
- Top Rated Plus
- Upwork status of the agency
- 100%
- job success score
- 50
- jobs completed through the agency
- 11,121
- hours worked for clients
Source: BigTree108 agency profile on Upwork, checked 4 September 2026
Questions about outsourcing to Ukraine
What is the difference between outsourcing and outstaffing at BigTree108?
Outstaffing is a dedicated specialist who joins your team full time, works in your repositories and your process and reports to your lead, while BigTree108 carries the contract, payroll and leave. Outsourcing a project means we deliver it end to end with our own lead, plan and tests. Both run under one agreement with BIG TREE 108 LLC and one invoice a month; the difference is who manages the day-to-day work.
Is BigTree108 a nearshore or an offshore software development company?
Nearshore for Europe and the UK: Ukraine is two to three hours ahead of Western Europe, so the whole working day overlaps. For North America the distance is offshore on a map, but we staff each engagement to the client’s hours, Pacific included, so stand-ups, reviews and incidents are covered live rather than the next morning.
How quickly can an outsourced engineer or team start?
When the person is already on the team, the start is gated only by your interview and the NDA and IP assignment. When we recruit for the role, a search typically produces candidate profiles within two to three weeks; nineteen people on the team are active technical interviewers, so the assessment is done by someone who does the work.
Who owns the code and the intellectual property?
You do. Every specialist has a signed contract with BigTree108 that assigns all work product to the company, and our agreement with you assigns it onward, so the chain of ownership from the person writing the code to your company is complete before any access is granted.
How do you charge for outsourced software development?
Dedicated specialists are billed per person, hourly or monthly, with the hours visible to you throughout the month. Project work starts with a written plan and an estimate you can hold us to. We quote per engagement rather than publishing a rate card, because the stack, the seniority and the length of the engagement change the number; write to hello@bigtree108.com and you will have an estimate within one business day.
Is there a minimum engagement?
Dedicated engagements are sized in months rather than tickets, because that is where the model pays off for both sides. Project work can start with a small, shippable first deliverable with tests, so you can judge the work before committing to more.
Can we keep the contract and payments inside Upwork?
Yes. The same team is available through our Upwork agency, which is Top Rated Plus with a 100% job success score across 50 completed jobs and 11,121 logged hours, so hourly or fixed-price contracts can run under Upwork payment protection.
How do you keep quality high when the team is remote?
With written engineering rules that every change is reviewed against: tests ship with the feature, the build ends with zero warnings, security is deny-by-default and everything from infrastructure to DNS is code. A second pair of eyes on pull requests and architecture review come from BigTree108, not from your budget. The rules are published on the services page.
Thinking about outsourcing software development?
Send the scope, a repository link or the role you need filled. You get a written plan and an estimate within one business day, from the people who would do the work.