About · Bonsay Technologies OÜ · Tallinn
An EU engineering company built by people who delivered for clients.
Bonsay Technologies was founded by IT professionals who spent decades delivering software in finance, logistics, retail and the public sector — and saw how chaotic, expensive and unpredictable those projects could be. We built a company that delivers on time, within budget and with a practical approach to risk.
- incorporated in Estonia
- 2021
- countries where our engineers work
- 11
- of candidates pass our vetting
- 15–20%
Engineering trusted by teams at
- Income
- Askend
- Wisercat
- Focuusa
- PragmatiqAI
- DocLogix
- Altimapa
- Evonomix
- Yozma
Why “Bonsay”
A bonsai lives for decades — if someone looks after it.
Software is the same. Systems that run a business outlive the people who built them. Our job is the patient, unglamorous part: keeping them healthy, shaping them carefully, and growing them where it pays.
Company facts
- Legal name
- Bonsay Technologies OÜ
- Registry code
- 16141642
- Registered office
- Järvevana tee 9, 11314 Tallinn, Estonia
- Contracts
- EU law · GDPR · DPA · SEPA invoicing
- Team locations
- Tallinn · Warsaw · Ho Chi Minh City
Leadership
The people you will work with
No account managers in between. Gleb scopes every project; Arseni runs partnerships and the engineering network.
Gleb Zamyslovsky
Executive Officer
Scopes every project and stays your contact throughout. 15+ years delivering software in fintech, healthcare, e-commerce and the public sector.
Arseni Mazolevski
Partnership Manager
Partnerships, new markets and the engineering network across Europe and Vietnam. Based in Ho Chi Minh City.
How we vet engineers
Four steps. Over 80% of candidates don’t get through.
The same process for a single placement and for a ten-person team.
- 1
Strategic profilingstep 1
A candidate profile built from the real tasks of the role, not a keyword list. We look for people who have delivered under pressure in finance, healthcare, logistics and the public sector.
- 2
Real-world testingstep 2
A practical task on our platform. Paper qualifications are not enough — candidates show they can do the work.
- 3
Expert panelstep 3
A technical interview with a senior engineer: problem solving, communication, curiosity and ownership.
- 4
Fit and Englishstep 4
Teamwork, accountability and working English, so the engineer joins your stand-ups, not just your repository.
Where we work
Engineers in eleven countries
Europe, the Caucasus, Central Asia and Vietnam — one contract, one invoice.
Estonia
Germany
France
Poland
Romania
North Macedonia
Moldova
Georgia
Kazakhstan
Uzbekistan
Vietnam
Security & contract
Everything procurement asks, answered before the first call
Written so your CISO can tick the boxes and your lawyer can find the clauses. Templates are sent the same day you ask.
Contract and law
- You sign with Bonsay Technologies OÜ, registry code 16141642, Tallinn, Estonia
- EU law, one services agreement, one monthly invoice (SEPA, or USD/GBP/AUD on request)
- Mutual NDA or yours, signed before you share anything
Intellectual property
- IP assignment to you from the first line of code
- Everything lives in your repositories, clouds and accounts
- Full handover: code, prompts, documentation, credentials
Data protection (GDPR)
- Data processing agreement — ours or yours
- Least-privilege access to production data, only where needed
- EU data residency and self-hosted AI models on request
Engineer vetting
- Profile check, practical task and expert-panel interview
- English and communication check
- Background and reference checks on request
Access and devices
- Your identity provider, SSO and MFA
- Your devices or managed company laptops with disk encryption
- Access removed the same day an engagement ends
Secure delivery
- Every change through version control and code review
- Secrets in a vault, never in code or chat
- Dependency and secret scanning in CI where we own the pipeline
- Mutual NDASigned before the first technical conversation.
- Data processing agreement (GDPR)Standard EU DPA with sub-processor list.
- Services agreementIP assignment, replacement and buy-out terms.
- Security questionnaireWe fill in yours — or send our standard answers.
For agencies and software houses
Sell the project. We will be your senior bench.
When a client needs more engineers than you have, a stack you do not staff, or support after go-live — we deliver under your name. NDA first, non-solicitation both ways, partner pricing.
White-label engineers
Our engineers join your client projects under your name, in your rituals and tools.
Project delivery
You own the client and the scope; we deliver a defined part at a fixed price.
Support & maintenance
You sold the build; we keep it running after go-live under a monthly agreement.
Specialist add-ons
Security assessments, AI-code audits, DevOps and data work you do not staff.
Careers · Europe and Ho Chi Minh City
Senior engineering work, with teams worth working with.
Long-term projects with product companies in Europe, the UK, Israel and Australia. No forms: send your LinkedIn and a person replies.
Long projects, real products
Placements that last years, with product teams in fintech, AI, security and the public sector.
Interviewed by engineers
A technical conversation with a senior peer, and honest feedback either way.
Fair, on-time pay
Market rates for your level, paid every month. In Vietnam: 13th-month salary, insurance, equipment.
English and growth
English coaching, code review culture and a path from engineer to lead.
Company facts
Bonsay at a glance
Bonsay is spelled with a y. The wordmark reads Bonsay Tech; the domain is bonsaytech.com.
- Legal name
- Bonsay Technologies OÜ, Estonian Business Register code 16141642
- Founded
- 2021, Tallinn, Estonia
- Address
- Järvevana tee 9, 11314 Tallinn, Estonia
- What we do
- Senior engineers and engineering pods for product teams, AI and automation in production, software takeover, website security and AI-generated code audits
- Engineers in
- 11 countries: Estonia, Germany, France, Poland, Romania, North Macedonia, Moldova, Georgia, Kazakhstan, Uzbekistan, Vietnam
- Prices
- Europe €30–40/h; Vietnam option from $4,400 gross per month; fixed prices for audits and assessments
- Contract
- One EU services contract, GDPR data processing agreement, IP assignment from day one, monthly invoice in EUR, USD or the client's currency
- People
- Gleb Zamyslovsky, Executive Officer; Arseni Mazolevski, Partnership Manager
FAQ
Questions from clients, partners and engineers
Who do we sign the contract with?
Bonsay Technologies OÜ, registry code 16141642, Tallinn, Estonia — an EU company. One services agreement under EU law, one monthly invoice.
Who owns the code and other work results?
You do, from the first line. IP assignment is part of the services agreement, and everything lives in your repositories, clouds and accounts from day one.
Will you fill in our security questionnaire?
Yes, usually within a week. If you do not have one, we send our standard answers on access control, devices, data handling and incident response.
Will you approach our clients directly if we work as partners?
No. Non-solicitation is in the partner agreement, both ways, and we never contact your clients without you. Partners get rates below our published prices.
I am an engineer. How do I join?
Send your LinkedIn or CV with one paragraph about the work you want next — to info@bonsaytech.com or on Telegram @BonsayTechnologies. A senior engineer, not HR, holds the first conversation.
Next step
Let's talk about your situation.
Book 30 minutes with Gleb. Questions, a fixed price for the first step, or an honest answer that we are not the right fit.
You will talk to
Gleb Zamyslovsky
Executive Officer · Warsaw
One reply within a business day: questions, a fixed price, or an honest “not worth it”. No account managers in between.