Software engineering · EU contract · 11 countries

Six situations we are called for. Find yours.

We build, take over and secure business-critical software, put AI into production and add senior engineers to teams that need them now. Each situation has a fixed first step and a price.

One reply from Gleb within a business day: questions, a fixed price, or an honest “not worth it”.

Hiring log · example role · senior java
  1. Day 0Role received · Spring Boot, Kubernetes, fintech, full-time
  2. Day 1pool.search(java, senior, CET) · 23 profiles
  3. Day 1–2tech interviews by our architect · 5 pass
  4. Day 33–5 CVs with notes sent · interview slots offered
  5. Day 4–5Your technical interview · decision
  6. Day 7Contract signed · onboarding · named contact
Typical for common stacks · rare stacks up to two weeks
to 3–5 vetted CVs per role, rare stacks two weeks
~5 days
senior engineers from Europe, on Central European hours
€30–40/h
a three-engineer pod costs less than one senior on Toptal
3 for 1
first step and published price for every situation
Fixed

Engineering trusted by teams at

  • Income
  • Askend
  • Wisercat
  • Focuusa
  • PragmatiqAI
  • DocLogix
  • Altimapa
  • Evonomix
  • Yozma

Situations

Which one sounds like you?

Pick the sentence closest to what you said in your last management meeting. Each one has a first step you can stop after, and a price.

How we work

Six rules in every contract.

  • A fixed first step and a price

    Every situation starts with a scoped step you can stop after. No open-ended discovery phase billed by the hour.

  • Engineers vet engineers

    Candidates pass a technical conversation with a senior peer before you see them. Only 15–20% get through.

  • One EU contract

    You sign with Bonsay Technologies OÜ in Tallinn: GDPR, DPA, IP assignment from day one, one monthly invoice.

  • You own everything

    Code, workflows, prompts, credentials and documentation are yours. No lock-in, no hostage situations.

  • An honest “not worth it”

    If automation, a takeover or an extra engineer won't pay back, we say so on the first call.

  • Measured, before and after

    We count hours, incidents and lead time before we start, and measure again when we hand over.

Compared honestly

Senior engineering, without the platform markup or the enterprise overhead

What one senior engineer costs and how fast they start — published, not “on request”.

Full comparison
  • Senior, per month

    €30–40/h in Europe (≈ €5,000–6,700) · Vietnam option from $4,400

    Freelance platform: $13,000–18,000 · Large vendor: $12,000–14,000

  • Time to first CVs

    ~5 days, rare stacks two weeks

    Freelance platform: Days · Large vendor: 4–8 weeks

  • Who vets

    Our senior engineers, 15–20% pass

    Freelance platform: Platform test · Large vendor: HR, then the project

  • Who is accountable

    A named lead who answers within a business day

    Freelance platform: You manage the freelancer · Large vendor: Account team

  • If it doesn't work

    Free replacement within 90 days

    Freelance platform: Find someone else · Large vendor: Change request

Europe · our core bench

Senior engineers from Europe. On your hours, under EU law.

Most of our engineers work from 10 countries across the EU, the Balkans, the Caucasus and Central Asia — one to three hours from Berlin, London or Tel Aviv. They join your stand-ups, your repository and your on-call rota.

  • Full working-day overlap with Central Europe, the UK and Israel
  • Rare stacks: C/C++, DevOps on Azure, AWS and GCP, data engineering, data science
  • Engineers vetted by our own senior engineers — 15–20% pass
  • EU contract, GDPR data processing agreement, IP from day one
  • On-site kick-offs and workshops by agreement
per hour, senior, excl. VAT
€30–40
per month, full-time
≈ €5,000–6,700
from role to first working day, common stacks
~1 week
time difference to your team
CET ±2 h
  • Estonia
  • Germany
  • France
  • Poland
  • Romania
  • North Macedonia
  • Moldova
  • Georgia
  • Kazakhstan
  • Uzbekistan

Proof, not promises

Work we can show

Placements that lasted years, systems replaced on time, data migrated.

All cases
  • Stabilisation

    Income · P2P lending platform

    Investor frontend back on a release cycle

    The investor-facing frontend had an inherited backlog and broken release cycles. Our senior React/TypeScript engineer joined the team and stayed four years.

    to clear the inherited backlog
    10 days
    faster page load
    ~18%
    of cooperation, variable workload
    4 years
  • Legacy replacement

    Document-management software vendor · Baltics

    Legacy document system replaced end to end

    Replaced the vendor's legacy document system with a no-code automation platform: process modelling, dynamic forms, rule-based workflows and an audit trail.

    delivered end to end by Bonsay
    8,000+ h
    people: PO, UX, analysts, developers, DevOps, QA
    11
  • Legacy replacement

    Public-sector financial institution · Estonia

    Loan and guarantee system replaced, all data migrated

    Senior Java, React and architecture engineers replaced an outdated loan and guarantee management system, including migration of all data from the old system.

    senior engineers over two years
    10
    launch with all data migrated
    On time
    several engineers joined the client's own team
    Kept

What clients say

Teams that stayed for years

Founders and CTOs who hired us once and kept working with us.

  • The role of the Bonsay team in establishing a strong team of experts and executing the project was instrumental to the successful execution of our strategic project. We enjoyed working with the diverse and multinational team, delivering results on time and with the required quality.
    Chief Technology OfficerPublic-sector financial institution, Estonia
  • Working with Bonsay Tech was a game-changer for us. Their team delivered a high-quality software solution on time and within budget. Their attention to detail and commitment to our project's success were outstanding.
    Kimmo RytkönenFounder, Income marketplace
  • Bonsay Tech transformed our hiring process. Within weeks, we had access to great developers who seamlessly integrated into our team. Their professionalism and efficiency made a huge difference in meeting our hiring deadlines.
    Ilja LavrovFounder & CEO, Wisercat
  • Bonsay Technologies helped us develop an AI assistant tailored for teachers, enabling personalized learning support. Their deep understanding of AI and practical approach made the entire process smooth and impactful.
    Margo LoorFounder, Kaiq.ai

Separate offer · cost diversification

Need more engineering capacity for less? Add a second market.

Senior developers, QA, data, cloud and support engineers from our Vietnam delivery centre — managed from Europe, under the same EU contract.

Vietnam delivery centre
  • from $4,400gross per month, senior engineer, all-in
  • 30–40%below Central Europe for the same seniority
  • 15 rolesfrom back-end and QA to data, AI and security
  • 5–6 hshared hours with Europe on an EU-aligned shift

Who you will talk to

Two people, one reply within a business day

No account managers in between. The engineers who will do the work join the second call.

  • 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.

    gleb@bonsaytech.comLinkedIn

  • Arseni Mazolevski

    Partnership Manager

    Partnerships, new markets and the engineering network across Europe and Vietnam. Based in Ho Chi Minh City.

    arseni@bonsaytech.comLinkedIn

Next step

Tell us what is broken, missing or slow.

Book 30 minutes. Bring the role, the process or the system. You leave with a first step and a price — or an honest answer that we are not the right fit.

  • No pitch deck, no account manager
  • Engineers who will do the work join the second call
  • NDA before you share anything sensitive

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.