Software takeover · fixed-price assessment · EU contract

Your developer left. The system still has to run.

We take over business-critical custom software that nobody on your side fully understands anymore: assess it in 10 working days, make it stable, and keep it running under a monthly agreement.

Access under your NDA. No commitment beyond the assessment. You keep the report whatever you decide.

Assessment log · example · 10 working days
  1. Day 1Read access to repo, servers, DB · interviews booked
  2. Day 2backup.restore_test() · no restorable backup → fixed
  3. Day 3Deploy from clean machine · 2 undocumented steps found
  4. Day 5deps.audit() · 14 outdated · 3 known CVEs
  5. Day 7Credentials map · 6 services, 2 in ex-developer's name
  6. Day 10Readout · risk register, plan, fixed price for step 2
Illustrative · findings vary by system · every item written down
from access to a written assessment
10 days
fixed price for the assessment
€5–10k
named engineer who knows your system
1 lead
standard incident response; 24/7 by agreement
1 day

When companies call us

Usually one of these eight situations. Often two at once.

  • 01

    The only developer resigned

    and the knowledge walked out of the door

  • 02

    The vendor disappeared

    invoices paid, tickets open, nobody answers

  • 03

    Every release breaks something

    the current vendor keeps missing deadlines

  • 04

    Nobody can explain how it works

    no documentation, no tests

  • 05

    The system is unstable

    outages, slow pages, data errors

  • 06

    You inherited it

    through an acquisition, and need to know what you bought

  • 07

    It needs modernisation

    old framework, unsupported libraries

  • 08

    You want it out of the house

    but cannot switch it off

60-second stack check

Is your system running on software that no longer gets security fixes?

Tick what you run. Dates are the end of official security support from each vendor.

Languages
Runtimes
Frameworks & CMS
Databases & OS

no security patches ends within 12 months supported

Your stack check

Tick what your system runs on.

Software past its end of life gets no more security fixes. An unpatched framework is an open door, not a theoretical risk.

Discuss your stack

How a takeover works

Three steps. Stop after any of them.

Each step has its own price and its own deliverable. Nothing is bundled, nothing is hidden in the monthly fee.

Rules we work by

  • Backups and restore are verified before anything else is touched
  • Every change goes through version control and a documented deploy
  • Credentials move into your name, never ours
  • Risky changes are agreed with you first, in writing
  • Everything we learn goes into documentation you keep
  1. 1

    Takeover assessment10 working days · €5–10k

    We read the code, infrastructure and data, talk to whoever still knows anything, and write down what the system does, where it will break next and what it costs to keep alive.

  2. 2

    Stabilisation4–12 weeks · €20–80k

    The fixes from the assessment, in order of risk: backups and restore, deployment from a clean machine, monitoring, critical bugs, security patches, documentation.

  3. 3

    Ongoing engineeringmonthly · €3–8k

    A named lead engineer, agreed hours for changes and a response time for incidents: one business day as standard, faster or 24/7 by agreement.

The assessment

A document you can act on — with us or with anyone else

  • System map

    Components, integrations, data flows, external services and who pays for them.

  • Risk register

    What will break next, how likely, how bad, and what it costs to prevent.

  • Operational check

    Can it be deployed from scratch? Are backups restorable? Who holds the credentials?

  • Code and dependency review

    Outdated libraries, known vulnerabilities, parts nobody should touch without tests.

  • Plan and price

    A stabilisation plan in order of risk, a fixed price for step 2 and a monthly figure for step 3.

PHPJavaNode.jsPythonGoReact / AngularAWS / KubernetesWooCommerce / Magento

Proof, not promises

What we have done before

  • 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

FAQ

Questions we hear first

Do we have to commit to the whole takeover?

No. Each step has its own price and deliverable. You can stop after the assessment and keep the report — it is written so that any competent team can act on it.

Which technologies do you take over?

PHP, Java, Node.js, Python, Go, React and Angular front ends, AWS and Kubernetes infrastructure, WooCommerce and Magento shops. If it is something rarer, we tell you on the first call whether we have the people.

What do you need from us to start?

Read access to the repository, servers and any documentation (after we sign your NDA), one or two hours with the people who use the system daily, whatever is left from the previous developer, and a decision-maker for a 60-minute readout.

Can you modernise the system instead of just keeping it alive?

Yes, step by step: an API layer in front of the old code, the most fragile parts replaced first, data migrated with checks. Big-bang rewrites are rarely the cheapest path.

What about security and compliance?

Security patches and dependency updates are part of stabilisation. If you need an outside view first, start with our external security assessment.

Next step

Send us the system.

Describe it in a few sentences on a 30-minute call. No access needed yet. If it fits, you get a fixed price for the assessment.

  • NDA signed before any access
  • Fixed price for the 10-day assessment
  • You keep the report whatever you decide

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.