We build, launch, and modernize software products.
Talvex Solutions is a software engineering company based in Ukraine, working with companies across the EU and US. We add AI capabilities to existing products, build SaaS platforms from the ground up, and take care of backend systems that need modernizing.
Three areas we focus on, plus the supporting capabilities most projects need along the way.
AI & LLM integration
Adding AI features to an existing product takes more than an API key. The real work is getting from a promising demo to something accurate, fast, and cost-controlled in production.
Timeline
Typically 4–8 weeks to a first AI feature integrated into your product, behind a feature flag, with evaluations running in CI.
Agent workflows with tool use and human review where it matters
Model selection and routing across providers
An evaluation set with golden data, built before tuning starts
Cost modeling, caching, and monthly spend limits
Tracing and monitoring for every model call in production
The hard part
We build the evaluation set before tuning anything. Without one, nobody can tell whether a prompt change made the product better or worse — with one, quality is measurable, and it stays in your CI after we're done.
SaaS development from zero
Getting from a validated idea to first paying customers, without spending a year building infrastructure you don't need yet.
Timeline
Typically 10–16 weeks from kickoff to a production MVP with billing in place.
Typical stack
TypeScript
Next.js
Node.js
Go
PostgreSQL
Stripe
AWS / GCP
Terraform
What's included
Discovery with a written scope — including what we suggest leaving out
Architecture sized for your first customers, with room to grow
Authentication, roles, billing, and an admin panel from the start
CI/CD, staging, and production infrastructure as code
Product analytics from the first release
Support through onboarding your first customers
The hard part
The most common MVP mistake is building for imaginary scale — complex infrastructure before the tenth customer. We write down what we're deliberately not building and keep the architecture simple until real usage justifies more.
Backend & legacy modernization
When the system that got you here starts slowing every release: the original authors have moved on, deploys feel risky, and estimates keep growing.
Timeline
2–3 weeks for the audit and plan. Migrations then proceed in increments you can pause after any step.
Typical stack
Node.js
Go
Python
PHP / .NET takeovers
PostgreSQL
Kafka
Kubernetes
Terraform
AWS
What's included
A codebase and infrastructure audit with a written report
A target architecture and a migration plan in small, safe steps
Gradual migrations behind a compatibility layer
Zero-downtime data migrations with tested rollback
Performance work based on production profiling
Monitoring, alerting, and infrastructure as code along the way
Takeover of codebases without documentation or handover
The hard part
We avoid big-bang rewrites. Every step ships behind a compatibility layer with a rehearsed rollback, so the existing system keeps running while the new one proves itself in production.
Supporting capabilities
Frontend (React, Next.js)
Mobile (React Native, Flutter)
DevOps & SRE
Third-party integrations
QA & test automation
Ongoing support & maintenance
How we work
Five steps, each described by what you receive at the end of it.
1 / 5
Discovery
A written problem statement, the main risks, and a recommendation on scope — including what we think you shouldn't build yet.
2 / 5
Architecture & estimate
An architecture document detailed enough to hand to any vendor, and an estimate with its assumptions written down. The document is yours either way.
3 / 5
Two-week sprints
Working software on a staging environment every second Friday — a live demo you can click through, in a repository you own.
4 / 5
QA, docs & handover
A tested release, documentation, runbooks, and recorded handover sessions, so your team can operate the system independently.
5 / 5
Support & iteration
A defined support window with agreed response times — handled by the same engineers who built the system.
A live demo every sprint, on staging, from the first weeks
Direct Slack access to the engineers writing the code
Code in your repository from the first commit
Decisions that affect cost or dates are agreed in writing first
Ways of working together
The right model depends on how well the scope is known and how much engineering leadership you have in-house.
Dedicated team
A good fit when you have a product roadmap beyond one quarter and want a stable team that builds up context over time.
What you get
A fixed group of named engineers
A tech lead responsible for delivery
Sprint planning, demos, and retrospectives run by the team
Honest input on the roadmap, not just execution
Billing
Monthly, based on team composition, in EUR or USD
Minimum
From 3 months
Notice
30 days written notice, with a structured handover
Fixed-scope project
A good fit when the scope can be written down: an MVP, a migration, an integration. Discovery comes first so the estimate is honest.
What you get
Paid discovery resulting in an architecture document and estimate
A price and date we commit to in the contract
Assumptions in writing — if one changes, we revisit that item only
QA, documentation, and handover included in the price
Billing
By milestone: payment tied to accepted deliverables
Minimum
Priced after discovery
Notice
Cancel at any milestone; you keep everything paid for
Staff augmentation
A good fit when you have strong engineering leadership in-house and need experienced engineers inside your existing process.
What you get
Senior engineers you interview before they start
They work in your repositories, tools, and meetings
A two-week evaluation period with a straightforward replacement
Engagements from a single engineer upward
Billing
Monthly per engineer, with timesheet transparency
Minimum
From 1 month
Notice
14 days written notice per engineer
Not sure if we're the right fit?
Tell us what you're building and we'll give you an honest answer — including when the honest answer is that you don't need us.
Founder · Principal Solutions Architect | AI Engineer
10+ years of enterprise development
Talvex Solutions is founder-led: every project is architected and delivered by an engineer with over ten years of enterprise development behind him — someone who has shipped products, run migrations, and carried systems in production, not just written code for them.
We work with founders and engineering leaders in the EU and US who know what a good result looks like and want their project owned end to end. If we don't think we're the right fit, you'll hear it on the first call.
Working with EU & US clients
We're based in Ukraine and work with EU and US companies daily. Here's how the practical side works — time zones, contracts, payments, data, and continuity — so your legal and finance teams have answers up front.
Time zones & communication
Ukraine is one hour ahead of Central Europe, so EU clients share almost the entire working day with us. For the US East Coast, our afternoon overlaps with your morning; for West Coast clients we schedule meetings in your morning hours.
A fixed meeting cadence agreed in the contract: sprint demos, weekly status, and standups at times that suit you
Written, async-first communication — decisions live in your tracker, not in someone's memory
Responses within the same business day
Contracts
We work under a Master Service Agreement with a Statement of Work per project. Governing law and jurisdiction are your choice — an EU jurisdiction or a US state — with an arbitration clause for a defined dispute path.
We sign your NDA, or provide ours, before any technical discussion.
Intellectual property
All intellectual property transfers fully and exclusively to you upon payment, under work-for-hire terms in the MSA. No license-back, no reuse rights, no shared ownership.
In practice there's little to transfer at the end: the code lives in your repository from the first commit, under your organization and your access controls.
Payments
We invoice in EUR or USD by standard bank transfer to a Ukrainian entity, with Wise or Payoneer as alternatives if your finance team prefers. Standard net payment terms, no setup fees.
With the first invoice we provide the paperwork your finance team will ask for: certificate of incorporation, tax residency certificate, bank confirmation, and a W-8BEN-E for US clients.
Data protection
For projects involving personal data we act as a data processor under GDPR, with a Data Processing Agreement available at signing. Production data stays in your infrastructure and your region; we work against staging environments and anonymized data wherever the architecture allows.
Our subprocessor list is short and documented, and changes only with notice to you. We complete security questionnaires as a normal part of onboarding.
Security
Access is role-based and granted per project — the minimum needed, revoked the day someone rolls off. All changes reach production through reviewed pull requests.
Secrets live in a vault, never in code or chat. Work happens on encrypted, managed devices, and production credentials never touch personal machines.
Business continuity
The team is distributed across several locations with redundant power and connectivity, and no project depends on a single person or place. Documentation and handover notes are part of everyday work, not something written in a crisis.
We have operated continuously under these arrangements since 2022, without changing a delivery commitment because of them.
Technology
Tools we use in production today. If something isn't on this list, we'll say so directly.
AI & Data
Claude API
OpenAI API
LangGraph
pgvector
Qdrant
Langfuse
Python
Airflow
dbt
Backend
Node.js
TypeScript
Go
NestJS
PostgreSQL
Redis
Kafka
gRPC
REST & GraphQL
Frontend
React
Next.js
TypeScript
Tailwind CSS
TanStack Query
Playwright
Mobile
React Native
Flutter
Swift
Kotlin
Cloud & DevOps
AWS
GCP
Kubernetes
Terraform
Docker
GitHub Actions
Grafana
Prometheus
OpenTelemetry
Pricing
We're a mid-market company: we don't compete with the lowest bids, and we cost less than large Western agencies. What we aim for is that the estimate you get is the amount you pay.
Discovery is a paid, fixed-price phase
It runs one to three weeks and produces the architecture document and the estimate. The document is yours regardless of whether we continue together.
Concrete numbers on the first call
We'll walk you through our rate range and typical monthly costs for each engagement model — before you've committed to anything.
No costs you haven't approved
The contract states the price and its assumptions. Any change goes through a written change request with its own estimate, approved by you before work starts.
What affects the cost
Adds to the cost
Regulated data or formal compliance requirements
Hard launch dates that compress the schedule
Integrations with undocumented third-party systems
Extended support windows
Brings it down
A written spec your own team has reviewed
A technical decision-maker on your side who's available
Flexibility in how the work is sequenced
Existing CI/CD and staging environments
Frequently asked questions
Every engagement has a tech lead who is responsible for delivery, and the contract names concrete artifacts on a fixed cadence: a demo on staging every second Friday and a written status update every week. Your involvement is decisions and priorities, not chasing tasks.
You interview every engineer assigned to your project before they start — your questions, your bar. The people you meet are the people who write the code, and any change to the team needs your sign-off. The first two weeks are an evaluation period with a straightforward replacement if it isn't working.
EU clients share almost the full working day with us — Ukraine is one hour ahead of Central Europe. For the US East Coast, our afternoons are your mornings, which is when we schedule demos and standups. Day to day, most communication is written and asynchronous, so little depends on being online at the same moment.
It's routine. An MSA plus per-project SOWs, governed by an EU jurisdiction or a US state at your choice. IP transfers fully to you on payment under work-for-hire terms, and the code is in your repository from the first commit anyway. Invoicing is a standard bank transfer in EUR or USD, and we send the vendor onboarding paperwork with the first invoice.
The team is distributed across several locations with redundant power and connectivity, and no project depends on a single person or place. Documentation and handover notes are maintained as part of normal work. We've operated continuously under these arrangements since 2022 without missing a delivery commitment because of them.
The contract states the price, what's included, and the assumptions behind it. Anything that would change the number requires a written change request with its own estimate, approved by you before work starts. QA, documentation, and handover are part of the price, not extras.
Yes — including codebases with no documentation and no handover available. We start with a two-to-three-week audit that produces a written report and a risk-ranked plan, so you know the real state of the system before committing to anything bigger.
Tell us, and we'll replace them at our cost, with an overlap period so context isn't lost. The first two weeks of any engineer's engagement are an explicit evaluation window. One mismatch shouldn't become your management problem.
Through written change requests: each gets an estimate of its impact on cost and dates, and you decide whether it goes in now, later, or instead of something else. Small clarifications flow inside the sprint without ceremony — the process exists for changes that move the number.
The engineers who write the code, as part of the definition of done. Test coverage expectations are set in the architecture document and enforced in CI, and documentation is a deliverable at every milestone — not something produced at the end.
Tell us about your project
We reply within one business day. The first call is a free 30-minute conversation with an engineer — not a sales presentation.
If you'd prefer to talk under NDA, mention it in the message and we'll sign yours before the call.