Custom software development
We build business applications shaped around your actual processes, from the first discovery workshop to a system running in production.
Software engineering partner
Custom software for systems that are not allowed to fail
We design, build and operate business platforms for companies in finance, retail, healthcare and manufacturing. Senior teams, production releases every two weeks, code you can take over at any time.
120+
projects delivered
48
engineers on the team
9
years in business
94%
client retention rate
What we do
Services built around outcomes, not billable hours
From the first discovery workshop to running the platform in production, we cover the entire lifecycle of a digital product.
Legacy system modernisation
We get critical systems moving again — without a full rewrite, without stopping the business and without losing the logic accumulated over years of operation.
Technical consulting and architecture
Independent assessments, documented architecture decisions and support for internal teams that need to get the choice right the first time.
Cloud, DevOps and reliability
Reproducible infrastructure, automated delivery and monitoring that tells you about an incident before your customers do.
Data, analytics and artificial intelligence
We turn data scattered across systems into reports you can trust and, where it is justified, into models that take repetitive decisions.
Dedicated teams and managed support
Engineers allocated entirely to your product and embedded in your processes — plus maintenance with a guaranteed response time for systems already live.
Why NextLevelSoft
Senior engineers, predictable process, full transparency
Senior teams, no middlemen
The team averages 8 years of experience. You talk directly to the people writing the code, not to a layer of account management.
A release every two weeks
Two-week sprints, a working demo on staging or production, and a progress report showing budget spent and remaining.
Code you can take over
The repository, infrastructure-as-code and documentation are yours from day one. No vendor lock-in.
Security and compliance from the start
Static analysis, dependency scanning, audit trails and GDPR procedures are part of our definition of done, not an afterthought.
How we work
A process that removes surprises
Every engagement goes through the same phases, whatever its size. At each step you know what comes next, who is accountable and how the result is measured.
Read more
01
Discovery and assessment
Two to five days of workshops with your business and technical teams. We leave with a map of the flows, the identified risks and an estimate within ±20%.
02
Architecture and delivery plan
We document the target architecture, the major decisions (ADRs), the data model and the release plan. You get a document you could hand to any other vendor.
03
Iterative delivery
Two-week sprints with a working demo. Continuous integration, automated tests and a staging environment identical to production.
04
Launch and stabilisation
Data migration, rollback plan, monitoring and alerting in place. We stay next to your team for the first two weeks after go-live.
05
Operations and evolution
An SLA with a guaranteed response time, monthly performance reports and a quarterly improvement plan.
Results
Projects that moved business metrics
Financial services Read the case study
A lending platform that decides in under three minutes
We replaced an approval process that took two working days with an automated flow that returns a decision in under three minutes, keeping human control where it matters.
−94%
time to decision
+21%
completed applications
99.97%
availability in year one
Technology stack
Mature technology, chosen for the lifetime of the system
We do not chase trends. We choose technology with long-term support, a solid community and an available talent pool, so the system can still be maintained ten years from now.
Backend
PHP 8 / Symfony
Java / Spring Boot
.NET 8
Node.js / NestJS
Go
Python / FastAPI
Frontend
React
TypeScript
Vue 3
Symfony UX / Stimulus
Next.js
Mobile
Kotlin (Android)
Swift (iOS)
React Native
Cloud and infrastructure
AWS
Microsoft Azure
Google Cloud
Kubernetes
Terraform
Data and AI
PostgreSQL
MySQL / MariaDB
Elasticsearch
ClickHouse
Redis
dbt / Airflow
DevOps and automation
GitLab CI / GitHub Actions
Docker
Grafana / Prometheus
OpenTelemetry
Integrations
REST / OpenAPI
GraphQL
Apache Kafka
RabbitMQ
SAP / ERP connectors
Industries
We know the context, not just the technology
Regulations, domain integrations and business flows we have already met in dozens of projects.
Financial services
Lending platforms, customer portals and banking integrations, built for full traceability and high availability.
Retail and e-commerce
Sales platforms, inventory management systems and integrations between physical stores and online channels, sized for traffic peaks.
Healthcare
Scheduling systems, electronic health records and telemedicine platforms, with strict protection of health data.
Logistics and transport
Route planning systems, shipment tracking and warehouse management, used daily by hundreds of operators.
Manufacturing
Production tracking systems, predictive maintenance and integrations between the shop floor and management systems.
Public sector and utilities
Citizen service portals and internal management platforms, built for accessibility and transparency.
References
What our clients say
We worked with four vendors before. NextLevelSoft is the first that told us, in week two, which parts of our original requirements made no sense. It saved us roughly three months of pointless work.
Black Friday was the first campaign in five years where I did not have to sit by the phone. The system held, and the capacity reports we had received in advance turned out to be accurate.
They spent two days in our call centre, timing what the operators actually do, before drawing the first interface. It shows in the result: training a new operator now takes an hour, not a week.
Insights
Engineering notes from our projects
Architecture
8 min read
Why full rewrites fail, and what we do instead
Of nine full-rewrite projects we were called into as reinforcements, seven had already overrun budget by more than 60%. Here is the pattern that repeats, and the alternative that works.
Delivery
6 min read
Estimates are not promises. How we communicate uncertainty
A single-number estimate hides everything we do not know yet. Here is how we report uncertainty so clients can make decisions rather than just wait.
Cloud
7 min read
Five reasons your cloud bill grows for no reason
We analysed the cloud bills of eleven clients. The same five problems appeared in at least eight of them, and fixing them cut costs by 20–40%.
Got a system to build — or to rescue?
Book a 30-minute call with an architect, not a salesperson. We will tell you honestly whether we can help, how long it would take and what it would cost.