WislaCode

Custom Web Solutions Development

Empower your business with tailored web solutions that drive results and innovation.

The Value of Custom Web Solutions

WislaCode is all about building unique web solutions that match your business needs exactly. Our custom web development services aim to provide high‑performance, scalable, and secure platforms. These platforms are built to support growth and spark innovation. From concept to launch, we provide strategic, client‑centred solutions that drive measurable outcomes.

Platforms Design and Prototyping

We turn ideas into evidence by moving from low‑fidelity sketches to high‑fidelity prototypes that simulate core journeys, reduce ambiguity, and surface usability issues early. You get clear, testable artefacts that align stakeholders and de‑risk delivery before any heavy build.

Web Solutions Strategy

We shape a pragmatic roadmap that links business goals to measurable results. Expect prioritised backlogs, technical options, risk registers, and a sensible release plan. The strategy anchors delivery to outcomes and keeps scope lean and purposeful.

Build Web Solutions and Apps

We design custom web solutions and apps. Our approach includes modern stacks, modular architecture, and clean contracts. From PWAs and SPAs to complex platforms, we focus on security, performance, and maintainability so you can scale without friction.

Testing and QA

We confirm what matters: functionality, performance, accessibility, and compatibility. Automated checks sit alongside exploratory testing, with CI/CD pipelines to catch regressions early. The result is a dependable release that feels fast, safe, and consistent.

Core Capabilities in Custom Web Development

Core Capabilities in Custom Web Development

Our development process begins with a thorough understanding of your goals. We create and build custom web solutions. These solutions tackle your challenges, improve operations, and boost your online presence.
We build with future growth in mind. Our custom web development keeps your platform efficient and adaptable. It handles new features, increased traffic, and scaling operations.
WislaCode excels at integrating third‑party APIs, tools, and services into your custom web solutions. This enhances functionality, improves user experience, and ensures compatibility with existing systems.
We prioritise performance, focusing on fast load times, efficient resource usage, and smooth navigation. These elements are critical for user satisfaction and commercial success.

Viacheslav Kostin
CEO WislaCode Solution

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How Are Custom Web Solutions Developed Step by Step?

We analyse your business objectives to develop web solutions that not only meet current needs but also support future ambitions.
Planning
Analysis
Our development process includes rigorous testing for functionality, performance, and security, ensuring that your custom web solution is reliable, scalable, and ready to perform.
Testing
UX Research
From intuitive interfaces to robust back‑end systems, our custom web development services deliver a competitive edge in the digital landscape.
Design
Development
WislaCode ensures comprehensive testing and a smooth, successful product launch.
Launch
Support
Turning car leasing into a seamless digital journey

A client in FinTech/Automobile asked us to reimagine classic car leasing online. We delivered a bespoke web solution where customers can search and book vehicles, submit applications, and manage contracts, invoices, and documents in one place.

Using Java, Spring, JavaScript, and React, we shipped the first release in six months.

The new platform streamlined operations and reduced both human and financial overheads, proving that a well‑engineered, tailor‑made web app can transform efficiency and customer experience.

Why WislaCode?
We align technical choices with commercial outcomes, using lean scopes, measurable KPIs, and delivery cadences that minimise waste and maximise impact.
Business‑first engineering
We build performance optimisation, accessibility, and secure data handling into our process. You get a stable, resilient foundation – no costly retrofits later.
Security by default
We build scalable web platforms with clear interfaces, API integrations, and modular components, so adding features or handling more traffic remains straightforward.
Modern architecture
Expect transparent documentation, onboarding for your team, and ongoing support options. We make ownership simple and future changes predictable.
Lasting partnership
Some Customer Reviews
WislaCode specialists and web developers are dedicated to each project. They work hard to deliver results quickly.
Aleksei Malenkin, $lana (Monetech)
5

WislaCode specialists quickly synchronised and worked with the second team involved in developing our solution.
As a result, having started development from scratch, we came to the expected result quickly. The first users went to the application after 5 months.
Read the full review

FAQ About Custom Web Solutions

Off‑the‑shelf tools are quick to start, but often force your processes to fit their templates. Bespoke web solutions are designed around how your business actually operates, solving specific pain points with the right data flows, permissions, and integrations. With a custom web app you control the backlog, performance budget, and security posture; you’re not constrained by plugin limits or vendor roadmaps. This typically yields cleaner UX, faster task completion, and better operational efficiency. It also reduces tool sprawl because integrations (payments, CRMs, ERPs, telematics, identity providers) are implemented as first‑class citizens. Off‑the‑shelf can be ideal for early validation, but once you need differentiated experience, scalable architecture, and predictable TCO, tailor‑made web solutions pay back through higher conversion, lower support load, and fewer workarounds. We begin with discovery to identify outcomes. Then, we create an implementation plan that balances quick results with lasting maintenance. You keep IP, data portability, and the freedom to evolve without being boxed in.
We design for scale from day one: modular services, efficient data access, and caching strategies aligned to usage patterns. Front‑end performance focuses on critical rendering paths, code splitting, and image strategy, while back‑end performance uses connection pooling, async processing, and resource isolation for noisy workloads. We baseline the “golden journeys” early – search, checkout, onboarding and set SLOs for response times, error budgets, and throughput. Load testing and observability (metrics, tracing, logs) are wired into CI/CD so regressions are caught before release. For traffic spikes, we plan capacity with autoscaling and use CDN edge where appropriate. Database growth is handled through indexing hygiene, pagination, and, when needed, read replicas or sharding strategies. Crucially, performance is treated as a product feature: we iterate on real telemetry, not assumptions. This yields web apps that feel fast, remain stable under pressure, and scale predictably as your audience and feature set expand.
Security is integrated into the lifecycle rather than bolted on at the end. We apply least‑privilege access, secrets management, and safe data handling from the outset, with threat modelling for high‑risk areas. Code quality gates cover dependency checks, static analysis, and container scanning. Pipelines ensure policies are followed for builds and deployments. We implement secure authentication and authorisation patterns, audit trails for sensitive actions, and data minimisation to reduce blast radius. For compliance, we document processing activities, consent flows, and retention rules to support audits. Encryption in transit and at rest is standard, while key management and rotation are automated. Penetration testing or targeted security reviews are scheduled before major releases. This way, your bespoke web solution ships on time with a security posture that can harden further as the platform scales, meeting internal policies and external expectations without compromising delivery speed.
We start with a concise discovery phase: goals, constraints, assumptions, and measurable outcomes. From there we outline a lean scope that proves value fast – usually a “thin slice” across UX, core logic, and integrations. Work is split into short iterations with demoable progress and acceptance criteria per story. A clear definition of done includes performance baselines, accessibility checks, and test coverage targets. Scope is controlled through a living backlog and evidence‑first decision‑making: if a task doesn’t move a metric or unblock a dependency, it waits. We keep risk visible via a register and address the riskiest assumptions early. For the first release, we prioritise high‑impact journeys and must‑have integrations, then plan a follow‑up cadence for enhancements. This approach shortens time‑to‑value and ensures every increment advances the product, not just the codebase.
We start with contract clarity. This includes authentication models, payload formats, idempotency, rate limits, and error semantics. Where sandboxes exist, we validate early; where they don’t, we use mock services and record‑replay test data to avoid delays. We design adapters that encapsulate vendor quirks, keeping your core domain clean and portable. For legacy systems, we map constraints, add resilience patterns (retries, circuit breakers), and schedule data migrations with reversible steps. Monitoring tracks call latency, error classes, and back‑pressure so issues are visible, not mysterious. Documentation covers field mapping and edge cases, making future changes straightforward. This disciplined approach reduces integration risk, speeds up troubleshooting, and prevents vendor coupling from leaking across your codebase – key to maintainable, scalable web solutions.
You keep ownership of the code, IP, and environments. We offer support options that include incident response SLAs, dependency updates, security patching, and minor enhancements. A post‑launch optimisation window addresses telemetry‑driven improvements: performance tuning, UX friction fixes, and backlog items parked for later. We maintain a release cadence aligned with your team’s capacity, using feature flags and progressive rollouts to reduce risk. Knowledge transfer is baked in – runbooks, architecture notes, and workshops, so internal teams can operate confidently. We help you grow by adding new integrations, improving data models, and keeping the platform up to date without major rewrites. The goal is simple: a bespoke web app that remains reliable, secure, and easy to extend as your needs change.

Viacheslav Kostin

Viacheslav Kostin, CEO

20+ years of experience in managerial positions in IT and banking.

Viacheslav Kostin, CEO
Previous roles: CEO in IT, Director of Strategy and Marketing in Banking, Curator of Holding Banks, Head of Products and Project Office.
Education: MBA for Executives at IMD (Switzerland), Leading Digital Business Transformation (IMD). Provides consulting in strategy and digital transformation.

Pahomov

Vasil Pahomov, CTO

20+ years of experience as a developer, analyst, and solutions architect.

Vasil Pahomov, CTO
Designs resilient, high-load systems with multiple integrations for banks and financial institutions. Expertise in distributed storage and microservices architecture.
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Let's discuss your project's evolution.
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Let's discuss your project's evolution.
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