Viacheslav Kostin
CEO WislaCode Solution
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SDK Integration Services
Bring advanced features to market faster. We implement secure, well‑behaved SDKs that expand your app’s capabilities without compromising speed or stability.
Services we offer in SDK integration
We handle both high‑stakes SDKs – secure payments (3‑D Secure, tokenisation), identity, voice/video, messaging and lightweight integrations such as analytics, attribution, and in‑app engagement.
All SDKs are integrated with safe authentication, signed callbacks, and full observability. You get predictable delivery, reliable performance, and lower operational risk compared with building from scratch.
Implementation and setup (iOS, Android, Web)
Clean integration of third‑party SDKs into new or existing apps. Dependency management, initialisation order, permission prompts, secure key storage, background modes, and robust error handling. We profile start‑up time, memory, and frame stability to ensure the SDK behaves natively.
Cross‑platform bridging
Thin, typed bridges to native SDKs exposing only required features. Parity tests keep iOS and Android aligned, while event batching and guarded async work maintain UX performance.
Custom SDK design and build
We build your own SDK with clear APIs, semantic versioning, and a minimal footprint. Thread‑safe, testable modules for iOS and Android, optional React Native wrappers, documentation, and sandbox environments for partners.
Upgrade and migration of legacy SDKs
Replace risky SDKs with modern alternatives using feature flags, compatibility layers, staged roll‑outs, and rollback paths. Crash/ANR monitoring and observability detect issues early.
Core capabilities in SDK integration
Integration of payments, identity, maps, messaging, and analytics SDKs via CocoaPods, Swift Package Manager, or Gradle. Strict version control, stable behaviour under poor connectivity, robust permission and background handling.
SCA‑ready cards and wallets (3‑D Secure, tokenisation) and OAuth/OIDC authentication. Token management, fraud tools, webhooks, PCI DSS and PSD2 compliance, full reconciliation.
Consent‑driven setup (GDPR/CCPA), event taxonomy, sampling, and offline batching. Multi‑SDK coordination prevents duplicate events and preserves app performance.
Custom modules and plugins exposing native SDKs to cross‑platform apps. CI/CD compiles and tests bindings per platform, preventing regressions from SDK updates.
Delivery process
Define objectives, choose SDKs, plan measurable outcomes and risk.
Planning
Analysis
Verify functionality, security, and performance across OS versions and devices.
Testing
Implement integrations with predictable APIs and a native feel.
Design
Development
Stage roll‑outs, enable telemetry, maintain a stable release cadence and developer documentation.
Launch
Support
Case: Large‑scale SDK integration with rapid adoption
A client merged multiple standalone apps into one – combining card controls, instant transfers, onboarding, e‑government access, and telco integration.
We proposed a modular native architecture with feature flags to run parallel workstreams and a CI/CD pipeline for builds, tests, and staged roll‑outs. Integrations included eID, video‑KYC with liveness, and a telco gateway bridging finance and mobile services.
Result: first production release in nine months, 100k+ users in the first month, 1.5M+ within a year, weekly updates, and zero downtime.
Why WislaCode?
We implement SDKs across payments, identity, analytics, communications and maps. Our vendor‑neutral stance means the solution serves your product, not a single provider’s roadmap.
Vendor‑agnostic expertise
Version pinning, feature flags, canary releases and observability keep updates safe. Contract tests and rollback plans make SDK upgrades routine – not stressful.
Release engineering that scales
Least‑privilege access, encrypted data paths, audited actions and safe storage of secrets are standard. We align with GDPR, PCI DSS and PSD2/SCA, with clear evidence in CI/CD.
Security by default
Engage an end‑to‑end team or hire SDK integration developers to augment your squad. Transparent KPIs, documentation and knowledge transfer ensure lasting ownership.
Flexible engagement
FAQ about SDK integration
Vendor docs are useful, but complex apps need more than sample code. Conflicts between SDKs, permission timing, background behaviour and performance budgets demand experience. We provide adapters, versioning strategy, test coverage and monitoring so integrations don’t degrade UX or security. If you already have engineers, hire SDK integration developers from us to accelerate critical paths while keeping knowledge in‑house.
We separate concerns: authentication via OAuth/OIDC with short‑lived tokens, payments with SCA‑ready flows and robust error handling. Sensitive data never touches your app when not required; card data is tokenised and routed to PCI‑compliant providers. Webhooks are verified and idempotent. We log audit events, enforce least‑privilege keys, and include threat modelling plus pen tests before launch.
We pin versions, document upgrade paths and use feature flags for risky changes. CI/CD runs UI tests on device farms, contract tests for callbacks and performance checks against ANR/crash budgets. Rollouts are staged with canaries and observability dashboards. If telemetry degrades, we halt or roll back quickly. This keeps releases predictable across iOS and Android without freezing the roadmap.
Yes. We build thin native modules/plugins that bridge only what’s needed, avoid heavy JS <-> native chatter and batch events. Permission flows and background tasks remain native. We profile start‑up time, memory and jank, then optimise: lazy initialise, defer non‑critical work, and offload to background threads. End‑to‑end tests validate the bridge so upgrades don’t break UX.
We start with consent and data minimisation. An event taxonomy defines what’s tracked and where it’s routed. A lightweight router prevents duplicate events and enforces sampling or offline batching. PII is masked; IDs are consistent but privacy‑safe. Users can change consent, and retention rules are honoured. This yields reliable insight without breaching GDPR or blowing performance budgets.
Discovery and selection: 1-2 weeks. Prototyping and risk spikes: 1-3 weeks. Implementation of core journeys: 3-6 weeks per SDK (often in parallel). Hardening and staged release: 2-3 weeks. Timelines vary by platform mix, vendor maturity and compliance. We provide a clear plan, KPIs and rollout strategy, and you can scale capacity by hiring SDK integration developers from our team when needed.
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.
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.