System Integration & API Engineering

Industrial Research
& Innovations

Our research projects cover areas such as artificial intelligence, data analytics, cybersecurity, and workflow innovations in line with RIS3 2021+ priorities.

About this service

Connected systems are the backbone of a reliable digital ecosystem. At LEXANTE Advisory we design and implement APIs, integrations and data flows so your CRM, ERP, DMS, billing, data warehouse and AI services work together seamlessly. We build on secure standards, scalable architecture and observability, so integration stays maintainable, auditable and ready for growth.

Integrations without blind spots

API strategy & design: We define contracts, versioning, limits and security policies for long-term sustainability.
Data flow orchestration: ETL/ELT and event-driven patterns for reliable synchronization and data quality.
Governance & monitoring: Service catalog, observability, audit logs and access management across integrations.

From integration to business value

Integration is not just technical plumbing. It enables a single source of truth, removes manual steps and accelerates decisions. We design for reliability, error recovery and clear SLAs so integrations become a business accelerator, not a bottleneck.

Technologies & approach

API standards: REST, GraphQL, gRPC; OpenAPI/Swagger, JSON Schema, versioning, rate limiting
Integration & messaging: Kafka, RabbitMQ, Azure Service Bus; event sourcing, outbox pattern
Data flows & ETL/ELT: Airflow, dbt, Fivetran; CDC, batch/stream processing, data quality
Security & IAM: OAuth2/OIDC, mTLS, WAF, secrets management (Vault/Key Vault), zero-trust principles
Observability: Centralized logs, metrics & tracing; SLI/SLO, alerting, auditability

Use cases

CRM ↔ ERP sync:Customers, orders, invoices and inventory without discrepancies.
AI & document services:Connect RAG/NLP to DMS with secure access and full audit.
Data warehouse & BI:Automated pipelines to Snowflake/BigQuery and Power BI reporting.
Partner integrations:API gateways, sandboxes and test environments for vendors.

Client benefits

Single source of truth:Consistent, trustworthy data across apps and teams.
Speed of change:Modular architecture to add services without core rewrites.
Fewer errors:Automation, validations and idempotent flows reduce manual work.
Security & audit:Managed access, logging and regulatory compliance.

Our process

We map systems, data flows, APIs and manual steps. We identify risks, duplicates and bottlenecks, then define goals, SLA/SLO and priorities by business impact and security.

We design sync/async or event-driven architecture, contracts and error patterns. Versioning & compatibility policies keep changes safe and predictable.

We build services, connectors and transformations. We automate contract tests, e2e scenarios and synthetic flow tests, with safe test envs and datasets.

CI/CD, artifact signing and vulnerability scanning; monitoring, alerts and recovery playbooks. We run operations with SRE principles and full access/change audit.

We manage the API catalog, documentation and version lifecycle. We track data quality, costs and latency, and iteratively optimize flows and extend integrations as business evolves.

Partnerships & ecosystem

We collaborate with internal teams and external vendors so integrations make sense organization-wide. We leverage ecosystems like Salesforce, Microsoft 365, Atlassian, SAP and modern data platforms for proven connectors and standards.

Publications & innovation

We share patterns and lessons learned: event-driven integrations, contract testing, API governance and observability approaches — aiming for sustainable architecture while reducing complexity.

FAQ

Frequently asked questions

Yes. We define integration interfaces, responsibilities and test scenarios so collaboration stays smooth and transparent.

For a small scope, point-to-point can work. As the number of systems grows, we recommend an integration layer (API gateway, event bus) for scalability, governance and easier change management.

We use mTLS, OAuth2/OIDC, encryption at rest/in transit and least-privilege policies. All accesses are audited and logged with alerting on anomalies.

We enforce validations, checksums, idempotency and data quality monitoring, with alerts for anomalies or delays and clear recovery procedures.

Depends on API readiness and priorities. A first production “slice” is typically feasible within a few weeks including testing.