AWS Cloud Engineering.
Serverless-first.

We design, build, and optimize cloud infrastructure on AWS. From architecture to running systems.

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What it takes to succeed on AWS.

Serverless Architecture

Cloud-native systems - built right from the ground up.

We design and implement serverless architectures on AWS - as Infrastructure as Code, production-ready at handover. Scalability, cost efficiency, and future-proofing are baked in from day one.

Multi-Tenant SaaS

Multi-tenancy from day one.

Tenant isolation, scaling, billing, no noisy-neighbor headaches - drawing on real product experience, we design SaaS architectures where multi-tenancy isn't a retrofit.

AI Integration & Automation

AI where it actually adds value.

We help you put AI to work - from intelligent automation and generative AI in your products to AI-powered development that makes your team more productive.

Cloud Strategy & Migration

Existing infrastructure, new direction.

Organically grown setups, tech debt, runaway costs. We analyze your AWS infrastructure, develop a clear strategy, and drive the modernization together - pragmatic and measured.

Landing Zones & Governance

A foundation that grows with you.

Multi-account setup, SSO, permissions, and clean cost separation. Not everything at once - but the right decisions at the right time. That way your foundation scales with you, stays flexible, and makes sure compliance and security don't become an afterthought.

Team Coaching & Sparring

The power-up for your team.

We work alongside your team on real challenges - as coaches and sparring partners, from architecture reviews to implementation, with genuine knowledge transfer.

How We Work

Expertise that delivers - in the project and on your team.

Analysis & Architecture

Every project starts with the right questions. We assess strengths and weaknesses, challenge assumptions, and design an architecture that fits the mission.

Iterative Delivery

Every increment delivers value and is ready to ship. Step by step, new features emerge and the product gets better. Fast feedback helps catch drift early.

Ownership & Knowledge Transfer

We work with your team, bring our experience to the table, and make sure the right decisions get made. Code follows agreed-upon principles, knowledge is shared. In the end, it's your project - not just outsourced, but grown with your team.

Our Stack

Serverless-first. Full-stack. The tools we ship with every day.

LambdaEventBridgeDynamoDBNode.jsAWS CDKReactTypeScriptStep FunctionsAPI GatewayTanStackRoute 53ZodKinesisTailwind CSSTypeSpecLambdaEventBridgeDynamoDBNode.jsAWS CDKReactTypeScriptStep FunctionsAPI GatewayTanStackRoute 53ZodKinesisTailwind CSSTypeSpec
SQSSNSIAMSESS3Identity CenterCloudWatchGitHub ActionsOrganizationsAzure Entra IDControl TowerWAFOrgFormationACMCloudTrailSQSSNSIAMSESS3Identity CenterCloudWatchGitHub ActionsOrganizationsAzure Entra IDControl TowerWAFOrgFormationACMCloudTrail
CloudFrontSecrets ManagerCognitoParameter StoreFargateEC2ElastiCacheGlueBedrockOpenSearchAthenashadcn/uiAuroraAWS ConfigSecurity HubCloudFrontSecrets ManagerCognitoParameter StoreFargateEC2ElastiCacheGlueBedrockOpenSearchAthenashadcn/uiAuroraAWS ConfigSecurity Hub

Personal. Direct. Experienced.

Great cloud engineering comes down to the right people.

Nicolai Lang - Founder & Cloud Architect

Nicolai Lang

Principal Cloud Architect · Founder

20 years of software development. Over a decade on AWS - across projects for mid-market companies and major enterprises, from consulting to product development. WABI is the logical next step - and my answer to what good cloud engineering should look like. When needed, I work with a network of experienced professionals - so WABI scales for larger engagements too.

Certifications & Badges
AWS Certified Cloud PractitionerAWS Solutions Architect AssociateServerless Technology BadgeArchitecting Technology BadgeEvents & Workflows BadgeNetworking Core BadgeCloud Essentials BadgeAWS Partner: Technical AccreditedAWS Partner: Sales Accreditation
Reference Projects
  • Multi-Account Landing Zone & Identity

    An organically grown AWS organization, many accounts, no unified governance. We set up the entire org structure as Infrastructure as Code and introduced centralized identity management.

    OrgFormationSCPsSecurity HubIdentity CenterAzure Entra ID
  • SaaS Loyalty & Couponing Platform

    Multi-channel loyalty and couponing platform for retailers in the SAP ecosystem. Customers earn points, retailers gain data insights and can target offers precisely. Multi-tenant SaaS, event-driven, and API-first.

    LambdaDynamoDBOpenSearchAPI Gateway
  • Corporate VPN with Customer Network Integration

    Employees needed secure access to both the internal network and customer systems - without IP chaos. Implemented as a corporate VPN with site-to-site connectivity and tenant-specific DNS resolution.

    AWS VPNRoute 53 ResolverAzure Entra ID
  • Multi-Tenant Service Console

    Multiple tenants, one interface - each only sees what belongs to them. Built as a service console with micro-frontend architecture and tenant-aware authentication.

    ReactLambdaCognitoCloudFront
  • SAP Customer Data Platform - Integration

    Multiple product teams, organically grown retail IT, SAP CDP as the central customer data platform. We designed and implemented the integration architecture - decoupled, event-driven, and usable across teams.

    API GatewaySQSEventBridge

Let's talk

Whether it's a new initiative, an urgent bottleneck, or a second opinion on your current architecture. A quick conversation will show how we can help.