Engineering notes for SaaS & fintech teams
Architecture, MVP delivery, and production practices from building financial and SaaS systems.
- 21 min read
Workload Identity for Cloud-Native Systems: SPIFFE, SPIRE, mTLS, and Replacing Static Secrets
A practical guide to workload identity with SPIFFE, SPIRE, mTLS, attestation, trust domains, cloud federation, authorization, rotation, and migration from static secrets.
Workload IdentitySPIFFESPIREZero Trust - 21 min read
Software Supply Chain Security for AI-Accelerated Teams: SBOM, SLSA, Provenance, and CI/CD Hardening
A practical guide to software supply chain security for AI-accelerated teams: SBOM, SLSA provenance, signing, isolated builds, CI/CD hardening, and admission policy.
Software Supply Chain SecuritySBOMSLSADevSecOps - 21 min read
Data Sovereignty Architecture for SaaS and AI on AWS: Residency, Access, Encryption, and Resilience
A practical guide to data sovereignty architecture for SaaS and AI on AWS: residency, regional data planes, access, encryption, recovery, portability, and continuous evidence.
Data SovereigntyAWS ArchitectureSaaSAI Security - 21 min read
Event-Driven Architecture on AWS: EventBridge, SQS, Kafka, and Reliable Integration Patterns
A practical guide to event-driven architecture on AWS with EventBridge, SQS, Kafka, transactional outbox, idempotency, ordering, retries, replay, and observability.
Event-Driven ArchitectureAmazon EventBridgeAWSApache Kafka - 18 min read
Internal Developer Platforms: How to Build Self-Service Infrastructure Developers Actually Use
A practical guide to internal developer platforms, golden paths, self-service infrastructure, Backstage, policy, observability, FinOps, AI agents, and platform adoption.
Platform EngineeringInternal Developer PlatformDevOpsSelf-Service Infrastructure - 21 min read
Durable Execution for Business Workflows: Temporal, AWS Step Functions, and Reliable Automation
A practical guide to durable workflow orchestration with Temporal and AWS Step Functions: retries, idempotency, timers, human approvals, compensation, versioning, and AI agents.
Durable ExecutionWorkflow OrchestrationTemporalAWS Step Functions - 22 min read
Multi-Tenant SaaS Architecture: Tenant Isolation, PostgreSQL, Authorization, and Scaling
A practical guide to multi-tenant SaaS architecture: pool, silo, and bridge models, PostgreSQL RLS, authorization, tenant-safe jobs, storage, AI, scaling, and lifecycle operations.
SaaS ArchitectureMulti-TenancyTenant IsolationPostgreSQL - 20 min read
OpenTelemetry in Production: Observability Architecture for Traces, Metrics, Logs, and Cost Control
A practical guide to production OpenTelemetry architecture, semantic conventions, context propagation, sampling, cardinality, Collector reliability, SLOs, security, and cost control.
OpenTelemetryObservabilityDistributed TracingSRE - 21 min read
Zero-Downtime PostgreSQL Migrations: A Production Playbook for Safe Schema Changes
A practical guide to safe PostgreSQL schema changes with expand-contract, lock timeouts, concurrent indexes, validated constraints, batched backfills, and rollback planning.
PostgreSQLDatabase MigrationsBackend EngineeringZero Downtime - 20 min read
IoT Platform Architecture: Secure Device Connectivity, Edge Processing, Telemetry, and OTA Updates
A practical guide to production IoT architecture: device identity, MQTT, edge processing, telemetry pipelines, fleet monitoring, security, and reliable OTA updates.
IoTEdge ComputingDevice ManagementMQTT - 19 min read
Change Data Capture: Building Reliable Real-Time Data Pipelines Without Breaking Production
A practical guide to CDC architecture, Debezium, AWS DMS, transactional outbox, idempotency, schema evolution, monitoring, replay, and near-real-time data pipelines.
Change Data CaptureData EngineeringReal-Time DataAWS - 18 min read
GPU Inference Optimization: How to Reduce AI Model Serving Cost Without Sacrificing Reliability
A practical guide to reducing GPU inference cost with model right-sizing, quantization, batching, caching, autoscaling, observability, and reliable production architecture.
GPU ComputingAI InferenceModel ServingCost Optimization - 18 min read
Context Engineering for AI Agents: RAG, Memory, Tools, and Production Architecture
A practical guide to context engineering for production AI agents: RAG, memory, live tools, workflow state, security, evaluation, and cost control.
Context EngineeringAI AgentsRAGAgent Memory - 18 min read
Jev and Typed Decision Models: When AI Software Should Decide Instead of Generate Text
A practical guide to Jev from TypeSafe AI: typed Choice, Score, and Noul decisions, production architecture, evaluation, limitations, and business use cases.
JevTyped Decision ModelsAI AutomationAI Agents - 18 min read
MCP Security in Production: How to Connect Enterprise AI Agents Without Losing Control
A practical guide to securing production MCP servers with OAuth, tool-level authorization, prompt-injection defenses, isolation, approvals, and auditability.
MCP SecurityAI AgentsOAuthEnterprise AI - 17 min read
AI Agents vs. RPA: How to Choose the Right Business Process Automation Architecture
A practical guide to combining AI agents, RPA, durable workflows, APIs, and human approval for reliable business process automation.
Business Process AutomationAI AgentsRPAWorkflow Automation - 16 min read
AgentOps for Production AI Agents: Observability, Evaluation, Security, and Cost Control
A practical guide to operating production AI agents with end-to-end tracing, continuous evaluation, least-privilege security, approval gates, and cost controls.
AgentOpsAI AgentsObservabilityAI Security - 17 min read
Forward Deployed Engineering: Senior Engineers Embedded in Your Business to Ship Production Systems
How BoundLayer works as a forward deployed engineering partner to discover critical workflows, build integrations, ship production software, and deliver measurable business outcomes.
Forward Deployed EngineeringSoftware DeliveryAI AgentsAutomation - 14 min read
AI Agents and AI Software Development: How We Build Practical Systems for Real Business Workflows
How BoundLayer builds AI agents, RAG systems, workflow automation, data assistants, and custom AI software that connects to real business systems.
AI AgentsAI SoftwareAutomationRAG - 15 min read
AWS Infrastructure Audit and Optimization: How We Build, Fix, and Scale Cloud Platforms
How BoundLayer audits, creates, secures, optimizes, and operates AWS infrastructure for SaaS, fintech, AI, data, and backend-heavy products.
AWSCloud InfrastructureDevOpsCost Optimization - 13 min read
Senior Web3 and Crypto Engineering: How We Build Production-Ready Blockchain Products
How senior crypto specialists design and deliver Web3 products across smart contracts, wallets, backend systems, security, indexing, and production operations.
Web3CryptoBlockchainSmart Contracts - 16 min read
Software Modernization & Migration: A Safer Path From Legacy Systems to Modern Architecture
How BoundLayer analyzes legacy systems, uncovers operational pain, and delivers a gradual modernization and migration—from targeted optimization to microservices and selective rewrites in Go or Rust.
Software ModernizationLegacy MigrationMicroservicesGo - 24 min read
Legacy-to-Cloud Modernization: Building a More Reliable, Scalable, and Cost-Efficient System
How BoundLayer modernizes legacy applications for the cloud: discovery, stabilization, migration strategies, cost control, reliability, security, and measurable outcomes—without risky full rewrites.
Legacy SystemsCloud MigrationModernizationAWS - 20 min read
Legacy Software Modernization: Transform Core Systems Without Disrupting Your Business
A practical guide to modernizing legacy applications through assessment, stabilization, incremental delivery, cloud migration, and controlled change.
Legacy SystemsModernizationCloudArchitecture - 22 min read
How to Build a Fintech MVP: Architecture, Ledger, Security, and Scalable Business Processes
How we approach fintech MVP development with Formance Ledger for financial correctness and Temporal for durable, scalable business processes.
FintechMVPArchitectureLedger
Get a Free 30-Minute Technical Consultation
Share a few details about your project and we'll get back to you within 48 hours with a clear next step.
- No sales pressure — a senior engineer, not a sales rep
- Clear next step within 48 hours
- We can sign an NDA before we talk