Senior Full Stack Engineer - AI-Enabled Backend Leader

Allen Benzon Senior Full Stack Software Engineer AI Software Development

*******************@*****.*** +63-917******* Pasig, Metro Manila, Philippines https://www.linkedin.com/in/allen-benzon-121092117/ Profile

Lead Full Stack Engineer with 10+ years delivering production SaaS across insurtech/HR tech and automotive/finance platforms. Experienced in building cloud-native microservices, scalable web applications, and event-driven workflows with strong emphasis on reliability, observability, and security. Recently focused on AI-enabled features (LLM integrations, RAG-style retrieval, semantic search) as a software engineer—owning API design, guardrails, evaluation, latency/cost controls, and production monitoring (not model training). Comfortable leading teams, driving architecture, and shipping high-impact features for global stakeholders.

Professional Experience

Lead Full Stack Software Engineer

Willis Towers Watson

06/2021 – Present Americas

WTW builds insurtech and HR/total rewards software including systems integration & automation platforms

(Unify) and cloud-based HR/compensation tooling.

•Led development of enterprise web applications and services supporting insurance/HR technology workflows, partnering with global stakeholders on roadmap, delivery, and production readiness.

•Architected and shipped workflow automation + systems integration capabilities aligned with WTW’s Unify-style governance model (auditability, approvals, versioning, controlled execution).

•Designed scalable service boundaries: API contracts, data models, caching, and failure isolation to support high-availability, enterprise-grade usage.

•Implemented observability-by-default (distributed tracing, structured logs, SLO dashboards, alerting), reducing MTTR and improving on-call quality.

•Established CI/CD improvements (automated tests, safe rollout patterns, environment parity) to increase deployment frequency and reduce regression risk.

AI-enabled product work:

•Integrated LLM-powered features into internal/product workflows (summarization, classification, assisted content generation) with strict guardrails: schema-validated outputs, PII-safe handling, and deterministic fallbacks.

•Implemented RAG-style retrieval for enterprise knowledge (policy/HR/insurance documentation), combining search + retrieval with citation-friendly responses to reduce hallucination risk.

•Added AI observability and cost controls (token budgets, caching, rate limits, timeout handling, sampling- based evaluation) to keep features reliable under production traffic. Software Engineer

Nowcom

03/2018 – 05/2021 Metro Manila

Nowcom builds platforms for the automotive and finance sectors including DealerCenter (dealer management system) and finance/loan servicing applications.

•Built and maintained full-stack features for a cloud-based dealer management platform (inventory, CRM workflows, financing/insurance flows) aligned with DealerCenter-style operations.

•Developed backend services to support high-volume transactional workflows (deal processing, validations, document workflows), focusing on correctness, performance, and operational safety.

•Implemented caching + query optimization for critical screens and reports; improved perceived performance and reduced database hotspots.

•Strengthened platform reliability through retries/idempotency, background job processing, and improved monitoring/alerting.

Software Developer

Paul Lomax Software Inc.

08/2015 – 05/2018 Makati City

Paul Lomax Software is associated with building a cloud-based code generation / rapid app development system (e.g., CGen) and software consultancy.

•Developed features for a cloud-based code generation / rapid application development platform, improving developer productivity and accelerating delivery of database-driven business apps.

•Built reusable UI components and backend modules for common enterprise patterns (auth, CRUD + workflows, reporting, integrations).

•Improved build/deploy automation and introduced coding standards/testing practices to stabilize releases. Software Developer

Company name is Confidential

05/2014 – 06/2015 Quezon City

•Delivered web application features end-to-end (UI + API + database) for internal business systems.

•Implemented authentication/authorization, reporting modules, and performance improvements for frequently used workflows.

•Collaborated closely with stakeholders to translate requirements into maintainable releases. Education

Bachelor's Degree, Information Technology

University of Caloocan City

08/2012 – 05/2015

Special Course, CISCO networks

Mapua University

2016

CORE COMPETENCIES

•Backend: C#/.NET, Python, TypeScript, REST/gRPC, microservices, DDD-lite, auth (OAuth/OIDC), multi- tenant patterns

•Frontend: React, Angular, TypeScript, modern component design, performance optimization

•Data: PostgreSQL/MySQL, SQL Server, Redis, indexing/query tuning, caching strategies

•Cloud/DevOps: AWS/Azure/GCP, Docker, Kubernetes, Terraform, CI/CD, release strategies (blue/green, canary)

•Eventing: Kafka/RabbitMQ/SQS, background workers, retries/DLQ, idempotency

•Observability: OpenTelemetry, ELK, Prometheus/Grafana, dashboards/alerts, incident response

•AI Integration (non-ML): LLM APIs, tool/function calling, RAG patterns, vector search

(pgvector/OpenSearch/Pinecone), prompt/output validation, safety filters, eval + monitoring, cost/latency optimization

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