Federico Autalan

Backend · Remote · C2C / B2B via US LLC · Not W-2 · No visa sponsorship · EST / PST / EU

Federico Autalan

Senior Java and AWS work for product teams — 20+ years in production systems, 10+ years with US and European companies. You contract Kayak Consulting LLC (C2C / B2B) — not W-2 employment, no visa sponsorship. Overlap in your hours; a remote engineer who ships.

Experience with teams at

MercadoLibre
Rent The Runway
Siemens
Volkswagen
Telecom
Elementum
Coforge

What I bring

Senior backend work across industries where concurrency, integrations, and reliability matter. Domains below — not a named client list.

Performance

Finding and fixing bottlenecks in hot paths — concurrency, data access, async pipelines, and load that shows up only in production.

Payments & fintech

High-concurrency payment backends, multi-country rules, and zero-downtime release patterns on systems that run around the clock.

Marketplace & catalog

Product and catalog platforms — APIs as source of truth, inventory-aware flows, ML-assisted attributes to cut manual cataloging time.

Supply chain

Billing and partner integrations, warehouse edge devices into REST APIs, and UI/mobile pieces when the delivery needs it.

Ops & incidents

Event-driven incident and notification platforms on AWS (SQS, SNS, SES, Lambda) for US / California product teams.

Telecom BSS

Billing and BSS cores under peak cycles, large subscriber bases, and data pipelines that have to stay up.

Enterprise integration

ERP/SAP bridges, tax and regulatory flows, legacy modernization without freezing the business.

Applied AI

Portfolio demos — not client production systems. Agents, RAG, and classification with human-in-the-loop and rules outside the model. See live demos.

Spikes & MVPs

Comfortable under unclear requirements — narrow the question, ship a thin testable slice, then harden.

Tech evaluation

Research options, run spikes, and recommend what to adopt — then build whatever you decide. Trade-offs against your constraints, often with staff engineers and tech leads.

Core stack

Java Kotlin Spring Boot AWS PostgreSQL Python TypeScript / Angular CI/CD

Portfolio

Selected Work & Live Demos

Hands-on examples of how I design backend systems, cloud architectures, and AI-assisted business workflows for enterprise teams. Short walkthroughs also live on Kayak Consulting LLC on LinkedIn.

Marketplace & eCommerce Scale

High-traffic Java services for global marketplaces: catalog, checkout flows, and inventory orchestration with strict latency and reliability targets.

Java Spring Boot Distributed Systems

AWS Event-Driven Platforms

Event-driven pipelines on Kinesis, SQS, and Lambda: decoupled services, retries, and tracing for production workloads.

AWS Kinesis SQS

Enterprise Integration

Backend work for automotive, telecom, and industrial clients: legacy integration, API gateways, and tuning on PostgreSQL-heavy stacks.

Kotlin PostgreSQL B2B APIs

Subscription & Fulfillment Logic

Inventory and fulfillment engines for fashion-rental models: availability rules, warehouse routing, and customer-facing SLA commitments.

Inventory Workflows SLA Design

How we work

Fully remote. Contracts and invoicing run through Kayak Consulting LLC, a US company, on C2C (via staffing) or B2B (direct). Not W-2 employment or visa sponsorship. Standard engagement: W-9 from the LLC and invoicing — not a W-2 hire. Overlap with EST, CST, PST, and EU hours. Clients in California, wider US, Ireland, and Europe.

Engagement models

Monthly retainer

Ongoing capacity on your team — steady weekly hours, part-time or full-time.

Hourly (T&M)

Flexible spikes, advisory, and work where scope shifts week to week.

Fixed milestones

Defined outcomes quoted up front. Written scope; changes go through a change order.

Security

NDA and IP. All work product (code, docs, architecture) is owned by the client through Kayak Consulting LLC, under NDA.

Data. Production access only when required, in isolated environments. Local copies on full-disk encryption / FileVault; purged when the engagement ends.

Secrets. Password manager and encrypted channels for AWS tokens and credentials — never stored in plain text.

Devices. Work from encrypted, up-to-date endpoints.

Hours

Strong overlap with US business hours. Daily sync when the team wants it; same-day replies in the window we agree up front.

Ownership

Open problems, not ticket farming. Investigate, propose, and ship end-to-end — debt and risk called out early.

Commitment

Built for multi-month retainers. One primary engagement at a time — start date and weekly hours confirmed against capacity before kickoff.

Payment

ACH / US domestic wire to Kayak Consulting LLC · Net 15. No international transfer required for US clients.

English for technical discussions and client meetings; Spanish native; Portuguese intermediate.

Demos and engineering notes: Kayak Consulting LLC on LinkedIn.

Recommendations

Former managers and teammates have left written recommendations on LinkedIn — names, roles, and context included.

Read recommendations on LinkedIn

Let's work together

US LLC · C2C / B2B · not W-2 · no visa sponsorship · monthly, hourly, or fixed.

Prefer LinkedIn? Connect with me or follow Kayak Consulting LLC — or use the form below.

Let's connect Federico Autalan Senior Software Engineer