Part-Time Contract | Remote | Approximately 20 Hours per Week

About the RoleA mission-critical SaaS platform used by approximately 800 flooring businesses to manage leads, estimates, product selection, inventory, scheduling, installations, invoicing, and payments is being modernized from a legacy .NET/ASP, SQL Server, stored-procedure-heavy environment to React, Node.js, Type

Script, native PostgreSQL, REST APIs, and AWS.

Much of the initial conversion has been completed using AI-assisted development.

The immediate priority is to clean up, test, validate, and safely release the converted system while existing customers remain active.

We are looking for a hands-on Senior Dev

Ops/Platform Engineer who can strengthen the delivery platform, observability, security, and production safeguards required for frequent, low-risk releases.

Responsibilities

Assess the current AWS infrastructure, CI/CD pipelines, environments, deployment process, and production risks.

Improve automated build, test, security-scanning, deployment, and rollback workflows.

Support small, frequent releases through feature flags, staged rollouts, health checks, and automated validation.

Establish safe coexistence between legacy and modern services during the migration.

Build and maintain infrastructure as code for repeatable, auditable environment provisioning.

Strengthen monitoring, centralized logging, distributed tracing, alerting, dashboards, and incident-response procedures.

Define service-level indicators for availability, latency, error rates, database health, queues, and critical business workflows.

Help diagnose performance and stability issues involving AWS, Node.js services, APIs, PostgreSQL, Babelfish, and legacy .NET components.

Support the transition from Babelfish and SQL Server-oriented behavior to native PostgreSQL.

Review capacity, connection-pool, timeout, retry, queue, and load-shedding configurations.

Improve resilience for asynchronous and event-driven workloads using services such as Lambda, SQS, Event

Bridge, API Gateway, Redis, and dead-letter queues.





Implement secure secrets management, access controls, audit logging, vulnerability management, backup, and recovery procedures.

Verify that rollback remains safe after application or database writes, including backward-compatible schema changes.

Review AI-generated infrastructure and deployment changes for correctness, security, maintainability, and operational risk.

Document deployment standards, incident procedures, environment configuration, and operational ownership.

Partner closely with engineering and product teams, with meaningful overlap during US working hours.

Required Qualifications

At least 7 years of professional Dev

Ops, SRE, platform engineering, or cloud infrastructure experience.

Strong hands-on experience operating production workloads in AWS.

Proven ownership of CI/CD architecture, automated deployments, monitoring, incident response, and rollback.

Experience supporting production systems built with Node.js, React, PostgreSQL, and .NET.

Strong understanding of: Infrastructure as code

Networking, DNS, load balancing, and API gateways

Containers and serverless workloads

Logs, metrics, traces, alerts, and production dashboards

Secrets management and least-privilege access

Backups, disaster recovery, and production readiness

Database migrations and backward-compatible schema changes

Connection pooling, capacity planning, retries, idempotency, and failure recovery

Experience introducing staged deployments, feature flags, canary releases, or blue-green deployments.

Ability to troubleshoot across application, infrastructure, network, and database layers.





Experience working on incremental modernization where legacy and modern systems must run in parallel.

Strong written and spoken English with the ability to communicate risk and recommendations clearly.

Ability to work independently and deliver senior-level ownership within a part-time schedule.

Preferred Qualifications

Experience with AWS Lambda, SQS, Event

Bridge, API Gateway, Redis, Cloud

Watch, and container-based AWS services.

Experience migrating SQL Server workloads to PostgreSQL, particularly through Babelfish.

Experience with Terraform, Cloud

Formation, or similar infrastructure-as-code tooling.

Experience operating workflow-heavy SaaS involving inventory, scheduling, invoicing, payments, or other production-critical transactions.

Familiarity with Open

Telemetry, distributed tracing, and structured logging.

Experience reviewing infrastructure or deployment code generated through Claude Code, Codex, Cursor, or similar AI tools.

Experience improving engineering platforms for teams releasing daily or near-daily.

What Success Looks Like

During the initial engagement, this person will: Produce a clear assessment of the current infrastructure, deployment risks, and release blockers.

Establish reliable CI/CD and environment-management standards.

Improve monitoring across the core quote-to-invoice workflow.

Make deployments smaller, repeatable, observable, and safely reversible.

Strengthen production readiness for the AI-converted React, Node.js, and PostgreSQL platform.

Reduce instability associated with Babelfish, database connections, asynchronous workloads, and legacy-modern coexistence.

Create practical operational documentation the engineering team can maintain after the engagement.

Engagement Details

Remote, part-time contract

Approximately 20 hours per week

Regular overlap with the US-based team required

Initial focus on release readiness and platform stabilization, followed by modernization, scalability, and support for AI-enabled product capabilities

📌 Senior DevOps/Platform Engineer (Buenos Aires)
🏢 Looi Consulting
📍 Buenos Aires