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Marcus L.

Senior full-stack engineer
4.9(132 reviews)📍 Austin, TX⚡ Replies <1h

Ex-engineering lead at two YC startups. 9 years building production-ready features end-to-end, from infra to UI.

TypeScriptNext.jsPostgreSQLAWS
From
$165/hr
Per-project rates also available
Brief Marcus← Back to network
ⓘ Sample profile + mockup portfolio. Project screenshots link to the real client sites for reference only.
Top projects

Selected work

3 highlighted projects · ranging from $38,000 to $120,000

Stripe screenshotFlagship2024
Backend · Stripe

Custom billing portal & metered usage

Built a self-serve customer portal on top of Stripe Billing with metered usage, proration logic, and audit trail. Migrated 12k accounts.

  • 12k accounts migrated
  • Zero downtime
Value
$75k–$120k
Duration
14 weeks
PlanetScale screenshotStarter2024
Tooling · PlanetScale

Schema diff CLI

Open-source CLI that diffs MySQL schemas across branches and flags risky migrations before they merge. Used internally + by 800+ teams.

Value
$9k–$14k
Duration
4 weeks
Resend screenshotMid-scope2023
Backend · Resend

Webhook-driven email pipeline rewrite

Replaced a batch-based send queue with an event-driven pipeline. P95 send latency dropped from 8s to 280ms.

Value
$38k–$55k
Duration
7 weeks
Recent engagements

Latest projects

Most recent first · pricing reflects total engagement value

FlagshipBackend · Stripe · 2024

Custom billing portal & metered usage

Built a self-serve customer portal on top of Stripe Billing with metered usage, proration logic, and audit trail. Migrated 12k accounts.

TypeScriptNext.jsPostgreSQLStripe API
Engagement value
$75k–$120k
14 weeks
StarterTooling · PlanetScale · 2024

Schema diff CLI

Open-source CLI that diffs MySQL schemas across branches and flags risky migrations before they merge. Used internally + by 800+ teams.

GoMySQLCLI
Engagement value
$9k–$14k
4 weeks
Mid-scopeBackend · Resend · 2023

Webhook-driven email pipeline rewrite

Replaced a batch-based send queue with an event-driven pipeline. P95 send latency dropped from 8s to 280ms.

TypeScriptPostgresRedisAWS Lambda
Engagement value
$38k–$55k
7 weeks

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