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SLA & Maintenance

The feature shipped six months ago. Since then: two critical bugs, one performance regression, and a dependency that was deprecated without anyone noticing. Your users adapted — they found workarounds. They stopped reporting issues. They started looking at competitors. Silence is not satisfaction. Silence is resignation.

We maintain your software with the care of people who built it — because we probably did.

The problem

Sound familiar?

The silent rot

Dependencies go out of date. Security patches pile up. Performance degrades imperceptibly — 50ms here, 100ms there — until one day it's just slow and nobody knows when it started.

The abandoned codebase

The original team moved on to the next project. The new team inherited code they don't understand. Bug fixes take 3x longer because nobody knows the context.

The 'it works' denial

No crashes doesn't mean no problems. Your users have simply learned to avoid the broken parts. They navigate around bugs like drivers avoiding potholes — functional but eroding trust daily.

The compliance cliff

Your app hasn't been updated in 18 months. It's three versions behind on its framework. One day you'll need to pass a security audit and discover you need a full rewrite to comply.

Our approach

Here's how we fix this.

We maintain your software with the care of people who built it — because we probably did.

How we deliver

From kickoff to production.

01

Health assessment

Week 1

We audit your codebase for security vulnerabilities, outdated dependencies, performance regressions, and technical debt. You get a prioritized report of what needs attention now vs. later.

02

Stabilization sprint

Week 1-3

Address critical security issues, update deprecated dependencies, fix the bugs your users stopped reporting. Bring the codebase to a healthy baseline.

03

Ongoing maintenance rhythm

Ongoing

Regular dependency updates, proactive security patching, performance monitoring, and a dedicated point of contact who knows your codebase intimately.

04

Guaranteed response times

Ongoing

SLA-backed response windows: critical issues within 2 hours, high-priority within 8, standard within 24. Measured, reported, and held to.

05

Quarterly health reviews

Quarterly

Regular check-ins on codebase health, performance trends, and upcoming risks. You're never surprised by 'we need a rewrite.'

What you get

Everything you need. Nothing you don't.

01

SLA-backed response times

Critical: 2h. High: 8h. Standard: 24h. Guaranteed.

02

Proactive dependency management

Never fall more than one major version behind

03

Security vulnerability scanning

CVEs caught and patched before they become incidents

04

Performance trend monitoring

Degradation caught at 50ms, not 5 seconds

05

Quarterly health reports

Clear picture of technical debt trajectory

06

Bug fix budget (hours/month)

Known capacity for addressing issues, not ad-hoc scrambles

Proof, not promises

We've done this before.

LedgerLink project mockup
Project Lifeline6 weeks (critical API migrations), then ongoing monthly maintenance engagement

LedgerLink

B2B Fintech (Payments)95 employees, Series C

The situation

LedgerLink processes ACH and wire transfers for 340 mid-market businesses, handling $180M in monthly payment volume. Their platform hadn't received meaningful maintenance in 18 months — the previous engineering team was laid off during a cost-cutting round and remaining devs focused exclusively on new features. Three critical third-party APIs were approaching end-of-life: Plaid's legacy endpoint (sunsetting in 90 days), Dwolla v1 (deprecated), and their KYC provider's SDK (2 major versions behind with known CVEs).

Technical challenge

Node.js runtime on v14 (EOL), 67% of npm dependencies had known vulnerabilities, and zero automated testing. The Plaid legacy endpoint was sunsetting in 90 days with no migration path documented internally. Dwolla v1's async status model differed fundamentally from v2, requiring a full rewrite of the transfer reconciliation flow. One wrong deprecation could halt $180M in monthly payments. Constraint: zero downtime during migration — regulated financial transactions cannot be interrupted.

What we did

1

Conducted a full dependency audit identifying 214 vulnerable packages, 3 critical API deprecations, and 12 breaking changes required for the Node.js 14 to 20 migration — prioritized by blast radius and deadline urgency

2

Migrated Plaid integration from legacy /transactions endpoint to the new Sync API, rewriting webhook handling and implementing idempotent transaction reconciliation — completed 6 weeks before sunset deadline with parallel validation against production data

3

Upgraded Dwolla from v1 to v2 API with new webhook verification, updated transfer flow to handle the new async status model, and built a comprehensive integration test suite using recorded API fixtures

4

Executed Node.js 14 to 20 migration in stages: dependency upgrades first, then runtime migration, then enabling new language features — with zero-downtime blue-green deploys and instant rollback capability at each stage

5

Established ongoing SLA-based maintenance contract: weekly dependency updates, monthly security patches, quarterly major upgrades, 4-hour critical response time, and proactive monitoring of all third-party API deprecation notices and changelog feeds

Results

Known Vulnerabilities (npm audit)

2140

API Deprecation Risk

3 APIs sunsetting (90 days)All current, monitored

Node.js Version

v14 (EOL, unsupported)v20 LTS (active support)

Payment Processing Downtime (during migration)

N/AZero (0 minutes)

Time to Patch Critical CVE

No process (never patched)< 24 hours

Automated Test Coverage

0%78% (critical paths)

Technologies

Node.jsTypeScriptPlaid APIDwolla APIPostgreSQLRedisJestGitHub ActionsSnykDependabotDockerAWS ECS

We were sitting on a ticking time bomb and didn't fully realize it until they showed us the audit. They defused it without a single second of payment downtime. Now we never fall behind again.

Amit P., CTO, LedgerLink

Tech stack

Built on what works.

DevOps

SentrySentryNNew Relic

Other

SStatusPagePPagerDutyUUptime Robot

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