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Internal tools
Custom dashboards, admin panels, operational tooling for finance, HR, customer service, supply chain. Identity-integrated with corporate IdP, audit-logged, role-aware.
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Custom Software · FORGE
Enterprise Applications.
Internal tools, workflow apps, and system-integration platforms — engineered against the regulatory frame, identity model, and operational discipline enterprise IT actually runs on. Not consumer SaaS dressed up; not Big-4 deliverables that nobody wants to operate.
- Practice
- Custom Software
- Department
- FORGE
The problem
Most enterprise apps fail at the seams between identity, audit, and operations.
The pattern across enterprise application engagements: a beautifully designed internal tool that doesn't integrate cleanly with the corporate IdP; a workflow engine that lacks the audit trail compliance actually expects; a system-integration platform that’s a cron job nobody owns; a custom application that ships under a Big-4 brand and immediately becomes a maintenance burden the customer didn’t scope; an internal tool that requires a special launch URL because nobody wired SSO. Enterprise apps live or die by the operating discipline around them.
Prosigns ships enterprise applications with the operating discipline as primary scope. SSO and audit logging from day one. Integration with the systems already in production (D365, Salesforce, ServiceNow, ERPs) through documented contracts. Observability calibrated to the SLOs IT operations actually defends. The bench in the proposal is the bench in production — same engineers from kickoff to cutover.
Where it ships
5 use cases, in production.
Specific applications we’ve built and operated. Not speculative — every example below is grounded in a real shipped engagement.
- 02
Workflow apps
Approval routing, case management, exception handling, multi-party processes. Configurable workflow engines with full audit trails and integration to systems of record.
- 03
System integration platforms
Middleware connecting D365, Salesforce, ServiceNow, ERPs, payment gateways, and the long tail of corporate systems. Documented contracts, retry semantics, fallback for partner outages.
- 04
Custom enterprise platforms
Domain-specific platforms — claims, underwriting, supply-chain orchestration, treasury — built when off-the-shelf SaaS doesn't fit and the workload genuinely warrants engineering investment.
- 05
Replacement of legacy enterprise apps
Strangler-fig migration off Lotus Notes, in-house Java apps, custom .NET tools, mainframe-attached green-screen UIs. Documented rollback per workload; phased cutover.
How we engage
4 phases, named in the SOW.
Each phase has a deliverable, an owner, and an acceptance criterion. Not slogans — operating rules.
- 01
Operating-reality discovery
Discovery includes the operations team that’ll run the app — not just the product owner who scoped it. Identity model, audit requirements, integration surface, on-call expectations all surface before architecture decisions are made.
- 02
Identity + audit from day one
SSO via corporate IdP, audit logging granularity defined before the first commit, role-based access designed in. The app inherits the security posture of the rest of the IT estate, not its own siloed setup.
- 03
Integration as primary scope
Integrations to D365, Salesforce, ServiceNow, ERPs, and the long tail of internal systems are designed before UI work begins. Documented contracts, dual-write windows where applicable, explicit fallback for partner outages.
- 04
Operate or hand off — explicitly
Choose: stay with us under Managed Services for ongoing operations, or hand off with a 90-day shadowing period and complete operational documentation. Either way, runbooks and ADR set are yours from day one.
Capabilities
What’s in scope.
- Internal tool development: dashboards, admin panels, operational UI
- Workflow apps with configurable routing and audit-grade logging
- System integration: REST, GraphQL, gRPC, event-driven, iPaaS gateways
- Custom enterprise platforms (claims, underwriting, supply chain, treasury)
- Legacy modernization: Lotus Notes, in-house Java, .NET, mainframe-attached
- Identity: SSO via corporate IdP (Microsoft Entra ID, Okta, OneLogin)
- Audit logging that survives compliance examination
- Observability: tenant-aware SLOs, structured logging, distributed tracing
Stack
Tools we use in production.
- Languages
- TypeScriptJavaC# / .NETPythonGo
- Frameworks
- Next.jsSpring Boot.NET CoreFastAPI
- Databases
- PostgreSQLSQL ServerOracleMongoDBDynamoDB
- Integration
- Azure Logic AppsAWS EventBridgeMuleSoftWorkatoBoomi
- Identity
- Microsoft Entra IDOktaOneLoginAuth0Custom OIDC
- Cloud + ops
- AWSAzureGCPTerraformDatadogSplunk
Selected work
Quantified outcomes, not adjectives.
Common questions
Asked before the first call.
- 01
Can you integrate with our existing enterprise systems?
Yes — that's most of the engagement. D365, Salesforce, ServiceNow, SAP, Oracle ERP, mainframe systems, and the long tail of in-house Java / .NET / Lotus Notes / proprietary tools are all in our active portfolio. We treat integration as primary scope, not phase 2.
- 02
What about replacing aging custom apps?
Strangler-fig migration with documented rollback per workload. Most aging-custom-app replacements land in 9–18 months with no benefits-payment or operations downtime. We assess what to replatform, what to rearchitect, and what to retire — and we tell you which is which in writing.
- 03
Do you handle low-code platforms (Power Platform, Mendix, Retool)?
Sometimes — when the workload genuinely fits the platform's economics. Power Platform wins for many internal tools; Retool wins for admin panels with simple data models. Custom code wins when the workflow has product-level complexity or the operational requirements exceed what low-code can support. We tell you which fits.
- 04
How do you handle SSO / IdP integration?
OIDC / SAML against the corporate IdP (Microsoft Entra ID, Okta, OneLogin). SCIM provisioning where the IdP supports it. Custom OIDC implementation when integration with legacy IdPs is required. SSO is week-1 scope, not phase-2.
- 05
What about compliance frame?
CITADEL co-pilots compliance scope from kickoff. SOC 2 Type II, ISO 27001, HIPAA, PCI-DSS, SOX, FFIEC — engineered into the architecture rather than retrofitted before audit. Audit logs are real audit logs, not application logs labeled as audit logs.
- 06
What does an enterprise app engagement cost?
Discovery + ADR: 4–6 weeks, $50K–$150K. Internal tool / workflow app: 3–6 months, $250K–$800K. System integration platform: 4–8 months, $400K–$1.2M. Custom enterprise platform: $1M–$4M depending on scope. Legacy replacement programs: $1M–$5M+. Managed Services: $30K–$200K monthly retainer.
Within Custom Software
Other capabilities in this practice.
Talk to us
Bring a enterprise applications problem. We’ll bring a senior engineer.
A senior engineer plus the FORGE department lead joins the first call. No discovery gauntlet, no junior reps.