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I am a technology and operations leader with hands-on software roots, trusted to steady teams and systems in regulated and high-stakes environments. I design pragmatic, scalable solutions and build strong, collaborative teams that ship reliable software at pace. My work spans healthcare IT, government, fintech, insurances, and hospitality, with a focus on release hygiene, observability, cost management, and security. I lead delivery and mentoring, set simple processes that stick, and partner closely with product and operations. I excel at assessing complex challenges, rapidly executing effective strategies, and ramping fast on new stacks—grounded in fundamentals of data, networking, and systems design.…I am a technology and operations leader with hands-on software roots, trusted to steady teams and systems in regulated and high-stakes environments. I design pragmatic, scalable solutions and build strong, collaborative teams that ship reliable software at pace. My work spans healthcare IT, government, fintech, insurances, and hospitality, with a focus on release hygiene, observability, cost management, and security. I lead delivery and mentoring, set simple processes that stick, and partner closely with product and operations. I excel at assessing complex challenges, rapidly executing effective strategies, and ramping fast on new stacks—grounded in fundamentals of data, networking, and systems design.

Daniel Wija Waluyajati

Back-End Developer, Full Stack Developer, Developer, +7

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I am a technology and operations leader with hands-on software roots, trusted to steady teams and systems in regulated and high-stakes environments. I design pragmatic, scalable solutions and build strong, collaborative teams that ship reliable software at pace. My work spans healthcare IT, government, fintech, insurances, and hospitality, with a focus on release hygiene, observability, cost management, and security. I lead delivery and mentoring, set simple processes that stick, and partner closely with product and operations. I excel at assessing complex challenges, rapidly executing effective strategies, and ramping fast on new stacks—grounded in fundamentals of data, networking, and systems design.…I am a technology and operations leader with hands-on software roots, trusted to steady teams and systems in regulated and high-stakes environments. I design pragmatic, scalable solutions and build strong, collaborative teams that ship reliable software at pace. My work spans healthcare IT, government, fintech, insurances, and hospitality, with a focus on release hygiene, observability, cost management, and security. I lead delivery and mentoring, set simple processes that stick, and partner closely with product and operations. I excel at assessing complex challenges, rapidly executing effective strategies, and ramping fast on new stacks—grounded in fundamentals of data, networking, and systems design.

Available to hire

I am a technology and operations leader with hands-on software roots, trusted to steady teams and systems in regulated and high-stakes environments. I design pragmatic, scalable solutions and build strong, collaborative teams that ship reliable software at pace. My work spans healthcare IT, government, fintech, insurances, and hospitality, with a focus on release hygiene, observability, cost management, and security.

I lead delivery and mentoring, set simple processes that stick, and partner closely with product and operations. I excel at assessing complex challenges, rapidly executing effective strategies, and ramping fast on new stacks—grounded in fundamentals of data, networking, and systems design.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Indonesian

Fluent

English

Advanced

Work Experience

Engineering Manager 2 at WePlus

August 1, 2025 - Present

Led transition delivery during probation, established release hygiene with end-to-end deployment runbooks, pre-flight checks, validation steps, and rollback paths. Set a simple release calendar and introduced change notes to ensure deployments are traceable and repeatable. Built an inventory of services/data stores/networks, tagged cloud resources, and decommissioned unused EC2 instances. Drafted a target architecture and migration tracks to reduce drift. Initiated Mobile Modernization by consolidating to a single React Native codebase, set coding standards, lint/tests/CI gates, and established a lightweight review cadence with the mobile lead. Started platform standards and security baselines (service conventions, health endpoints, structured logging, config-by-env) and opened an RFC for centralized secrets management (least-privilege access). Proposed observability and incident practice with minimal logging/metrics expectations and an incident note template; launched weekly tech revi

Senior Engineer 1 at Finsoft.id → ReliID (via acquisition)

May 15, 2023 - July 25, 2025

Architected and implemented scalable backend services in TypeScript/Node.js with PostgreSQL, MongoDB, Redis, and RabbitMQ. Delivered end-to-end architecture for the B2B borrower flow from Loan Origination to Loan Management, aligned data models, service contracts, and orchestration for a seamless operator/customer experience. Established lightweight engineering practices: input validation, idempotent handlers, structured logging, and latency optimization for hot paths. Integrated external systems (Fazz payments, Ninja Express) with signed webhooks, idempotency keys, retry/callback, and daily reconciliation jobs. Authored service/integration docs and runbooks to reduce single-point knowledge risk and accelerate onboarding. Mentored juniors via design reviews and pair programming; managed complex production escalations.

General Manager at Aprilia Hospital, Cilacap

February 6, 2024 - February 1, 2025

Led non-clinical operations (facilities, IT, procurement, marketing/PKRS, HR) with a focus on service reliability and governance. Implemented weekly operating cadence, escalation paths, and cross-unit coordination. Directed PKRS health-promotion programs with campaign calendars and patient-education materials. Standardized payroll framework, shift guidance, and monthly closures to achieve consistent HR practices. Standardized SOPs for procurement, negotiated SLAs for equipment and supplies, and supported clinical staffing with vendor relations to ensure coverage continuity. Tightened documentation, access control, and incident logging; improved governance through vendor/contract record handling and approvals aligned to hospital governance.

Head of Information Technology at Ananda Hospital, Banyumas

February 6, 2023 - February 6, 2024

Elevated IT to report to the Hospital Director; defined RACI and weekly operations reviews with monthly scorecards. Migrated network/infrastructure to a more predictable, fiber-based architecture; designed primary/replica data flows for analytics and reporting; implemented stricter backup policies with restore drills and reusable libraries. Tightened security with RBAC, access controls, and audit trails; containerized internal services with Docker to streamline admin/ops workflows. Delivered internal tools (dashboard UIs for registration, finance, and ops) and provided acting leadership to prioritize fixes and features aligned to hospital targets.

Backend Engineer at Selleri.id

September 9, 2022 - March 1, 2023

Built core backend services in Node.js (with some Go) exposing REST endpoints backed by PostgreSQL and MongoDB; improved code quality with tests and stricter API contracts. Enhanced latency stability through optimized connection pools, caching, and idempotent handlers. Integrated external payments (Fazz) and a 3PL (Ninja Express) with signed webhooks, retry logic, and daily reconciliation jobs. Introduced centralized logging and lightweight dashboards for incident visibility; containerized services with Docker and documented runbooks for deployments. Contributed to React-admin UIs for operations, improving workflow efficiency.

Backend Engineer at Ananda Hospital

September 1, 2019 - September 18, 2022

Designed and maintained internal services for administrative/operational workflows using Node.js and PHP (REST APIs) with PostgreSQL. Implemented government/payer integrations (SIRS Online, BPJS Kesehatan) with eligibility checks, SEP creation, claims, and verification workflows, plus DOKU payment gateway (signed callbacks, signature/HMAC verification, reconciliation). Improved performance with background workers and SQL optimization; introduced caching to reduce timeouts during registration/billing peaks; enforced RBAC and scoped API keys; added audit trails for sensitive data access; containerized services with Docker and added health checks and basic monitoring.

Software Engineer at Dinas Komunikasi dan Informatika Kabupaten Banyumas

August 1, 2017 - August 31, 2019

Built PHP/HTML web apps for district operations (dashboards, citizen requests, service information). Tuned NGINX reverse proxy and optimized PostgreSQL queries/indices to handle peak loads (~1k req/s). Implemented PostgreSQL primary/standby with streaming replication and PgPool for pooling/failover; introduced in-memory caching and replicated critical application nodes to reduce latency. Hardened Linux infrastructure (TLS, firewall, least-privilege), enforced change control, and maintained audit logs per governance requirements. Automated backups, scripts for maintenance, and basic monitoring.

Co-Founder / Manager at Mise - Coffee Milk and Tea

April 5, 2021 - March 1, 2023

Co-founded a neighborhood coffee/tea venture; defined brand direction and delivery-focused operating model. Managed menu governance (recipes, pricing, margins, promotions) to hit COGS targets. Maintained P&L and cash reconciliation, tracked sales and promo impact. Sourced key ingredients, negotiated vendor terms, and maintained safety stock for weekend peaks. Executed local marketing and community engagement (WhatsApp-based campaigns). Built in-house tooling (lightweight menu page, CMS, landing page, POS) to streamline ordering and daily close; exported reports for month-end review. Led daily operations, training, and shift policies.

Freelance Full Stack Engineer at Aiqqon.id

January 9, 2021 - June 25, 2021

Built RESTful payment APIs and webhooks; integrated QRIS-compatible e-wallet rails with signature verification, idempotent retries, and daily reconciliation jobs. Delivered three production apps (CMS, Payments, standalone backend) with clear API contracts and admin tooling for non-technical users. Designed normalized MySQL schemas with targeted indexes to maintain predictable latency under merchant load. Emphasized mobile-first public flows and internal tooling; used Firebase for authentication/notifications and documented handover artifacts to reduce regression risk.

Engineering Manager 2 at ePlus

August 1, 2025 - Present

Transition leadership—led delivery during incidents while establishing release hygiene, documentation, and an architecture baseline. Built an inventory of services/resourced data stores, defined migration tracks to reduce drift, and initiated a mobile modernization effort. Started platform standards (health/readiness endpoints, structured logging, env-based configuration) and opened an RFC for centralized secrets management. Implemented a weekly tech review cadence to capture decisions and align with Product/Business on backlog.

General Manager at Aprillia Hospital, Cilacap

February 6, 2024 - February 1, 2025

Led non-clinical operations (facilities, IT, procurement, marketing/PKRS, HR); established weekly operating cadence, escalation paths, KPI dashboards, and cross-unit coordination. Directed PKRS campaigns and patient-education outreach aligned with local public-health priorities. Implemented clearer payroll framework and shift guidelines for consistency; standardized SOPs and vendor contracts to support governance.

Backend Engineer 1 at Selleri.id

September 9, 2022 - March 1, 2023

Platform & services: developed core backend APIs in Node.js (with Go for selected services) backed by PostgreSQL/MongoDB; improved test coverage and API contracts. Implemented payment integrations and event-driven workflows; added observability with centralized logging and lightweight dashboards; containerized services and authored runbooks for deployments.

Backend Engineer at Ananda Hospital, Banyumas

September 1, 2019 - September 18, 2022

Delivered core backend services for internal workflows; focused on performance, reliability, and security; implemented RBAC and audit logging for sensitive data access; containerized services with health checks and runbooks.

Freelance Full Stack Engineer 2 at Aiqqon.id

January 29, 2021 - June 25, 2021

Built RESTful payment APIs and webhooks; integrated crypto-wallet rails and signature verification with retries and reconciliation jobs. Delivered three production apps (CMS, Payments, Backend) with clean API contracts and admin tooling; implemented mobile-first UX and Firebase authentication/notifications; produced handover docs and smoke tests.

Engineering Manager at ePlus

August 21, 2025 - Present

Transition leadership—leading delivery during problem periods while establishing release hygiene, documentation, and a baseline architecture. Implemented end-to-end deployment runbooks, release calendar, and change notes for traceability. Built an inventory of services/datastores/networks, tagged cloud resources, and decommissioned unused EC2; drafted target architecture and migration tracks to reduce drift. Kicked off mobile modernization to a single React Native codebase; set standards, lint/tests/CI gates, and lightweight review cadence with the mobile lead. Established platform standards and security baseline; initiated centralized secret management through RFCs. Created observability guidelines and an incident template; started weekly tech reviews to capture decisions and maintain a transparent backlog.

Senior Engineer 1 at ReliID (via acquisition from Finsoft.id)

May 15, 2023 - July 25, 2025

Architecture & core services: designed and implemented scalable backend services in TypeScript/Node.js with PostgreSQL, MongoDB, Redis, RabbitMQ; delivered clean, modular APIs consumed by ReactJS frontends. Product flow ownership from Loan Origination to Loan Management; aligned data models, service contracts, and orchestration for a seamless operator/customer experience. Engineering practices & performance: implemented lightweight coding/review standards; added input validation, idempotent handlers, structured logging, and targeted hot-path profiling to stabilize latency. Documentation & readiness: authored service/integration docs and runbooks to reduce single points of knowledge and accelerate onboarding. Collaboration & leadership: partnered with Product/Ops and external stakeholders to refine requirements, mentored juniors, and owned complex production escalations.

Head of Information Technology at Ananda Hospital

February 6, 2023 - February 6, 2024

Elevated IT to report to the Hospital Director; defined clear RACI for IT sub-units and established weekly operations reviews with monthly KPIs. Migrated from shared resources to a dedicated architecture over fiber; standardized configurations and access paths for predictable performance and easier troubleshooting. Designed primary/replica data flows for analytics and reporting; implemented stricter backup policies with restore drills; extracted reusable libraries and tuned PostgreSQL/MongoDB to cut latency and storage footprint. Improved security/governance with RBAC, access controls, and documented SOPs; containerized internal services with Docker and built lightweight admin/ops tools. Led cross-functional coordination and mentored staff.