Spectrum One is Hiring
The Opportunity
Spectrum One is a strategic engineering partner for high-growth startups and established corporations. Since 2015, we have helped our clients raise over $150M in funding by prioritizing capability over tenure.
We are currently looking for a
Senior MuleSoft Integration Developer for a technically demanding, 14–18 month remote contract. You will be tasked with building and owning the full integration layer for a government 311 Citizen Relationship Management platform. This is an independent build role where you will deliver the complete MuleSoft workstream from the ground up, integrating directly with a Salesforce implementation. We value the quality and scalability of your output above the length of your resume.
Who We Are Looking For
- You are a Professional: You take ownership of your work. You don't need to be micro-managed to deliver across multiple parallel integration streams. You are comfortable engaging directly with enterprise system owners to obtain API documentation, schemas, and endpoint access.
- You Value Craftsmanship: You write clean, maintainable, and efficient code. You are fluent in DataWeave 2.0 and comfortable building complex, branching transformations at scale. You care about the long-term health of the codebase, ensuring all integrations support idempotent replay, exponential backoff, and robust error handling.
- You Have High Agency: You identify problems and fix them before they are assigned. You are comfortable navigating the ambiguity of legacy on-premise systems, independently designing JDBC integrations, connection pooling, and transactional cleanups where REST or SOAP APIs do not exist.
Why Engineers Choose Us
- High-Trust Environment: We hire adults. We provide the context, and we trust you to execute. You will manage your own delivery with limited hand-holding, collaborating closely with our Salesforce developer and client stakeholders.
- Deep Work: We minimize arbitrary meetings to protect your focus time. You will have the space required to architect complex async event-driven integrations, configure Anypoint MQ, and build intricate DataWeave transformations.
- Enterprise-Scale Challenges: You will build a true Three-Tier API Architecture (Experience, Process, and System APIs) following MuleSoft API-led connectivity. Your work will handle real-world traffic, real-time data aggregation across multiple external sources, and secure data handling (including PII stripping) for government-level systems.
Why Join Spectrum One
- Real Strategic Influence: We expect engineers to drive technical decisions. You will have a direct hand in shaping the architecture and product roadmap.
- Autonomy by Default: We reject the traditional agency model of churn and burn. We provide the context and the goal, then we trust you to execute.
- A Culture of Excellence: You will be surrounded by high-performers who push you to be better. We believe in continuous evolution and provide the environment you need to do the best work of your career.
- Top-of-Market Compensation: High base salary benchmarked against industry standards.
- Team Building: A fully-funded, company-wide team building to celebrate our wins.
- Hardware & Gear: We provide the latest tech (MacBook Pro or equivalent) and other equipment to ensure your workspace is ergonomic and productive.
- Professional Development Budget: We provide an annual budget for courses, certifications, books, and conferences. We want you to stay sharp.
- Permanent Remote: Work from home or anywhere you are most productive.
About The Role
We're looking for a Senior MuleSoft Integration Developer to build and own the full integration layer for a government 311 Citizen Relationship Management platform, a Salesforce implementation and deliver the complete MuleSoft workstream from the ground up.
This is a technically demanding, independent build role. You'll work closely with our Salesforce developer and engage directly with the client's enterprise system owners to obtain API documentation, schemas, and endpoint access as the engagement progresses.
What You'll Be Building
Three-Tier API Architecture: Design and build a full suite of Experience, Process, and System APIs following MuleSoft API-led connectivity. Experience APIs serve as the system-agnostic entry point; Process APIs own all orchestration, routing, and transformation logic; System APIs are thin adapters, one per external system.
Async Event-Driven Integrations: Build bi-directional asynchronous integrations using Anypoint MQ. Outbound flows consume from queues, apply complex per-record-type DataWeave transformations, and deliver to downstream systems. Inbound flows receive events from external systems, transform to Salesforce-compatible format, and write back to Case records via the Salesforce System API.
Legacy System Integration via JDBC: Integrate with on-premise systems that expose no REST or SOAP API. Database-level integration only. Build flows that INSERT into and poll from staging tables via JDBC, handle transaction cleanup, and manage polling intervals through external configuration.
Real-Time Data Aggregation: Build synchronous aggregation APIs that receive a request from Salesforce, fan out parallel queries to multiple external data sources, aggregate all responses into a single composed payload, and return results in the same HTTP call. Source configuration is data-driven, so adding or removing sources requires no code changes.
Scheduled Batch Processing: Build a nightly batch job that queries Salesforce via the Bulk API, transforms output to a target schema (including PII stripping), and loads data into downstream staging tables via JDBC for ETL pickup.
Integration Control and Logging Database: Set up and maintain an external Azure SQL database as the centralized store for field mappings, routing rules, feature flags, polling intervals, and retry configuration. Implement in-memory caching with configurable refresh intervals and an on-demand reload endpoint so configuration changes take effect without redeployment.
Error Handling and Monitoring: Implement exponential backoff retry per integration, Dead Letter Queues for terminal failures, and automated alerting for queue health and message backlog. Build Anypoint Monitoring dashboards covering integration health, message volume, failure trends, and retry rates across all flows. All integrations must support idempotent replay.
Required
What We Need From You
DataWeave 2.0: You'll spend the majority of your time here. Must be fluent and comfortable building complex, branching transformations at scale.
MuleSoft / Anypoint Platform: 4+ years of hands-on CloudHub production experience. Strong grasp of API-led connectivity, Anypoint MQ, DLQ configuration, and Anypoint Secrets Manager.
JDBC Integration: Experience with direct database-level integration using SQL Server or equivalent: connection pooling, polling patterns, and transactional cleanup.
Salesforce Integration: Hands-on experience with the MuleSoft Salesforce Connector, Bulk API, and REST/SOAP callouts.
REST APIs and OAuth 2.0 / JWT: Comfortable consuming and producing authenticated REST APIs with OAuth 2.0 or JWT.
On-Premise Connectivity: Understanding of how MuleSoft CloudHub connects to on premise resources via Anypoint VPC and IPsec VPN tunnels.
SQL: Strong SQL skills for working with Azure SQL / SQL Server, covering both control database management and integration staging tables.
Independent delivery: Able to manage your own delivery across multiple parallel integration streams with limited hand-holding.
Nice to Have
MuleSoft Certified Developer (Level 1 or 2) or MuleSoft Certified Integration Architect
Experience with Salesforce Public Sector Solutions or Service Cloud
Familiarity with ArcGIS Online REST APIs and spatial / feature layer queries
Azure SQL provisioning and administration
Government or municipal technology implementation experience
Work Hours: Willingness and ability to work between 10:00 PM – 2:00 AM Philippine time to align with the US team
