Why Companies Hire System Integration Engineers From Us
You Interview. You Decide. You Can Say No.
Nobody gets assigned to your integration squad without your approval. You see named profiles with API, ETL and ERP connector work you can verify, run your own technical interview, and reject anyone for any reason. We would rather send three system integration developers and have you pick one than push a warm body into a seat.
A Paid Trial Before Any Commitment
Two weeks of real work on your actual pipelines, at the agreed rate, with no long-term obligation. Interviews tell you how well someone talks about Kafka. A fortnight of pull requests tells you whether they understand your idempotency keys, whether they respect your OAuth scopes, and whether they can ship through your release gates without drama.
Integration Depth, Not Just API Tutorials
Consumer API experience is not the same as enterprise integration delivery. The parts that go wrong are duplicate webhook deliveries, SAP rate limits, SAML certificate rotation, and ETL jobs that silently double-post transactions. Our system integration engineers have lived through those problems on systems that are still in production.
HQ, US Hours, National Coverage
We are headquartered at 350 Bay Street in US and work on Eastern time by default, with genuine overlap against Pacific through Atlantic. Engineers join your stand-up, answer in Slack the same afternoon, and do not leave a failed sync sitting overnight.invoicing and PIPEDA-aware delivery are standard for US integration programmes.
Roles
System Integration Engineer Roles You Can Hire
Hire one system integration engineer, a pair, or a complete dedicated integration team. Every role below can be engaged full-time, part-time or on‑demand for a fixed window.
API Integration Engineer
- REST, GraphQL and SOAP contract design.
- Webhook receivers with retry and idempotency.
- OpenAPI specs your partners can consume.
Middleware & iPaaS Developer
- MuleSoft, Boomi and custom ESB patterns.
- Light Zapier or Make for quick wins.
- Transform maps that survive schema changes.
ERP Integration Specialist
- SAP, NetSuite and Dynamics connectors.
- Order, inventory and master data sync.
- Rate limits and audit trails handled.
Salesforce Integration Developer
- CRM to ERP and marketing automation ties.
- Platform events and bulk API patterns.
- Keeps Salesforce from becoming a silo.
Event Streaming Engineer
- Kafka, RabbitMQ and Azure Service Bus.
- Dead-letter queues and replay tooling.
- Event-driven architecture at scale.
Cloud Integration Engineer
- AWS API Gateway and Lambda connectors.
- Azure Logic Apps and Service Bus flows.
- Serverless patterns for partner APIs.
Identity & SSO Integration Engineer
- OAuth 2, OIDC and SAML handoffs.
- Azure AD, Okta and custom IdP wiring.
- Token refresh without silent failures.
Amazon API Developer
- SP-API, AWS SDK and marketplace feeds.
- Inventory and order sync automation.
- Rate limits and throttling handled.
Legacy Integration Developer
- RequireJS frontends tied to modern APIs.
- Preact glue for embedded UI widgets.
- Riak and RocksDB data store bridges.
Complete Integration Pod
- Lead, two engineers, QA and architect.
- Ships a connector programme end to end.
- For a rollout with a real deadline.
Staff Augmentation at Scale
- Several integration developers into existing squads.
- Your process, your board, your standards.
- Scale down with a month’s notice.
Interview first. Commit later.
Book A Free Consultation ›We needed someone who understood our SAP connector and idempotent ETL, not just someone who could call REST endpoints. The system integration engineer we hired here mapped our data flows in the first week and caught a duplicate-post bug our previous contractor missed for months.Director of IT, Manufacturing Company
What to Expect When You Hire System Integration Engineers
Business Priorities
Industry Gaps
Our Proven Advantage
Global Standards. Built-In Trust.
Integration pipelines carry financial transactions, employee records and often regulated data, so the engineers we place work to controls rather than to good intentions. That means signed NDAs and IP assignment before repository access, background-checked staff, OAuth and SAML handled properly rather than hard-coded, encrypted credentials in vaults, and release pipelines your security team can audit. Where your programme falls under PIPEDA, HIPAA, PCI DSS or SOC 2 expectations, we align to your existing programme and provide the documentation your reviewers ask for.
Book a Free Consultation
Half an hour, no charge. Bring the integration role you are trying to fill, whether you need API, ETL or ERP connector depth, and the deadline you are working against. You will leave with a realistic rate range, an honest read on whether you need one system integration engineer or a pod, and profiles to review if it looks like a fit.
Hire System Integration Engineers Without the Agency Runaround
Review boards including Clutch, DesignRush and GoodFirms list OSDY LLC among the stronger integration and software firms in North America. Teams come to us to hire system integration developers for a single seat, to staff data integration engineers for an ETL programme, or to embed dedicated integration experts inside an existing IT squad. Affordable here means senior judgement at a rate that does not require a Bay Street payroll for every contractor, not the cheapest resume in a marketplace inbox.
What Our System Integration Engineers Work With
Grouped the way you would assess an integration hire rather than as a logo wall. API protocols, middleware, messaging, ERP connectors and identity matter more than picking one trendy tool.
REST APIs 
SOAP & WSDL 
Webhooks 
OpenAPI / Swagger 
ESB Patterns 
MuleSoft Anypoint 
Dell Boomi 
Make (Integromat) 
Custom Middleware 
Amazon SQS & SNS 
Azure Service Bus 
Event-Driven Architecture 
Dead-Letter & Retry Queues 
Salesforce 
Oracle NetSuite 
Microsoft Dynamics 
ServiceNow 
EDI & B2B Trading AWS API Gateway Amazon APIs (SP-API, AWS SDK) Azure Logic Apps Azure Service Bus 
Serverless Connectors 
Database ETL Pipelines 
Riak (legacy stores) 
RocksDB (embedded sync) 
Change Data Capture 
OAuth 2 & OIDC 
SAML & SSO Azure AD / Entra ID 
API Keys & mTLS 
Secrets Management 
Vonage / Nexmo SMS APIs RequireJS (legacy frontends) 
Twilio & CPaaS 
Shopify & eCommerce APIs How to Hire System Integration Engineers, Step by Step
Five stages, Brief, Match, Interview, Trial and Scale, with your veto at every one of them.
Brief
A half-hour call about the role rather than about us. Do you need API integration engineers, database integration engineers or ERP connector specialists? Is the work greenfield pipelines, legacy middleware rescue or a rollout under a hard deadline? Who reviews pull requests today, and what breaks if this seat stays empty for another two months? We will also ask what you are budgeting , because a rate expectation that does not match the seniority you are describing is better surfaced in the first call than after three interviews. If what you actually need is fixed-scope systems integration consulting rather than a hire, we will say so and point you to our system integration services page.
Match
Within two to four business days you get a shortlist, normally two to four system integration engineers rather than a database dump. Each profile carries real detail: connectors they shipped, ETL and idempotency patterns they owned, SSO and ERP integrations they maintained, and their committed overlap hours. We put forward people we would put on our own projects, and we would rather send you two genuine fits than six padded profiles.
Interview
You run your own technical interview, on your terms, with as many rounds as you want. Use your existing loop if you have one, or use the eight questions further up this page if you do not have an integration specialist internally to run the screen. We can supply a take-home or a live pairing exercise if that suits you better. Nobody is placed on your team without your explicit yes, and rejecting a candidate takes one sentence with no explanation owed.
Trial
Two weeks of paid work on your real pipelines, at the agreed rate, with no commitment beyond those two weeks. This is where you learn the things interviews cannot show you: whether they understand your OAuth scopes, whether their pull requests are reviewable, whether they raise an idempotency problem on day two instead of quietly burning a week, and whether the overlap hours work in practice. If it is not right, you stop, you pay for the two weeks, and we go back to matching at no cost.
Scale
After the trial the engagement runs month to month on thirty days’ notice from either side. Scale up by adding integration developers who go through exactly the same process, or scale down when a connector programme ships and the workload drops. Code stays in your repository, credentials stay in your vaults, and documentation is written as work happens rather than assembled in a panic at the end. If you eventually hire someone permanent to replace the seat, we will help with the handover instead of making it difficult.
How to Choose the Right Dedicated Integration Engineer
Most of the value in this page is not the pitch, it is the context that helps you buy well. These are the questions US clients ask us most often, answered as we would answer them on a call.
The three that change outcomes most are API vs ETL vs ERP connectors, seniority vs headcount, and whether you need a person or a project.
Where our own interest conflicts with the honest answer, we have tried to say so plainly.
business days to a shortlist you can interview
week paid trial before any commitment
client reviews across our US work
average client rating
Projects We Have Delivered
Empowering Future Talent in Trades and Technology
Commissioned by Skills US, we built a national bilingual platform with native apps, a secure CMS, and cloud infrastructure to promote trades and technology careers at scale.
Digitizing Wildlife Surveillance for National Resilience
For the Wildlife Health Cooperative, we replaced siloed tools with a cloud-native platform that unifies field reports, lab diagnostics, and cross-province analytics in real time.
Interactive Learning Through Digital Experience
We unified kiosks, ticketing, and mobile into one cloud-native platform for Seattle Aquarium, raising visitor engagement and streamlining operations across every touchpoint.
Industries Our System Integration Engineers Work In
Domain context shortens the ramp. These are the sectors where our integration developers have shipped production connectors and data pipelines.
Healthcare & Life Sciences
Healthcare & Life Sciences
- HL7 and FHIR connector experience.
- SSO into clinical and back-office systems.
- Secure ETL for patient and billing data.
Financial Services & Insurance
Financial Services & Insurance
- Idempotent payment and ledger sync.
- Audit trails and role-based access.
- Core banking and policy system ties.
Manufacturing & Industrial
Manufacturing & Industrial
- ERP and MES integration.
- Shop floor data pipelines.
- Offline sync for plants with poor connectivity.
Logistics & Supply Chain
Logistics & Supply Chain
- TMS and WMS connector work.
- EDI trading partner automation.
- Real-time inventory visibility APIs.
Retail & Consumer
Retail & Consumer
- POS and eCommerce sync.
- Amazon SP-API and marketplace feeds.
- Inventory and loyalty integrations.
Energy & Utilities
Energy & Utilities
- Field technician data flows.
- Asset management system connectors.
- Safety and work order integrations.
Government & Public Sector
Government & Public Sector
- Secure auth and audit logging.
- Legacy system modernization bridges.
- Documentation procurement teams expect.
Telecom & Media
Telecom & Media
- OSS/BSS companion integrations.
- High-throughput subscriber APIs.
- Event-driven billing pipelines.
Real Estate & PropTech
Real Estate & PropTech
- CRM and listing sync.
- Document workflow connectors.
- Tenant portal integrations.
Pharma & MedTech
Pharma & MedTech
- Validated data pipelines.
- Clinical and lab system ties.
- GxP-aware release processes.
Travel & Hospitality
Travel & Hospitality
- Booking engine connectors.
- Works on unreliable hotel networks.
- Loyalty and payment back-end ties.
High-Tech & SaaS B2B
High-Tech & SaaS B2B
- Product API and webhook design.
- Enterprise SSO and admin portals.
- Multi-tenant integration patterns.
Hire System Integration Engineers Who Have Shipped Under Real Load
The market is full of API tutorial contractors and thin on system integration engineers who have carried idempotent ETL, ERP connectors and SSO handoffs through production incidents. Our screening is built around that gap. Every engineer we put forward has production work they can discuss, has shipped under compliance pressure rather than only in side projects, and can talk about a sync that stalled and how they fixed it. You interview them, you run a paid trial, and you keep only the ones you want.
Companies come to us to hire system integration engineers for a single seat, to hire data integration engineers for an ETL programme, to staff database integration engineers for legacy migrations, and to hire integration developers for a longer programme. We staff mid-level through to lead across REST, GraphQL, MuleSoft, Boomi, Kafka, Salesforce, SAP, Azure and AWS. Niche briefs are fine too: hire Nexmo engineers for SMS API work, hire RequireJS engineers for AMD frontends still talking to modern backends, hire Preact engineers for embedded widgets, and hire Riak engineers or hire RocksDB developers when those stores sit behind your sync layer.
People describe this search in a dozen ways and they all reach the same place. Hire system integration developers. Integration developers for hire. Database integration engineers and data integration engineers for pipeline work. Amazon API developer for hire for marketplace sync. Systems integration consulting when you need a firm to own a deliverable, which lives on our system integration services page. Dedicated integration experts on a monthly basis. Integration engineers teams searching for Bay Street overlap and quotes. The model flexes, the bar does not.
Related pages: system integration services, hire enterprise app developers, hire app developers, hire ERP consultant, Salesforce application development, IT staff augmentation and software development company.
Book A Free Consultation →
Frequently Asked Questions
Interview. Trial. Then Decide.
Tell us the integration role and we will send engineer profiles you can assess within a few business days. No commitment until after the trial.
Book A Free Consultation → 