The Role
The Senior Integration Engineer is responsible for designing and integrating APIs, managing backend inconsistencies, and collaborating with various teams to ensure smooth API functionalities across markets.
Summary Generated by Built In
About Qualysoft
· 25 years of experience in software engineering, established in Vienna, Austria
· Active in Romania since 2007, with office in central Bucharest (Bd. Iancu de Hunedoara 54B)
· Delivering End to End IT Consulting Services - From Team Augmentation and Dedicated Teams to Custom Software Development
· We deliver scalable enterprise systems, intelligent automation frameworks, and digital transformation platforms
· Cross-industry experience by sustaining global players in BSFI (Banking, financial services and insurance), Telecom,Retail & E-commerce, Energy and Utilities, Automotive, Manufacturing, Logitics, High Tech
· Global Presence: Switzerland, Germany, Austria, Sweden, Hungary, Slovakia, Serbia, Romania, and Indonesia
· International team of 500+ software engineers
· Strategic partnerships: Microsoft Cloud Certified Partner, Tricentis Solutions Partner in Test Automation and Test Management, Creatio Exclusive Partner, Doxee Implementation Partner
· Powered by cutting-edge technologies: AI, Data & Analytics, Cloud, DevOps, IoT, and Test Automation.
· Project beneficiaries ranging from large-scale enterprises to startups
· Stable growth and revenue increase year over year, a resilient organisation in volatile IT market conditions
· Quality-first mindset, culture of innovation, and long-term client partnerships
· Global and local reach – trusted by key industry players in Europe and the US
Qualifications
- Understanding of API design & consumption (REST, JSON, OpenAPI/Swagger);
- HTTP semantics (status codes, headers, idempotency);
- Working with API gateways (Apigee / IBM API Connect / similar);
- Client credentials, rate limiting, API products;
- Northbound / Southbound API separation;
- Integrating APIs with legacy backends (EAI, ESB, SOAP → REST);
- Handling partial failures and backend inconsistencies;
- Mapping / transformation between schemas;
- Cross‑market integrations (single API → many markets);
- CAMARA / GSMA Open Gateway concepts (high level);
- Working across different markets (RO, PT, ES, etc.);
- Dealing with vendor‑specific quirks behind a common API;
- OAuth2 / Client Credentials;
- mTLS, secrets handling;
- Cloud‑native Basics;
- Containers & Kubernetes (at least integration‑level understanding);
- Staying on recurring and ad‑hoc calls with product owners, network teams, API providers, security and consuming platforms;
- Clarifying API contracts, payload structures, error handling and edge cases in live discussions;
- Aligning expectations between API producers and consumers;
- Ensuring all parties have a shared understanding of responsibilities and ownership;
- Managing application configurations to match expectations.
What We Offer
· Premium medical package
· Lunch Tickets & Pluxee Card
· Bookster subscription
· 13th salary/yearly bonuses
· Enterprise job security with a startup mentality (diverse & engaging environment, international exposure, flat hierarchy) under the stability of a secure multinational
· A supportive culture (we value ownership, autonomy, and healthy work-life balance) with great colleagues, team events and activities
· Flexible working program and openness to remote work
· Collaborative mindset – employees shape their own benefits, tools, team events and internal practices
· Diverse opportunities in Software Development with international exposure
· Flexibility to choose projects aligned with your career path and technical goals
· Access to leading learning platforms, courses, and certifications (Pluralsight, Udemy, Microsoft, Google Cloud)
· Career growth & learning – mentorship programs, certifications, professional development opportunities, and above-market salary
*We are an equal opportunity employer and value diversity. All employment decisions are made without regard to age, gender, disability, race, ethnicity, religion, sexual orientation, or any other protected characteristic. We encourage applicants from all backgrounds to apply.*
Skills Required
- Understanding of API design & consumption
- Working with API gateways (Apigee / IBM API Connect / similar)
- Integrating APIs with legacy backends (EAI, ESB, SOAP -> REST)
- Mapping / transformation between schemas
- Basic understanding of Cloud-native technologies, Containers & Kubernetes
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The Company
What We Do
With 25 years of experience serving more than 250 international clients, we are a one-stop shop for IT services and digitizing business needs. Powered by more than 500 specialists in Central and Eastern Europe, we have the expertise to close the gap between technology and your business growth
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