Senior Developer

We are seeking a highly skilled Senior Developer with deep expertise in Apache NiFi to lead the design, development, and implementation of critical data automation and integration initiatives. The core focus will be on leveraging NiFi to build scalable, secure, and efficient data pipelines for key initiatives, including data automation, historical data access, and auditing processes. The successful candidate will be responsible for the full lifecycle of development, from gathering requirements and design through to production rollout and support. This is a hybrid role based in Toronto, requiring the consultant to work seven (7) hours per day, five (5) days per week during normal business hours.Duration: 6 months (with potential 6-month extension)Advantages- Hybrid Work Model: Flexibility with remote work options combined with in-office collaboration in Toronto.- High Impact Initiatives: Lead projects critical to automating key operational data, providing immediate and measurable value.- Cutting-Edge Technology: Work at a senior level with Apache NiFi in a complex, high-volume data environment.- Professional Leadership: Opportunity to lead development efforts, mentor others, and establish best practices.ResponsibilitiesAs a Senior NiFi Developer, you will be responsible for:- Leading the entire development lifecycle for data initiatives, including Stay Data Automation, Photo Card Automation, Historical Data Access, Data Scraping Service, and Bi-Weekly Audits.- Gathering and validating requirements from stakeholders to ensure accurate and complete scope definition.- Designing and developing complex data integration workflows using Apache NiFi, optimizing for high-throughput, low-latency data processing.- Implementing ETL (Extract, Transform, Load) pipelines to integrate diverse data sources (APIs, databases, file systems) and sinks.- Writing custom code and scripts (Java, Groovy, Python) for automation and complex transformation logic within NiFi.- Configuring, managing, and optimizing NiFi dataflows, utilizing the NiFi Expression Language for dynamic processing.- Contributing to the production rollout and ongoing support of all deployed data flows, including troubleshooting and defect resolution.- Collaborating with cross-functional teams (DevOps, Data Engineers, Analysts) to ensure seamless integration and deployment.- Developing and updating technical and business process documentation, including functional specifications.- Mentoring junior team members and enforcing best practices for NiFi development, security, and performance.QualificationsMust-Have Experience:- 5+ years of hands-on experience working with Apache NiFi, including large-scale, production-grade deployments.- Deep understanding of NiFi architecture, components, and dataflow concepts.- Expertise in designing and implementing high-performance ETL pipelines for data from databases, APIs, and file systems.- Proficiency in Java, Groovy, and/or Python for developing custom NiFi processors and scripts.- Strong experience with relational databases (SQL) and knowledge of data formats (JSON, XML, CSV, etc.).- Experience with DevOps practices, including containerization (Docker/Kubernetes) and CI/CD pipelines (Jenkins/GitLab) for automating NiFi flow deployments.- Strong ability to analyze complex data integration challenges, design efficient solutions, and conduct rigorous debugging and troubleshooting.- Excellent written and verbal communication skills, with experience documenting data flows and communicating technical concepts to stakeholders.Assets:- Knowledge of Big Data Ecosystem tools (Kafka, Spark, Hadoop).- Understanding of cloud-based data platforms (AWS, Azure, or Google Cloud) and NiFi integration.- Experience with NiFi security features (SSL/TLS, authentication, authorization).- Familiarity with monitoring and performance tuning tools (Prometheus, Grafana, or NiFi's built-in tools).- Experience with data governance, lineage, and data quality frameworks.SummaryIf you're interested in the Senior Developer role based in Toronto, we encourage you to apply online at www.randstad.ca.Only qualified candidates will be contacted for the next steps. We look forward to hearing from youRandstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to accessibility@randstad.ca to ensure their ability to fully participate in the interview process.