Overview
We are looking for a Senior Full Stack Developer to take ownership of backend architecture and development for end-user self-service and access visibility solutions. This role combines architectural responsibility with hands-on development of APIs, scripts, and system integrations, with a robust focus on AWS-based solutions. You will work closely with technical and business stakeholders to translate requirements into secure, scalable, reliable, and maintainable applications while contributing to key architecture and design decisions.

Primary Location: Toronto, ON

Work Model: Hybrid 2-Days Onsite

Employment Type: Contractor

RESPONSIBILITIES:
Design and own backend architecture for self-service and access visibility capabilities
Develop and maintain backend APIs, scripts, and system integrations
Translate business and technical requirements into scalable backend solutions
Define technical standards and development approaches
Design solutions that are secure, reliable, maintainable, and aligned with architectural standards
Collaborate with technical and business stakeholders throughout the development lifecycle
Identify and address technical risks, dependencies, and integration requirements
Support testing, troubleshooting, deployment, and ongoing solution improvements
Provide technical guidance and contribute to architecture and design decisions
Maintain clear technical documentation for architecture, APIs, and integrations

QUALIFICATIONS, SKILLS & EXPERIENCE:
Experience with AWS and cloud-based application development
Experience in application architecture and hands-on backend development
Strong understanding of backend architecture, API design,



and systems integration
Experience developing scripts and automation solutions
Ability to design scalable, secure, and maintainable applications
Knowledge of software development principles, design patterns, and integration practices
Experience translating business requirements into technical solutions
Strong troubleshooting and problem-solving skills
Ability to collaborate effectively with cross-functional technical and business teams
Clear communication and technical documentation skills
Ability to take ownership of solutions from design through implementation

NICE TO HAVE:
Experience delivering end-user self-service solutions
Knowledge of identity and access management or access visibility concepts
Experience working with enterprise applications and complex system integrations
Experience providing technical leadership or mentoring developers
Understanding of DevOps, automated testing, and deployment practices

ABOUT ADASTRA
Adastra is a global leader in AI and data-driven transformation, helping organizations lead with artificial intelligence - responsibly, strategically, and at scale. With over 25 years of experience, Adastra empowers enterprise clients to unlock business value through data innovation, operational excellence, and smart customer engagement.





Trusted by some of the world's most prominent brands, Adastra delivers end-to-end solutions grounded in thoughtful strategy, robust governance, and deep technical expertise. From defining vision to ensuring execution, Adastra guides organizations through every stage of their AI, data and cloud journey-building future-ready capabilities and delivering measurable, lasting impact.

Adastra serves clients across key industries including financial services, automotive, manufacturing, technology, media and telecom (TMT), healthcare, retail, and professional services. The company employs more than 2,000 professionals across North America, Europe, and Asia.

WHAT WE OFFER
Opportunity for advancement and career progression
Competitive compensation
Successful referral program
The opportunity to work with one of Canada's 50 Best Managed Companies
Satisfaction of working for a reputable company
A flexible, dynamic, and diverse workplace

EQUAL OPPORTUNITY EMPLOYER
In our commitment to promote fair and equitable treatment of all employees and applicants, Adastra Corporation provides equal employment opportunities for all individuals regardless of age, sex, disability, race, ethnic origin, citizenship, creed, sexual orientation, marital status, or any other ground as described in the Ontario Human Rights Code. In addition, accommodation will be provided during the hiring process. Adastra Corporation's implementation and support of employment initiatives, encourage diversified labour force participation and equal access to opportunities based on merit and performance.

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📌 Senior Full Stack Developer (AWS) (Ontario)
🏢 Adastra
📍 Ontario