Full Stack Engineering Intern

About the Role

Complyance is a fast-growing e-invoicing and tax compliance SaaS company. As an intern, you will contribute to real product development. Your core focus is AI-assisted full-stack product development, working across frontend and backend systems. You will implement well-defined features, investigate defects, and test your work. You will work on product areas including CRM workflows, project management systems, business process automations, integrations, and internal productivity tools. You will use approved AI coding assistants and coding agents responsibly, but must understand and take responsibility for all submitted work.

Key Responsibilities

• Ship real features: Build well-defined frontend and backend functionality across browser interfaces, APIs, application services, databases, integrations, and asynchronous workflows.
• Build CRM and project management features: Work on contacts, companies, leads, opportunities, pipelines, customer workflows, projects, tasks, assignments, statuses, and priorities.
• Automate business processes: Develop and maintain workflow automations using triggers, actions, conditions, scheduled jobs, notifications, and webhooks.
• Connect systems: Build and maintain third-party integrations and APIs.
• Write code you can stand behind: Read requirements and existing code, write clear, maintainable code, and create unit, integration, and browser-level tests.
• Fix what’s broken: Reproduce, investigate, fix, and verify defects, and grow through code reviews.
• Communicate and keep learning: Share progress, assumptions, risks, and blockers early, document important technical decisions, and explain your work.

How AI is Used

• Give AI tools relevant context, constraints, and a clear objective.
• Use AI to explore code, compare approaches, scaffold changes, generate tests, and debug errors.
• Review every AI-generated change before submitting, and remove invented APIs, unsafe defaults, duplication, weak tests, and unnecessary complexity.
• Verify output through your own reasoning, automated checks, and direct runtime testing.
• Use only approved tools, and protect credentials, source code, customer information, and regulated data.
• Understand and explain everything you submit.

Requirements & Tech Stack

• Strong fundamentals in at least one programming language: control flow, functions, modules, code organisation, data structures, error handling, asynchronous behaviour, and basic algorithmic trade-offs.
• Understanding of HTML, CSS, browser behaviour, and responsive interfaces.
• Completed at least one meaningful software project beyond a guided tutorial.
• Basic understanding of HTTP, APIs, databases, data modelling, Git, and pull requests.
• Methodical debugging skills and ability to explain the evidence behind a conclusion.
• Practical exposure to an AI coding assistant or coding agent while building software.
• Willingness to test carefully, accept direct feedback, and keep improving.
• Independent investigation, clear and useful question-asking, and good written and verbal communication.
• Up to one year of relevant experience is a plus, but not mandatory.

Bonus Points

• Basic familiarity with CRM concepts (contacts, companies, leads, opportunities, pipelines).
• Basic familiarity with project management concepts (projects, tasks, assignments, statuses, priorities, dependencies).
• Basic understanding of workflow automation (triggers, actions, conditions, scheduled jobs, notifications, webhooks).
• Exposure to building or consuming third-party APIs and integrations.
• Experience with automation platforms, workflow engines, or business applications.

Benefits

• Competitive base salary.
• Comprehensive benefits, including health insurance for you and your family and paid time off.
• Opportunity to build for a category shaped by regulation across fast-moving e-invoicing markets.
• Lean, collaborative team where work is visible and decisions matter.