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Bernard Simpson

@bernardsimpson

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Senior Full Stack Engineer with expertise in scalable web applications.

Greece

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What I'm looking for

I am looking for a role that fosters innovation, collaboration, and growth opportunities.

I am a Senior Full Stack Engineer with over 10 years of experience in building scalable web applications, particularly in startup environments. My expertise lies in integrating AI and machine learning to optimize processes and enhance user experiences. I have a strong track record of delivering projects end-to-end, utilizing modern frameworks and cloud technologies.

In my recent role at Teravision Technologies, I developed a stock trading and investment app that simplifies the investment process for beginner investors. I integrated various third-party APIs and utilized Next.js and React to create a seamless user interface. My experience also includes building an AI-powered healthcare SaaS project, where I implemented advanced technologies to generate accurate treatment plans. I am passionate about mentoring developers and thrive in collaborative, fast-paced settings.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Teravision Technologies

Mar 2023 - May 2025 (2 years 2 months)

Built a Brokerage: Stock Trading and Investment App, integrating third-party APIs like Alpaca, Kraken, Bybit, and IB for seamless broker and financial data connections. Developed the web application using Next.js and React, focusing on admin dashboard functionality and user interface, while implementing the core API with Node.js/Nest.js and TypeScript for stock and crypto trading.

Next.js React Node Nest TypeScript AWS Lambda API Gateway S3 SNS SQS Cognito Step Functions Stripe Kafka Redash Grafana

Senior Full Stack Engineer

CBT

Feb 2020 - Feb 2023 (3 years)

Developed an AI-powered SaaS healthcare project using Python, Flask, AWS, and PostgreSQL, enabling accurate treatment plan generation. Implemented an AI-driven summarizing process with OpenAI Chat GPT-3 for detailed treatment plans for various healthcare stakeholders. Created a dynamic user interface with ReactJS and Three.js, incorporating 3D visualizations and interactive elements.

Python Flask AWS PostgreSQL GPT 3 ReactJS Nginx Celery RabbitMQ Redis

Full Stack Engineer

Publisto

Jun 2017 - Jan 2020 (2 years 7 months)

Developed a microservice-based Online Banking SaaS Platform using NestJS, PostgreSQL, and AWS Cloud Platform services. Built a complex admin portal with NextJS, TailwindCSS, D3.JS, and GraphQL for real-time analytic data. Designed and implemented a Data Pipeline for an analytic system using Python, Kinesis, PostgreSQL, and Kafka.

NestJS PostgreSQL AWS Lambda ECS RDS SNS SQS DynamoDB Batch Next.js TailwindCSS D3.Js GraphQL Python Kinesis Kafka Redis IndexedDB CloudFormation GitHub Actions

Full Stack Developer

Netstudio

Jul 2014 - May 2017 (2 years 10 months)

Collaborated with cross-functional teams in product meetings, ensuring adherence to technical specifications and deadlines within Scrum and Sprints. Participated in the migration from RESTful APIs to GraphQL API, improving data fetching flexibility and reducing over-fetching/under-fetching issues, which augmented frontend performance. Implemented a complex and interactive user interface using Reac

React styled components Jest Cypress RESTful APIs GraphQL APIs Scrum Sprints

Education

Degrees, certifications, and relevant coursework

National Technical University of Athens

Bachelor of Science, Computer Science

Completed a comprehensive curriculum in Computer Science, covering core principles and advanced topics. Gained foundational knowledge in programming, algorithms, and software development methodologies.