Senior Full Stack Integrations Developer

Senior Full Stack Developer (Integrations Focus)

Description

About Octopus HR

Octopus HR is a fractional HR consultancy that partners with high-growth startups to build exceptional teams. We specialize in talent acquisition, people operations, and HR strategy for innovative companies scaling rapidly. We’re proud to partner with Pluvo on this search.

The Opportunity

Pluvo is seeking an experienced

Senior Full Stack Developer

with a strong integrations and data-platform background to join the team at a critical stage of scale. This role is centered on building and maintaining complex enterprise integrations, scalable data pipelines, and high-performance systems that power a finance-focused SaaS product used every day by customers.

Responsibilities

Integration Architecture & Data Stack

Build and maintain integrations with accounting systems such as QuickBooks, Xero, and NetSuite

Design robust data pipelines connecting CRM, HR, and financial platforms

Work with data warehousing solutions (Snowflake or similar) to manage and analyze multi-source data

Ensure data integrity, security, and reliability across all integration points

Optimize SQL queries and database performance for large-scale data operations

Design and build scalable APIs capable of handling high volumes of financial and enterprise data

Performance Optimization & Scalability

Diagnose and resolve memory issues and performance bottlenecks causing system instability

Architect backend services and APIs that support growing data volumes and user traffic

Optimize database queries and implement caching strategies to improve response times

Design systems with horizontal scalability and long-term growth in mind

Database Engineering & Security

Lead database design and optimization, ensuring data is stored, accessed, and scaled securely and efficiently

Implement secure, scalable storage solutions using PostgreSQL or similar technologies

Champion data integrity, encryption best practices, and compliance standards

Full Stack Development

Build and maintain high-performance frontends using Next.js and TypeScript

Own backend development in Node.js, creating clean, well-documented APIs

Implement and maintain CI / CD pipelines to streamline deployments and reduce manual overhead

Ship new features from concept to production with end-to-end ownership

Team Leadership & Mentorship

Coach and mentor junior developers by sharing knowledge, setting standards, and providing thoughtful code reviews

Foster a high-quality engineering culture grounded in collaboration and continuous improvement

Help establish and reinforce best practices around performance, security, and code quality

Cross-Functional Collaboration

Work closely with Leadership, Product, Design, and QA to deliver high-quality features

Participate in sprint planning and lead technical discussions that shape product outcomes

Communicate complex technical concepts clearly to non-technical stakeholders

Requirements

5+ years of full-stack development experience building and operating production systems at scale

Strong experience building third-party integrations, particularly with accounting or enterprise SaaS platforms

Experience across the full data stack, including SQL, data warehousing (Snowflake or similar), and CRM / HR / ERP integrations

Demonstrated ability to manage complex, multi-source data while maintaining data quality and integrity

Strong cloud infrastructure experience, especially with AWS (EC2, RDS, Lambda, S3, CloudWatch)

Proven track record of performance optimization and solving scalability challenges

Deep expertise in TypeScript / JavaScript and modern full-stack development

Expert-level experience with Next.js or React frameworks

Extensive experience with database design, optimization, and scaling (PostgreSQL strongly preferred)

Strong understanding of system architecture and designing for reliability and scalability

Passion for clean code, security best practices, and modern software architecture

Proven ability to solve problems creatively and effectively

Excellent verbal and written communication skills

Experience with Git-based workflows (GitHub preferred)

Demonstrated experience mentoring and coaching junior developers

Experience working in agile environments using tools such as Jira

Nice to Haves

Experience working with LLMs, AI / ML models, or predictive analytics systems

Experience building BI tools, data visualization platforms, or analytics products

Familiarity with AI-powered presentation or reporting tools

Experience with Java

Knowledge of the financial industry or experience working in a fintech SaaS company

Familiarity with FP&A platforms such as Causal, Pigment, or similar

Experience with DevOps practices and infrastructure as code

Previous experience at a high-growth, VC-backed startup

Experience with Python for data science or ML workflows

Benefits

Impact :

Your work will directly support the scalability, reliability, and data integrity of a mission-critical product

Technical Challenges :

Tackle real-world problems across integrations, data pipelines, and system performance

Team :

Join a collaborative, experienced engineering team that values ownership and quality

Growth : Influence technical direction and grow into broader technical leadership responsibilities

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