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Added 2 days ago
Tech Lead Guidewire (Senior)
Groupe SII
Toronto, ON
Full-time
Minimum of three (3) years in a technical leadership, lead developer or application architecture role.
Added 3 days ago
Senior Integration Engineer
Agiloft
Canada
Full-time
We are hiring a Senior Integration Engineer to build and productize integrations between Agiloft and strategic ISV partners. This is a hands-on engineering role with regular partner…
Added 2 days ago
Core Java Developer with Apache Spark & Python Experience / Montreal, QC (Hybrid) - FTE
AceStack LLC
Montreal, QC
Full-time
We are seeking a Senior Java Developer with 7–12+ years of experience, with strong Core Java and backend development, Must have 3+ years of Apache Spark and Python, strong SQL/Linux skills,…
Added 2 days ago
Software Development Manager
EBlock Inc.
Canada
$160,000 to $180,000 CAD / year
Full-time
This role exists because the team is senior and self-directed enough not to need a full-time coordinator, and because we would rather its manager stay close to the work than drift away from…
Added 2 days ago
Principal Application Security Specialist
Global Relay
Vancouver, BC
The Principal Application Security Specialist is the most senior individual contributor across Global Relay's Software & Application Security function. Combining deep application security…
Added 3 days ago
Guidewire Tech Lead CC - Brokerage program
Maarut
Quebec, QC
Contract
architecture, mentoring) point to a hybrid profile between a senior developer
Added 2 days ago
Senior Java Software Engineer
Amaris Consulting
Montreal, QC
Full-time
We are seeking an experienced Senior Java Developer to join a growing Market Risk technology team. In this role, you will design, build, and enhance applications that support critical risk…
Added 3 days ago
Senior Back-End Developer
Royal Bank of Canada
Toronto, ON
Full-time
2+ years of experience writing code in a backend development language (Java/NodeJS).
Added 2 days ago
Principal Application Security Specialist
Global Relay
Vancouver, BC
Full-time
The Principal Application Security Specialist is the most senior individual contributor across Global Relay's Software & Application Security function. Combining deep application security…
Added 2 days ago
Senior Java Developer
Cognizant
Toronto, ON
$60,000 to $93,500 CAD / year
Full-time
As a Senior Java Developer, you will make an impact by designing, developing, and supporting scalable enterprise applications that drive critical business operations. You will be a valued…
Added 2 days ago
Backend Engineer, Consumer
HelloFresh
Toronto, ON
Technical Skills: Proficiency in back-end technologies and programming languages (e.g., Go, Java) and a deep understanding of distributed systems and microservices architecture.
Added 3 days ago
Staff Technical Lead – AI & Platform
Royal Bank of Canada
Toronto, ON
Full-time
As the senior technical leader, you will define the technical vision, lead an engineering team, establish engineering standards, and drive the adoption of AI-enabled software engineering…
Added 2 days ago
Senior Software Engineer – Full Stack (AI First)
Precisely International Jobs
Canada
We are seeking an experienced and technically strong Senior Software Engineer to join our Master Data Management (MDM) product line within Precisely’s Data Integrity Suite. In this role,…
Added 2 days ago
Sr. Principal AI Architect
Open Text Corporation
Richmond Hill, ON
As a Senior Principal AI Architect, you will shape how OpenText builds and operates AI solutions across its product portfolio. Working with architects and engineering leaders across…
Added 2 days ago
Java Software Engineer
Randstad Enterprise
Montreal, QC
Full-time
We are seeking a Java Engineer in the Firm Market Risk Technology team, you will design, build, and optimize high-performance Java systems powering the Firm Market Risk Platform. In this…
Added 2 days ago
Java Software Engineer
Maarut Inc
Longueuil, QC
Contract
The mandate is looking for a senior developer with 12 years of experience who can jump right in on existing Java, Spring, and AWS code to tackle technical debt and fix vulnerabilities,…
Added 2 days ago
Backend Java Developer
Hirematic Talent Solutions
Toronto, ON · Scarborough, ON
$50 to $55 CAD / hour
Contract
Senior Backend Java Developer (Bilingual: English/Spanish)
Added 3 days ago
Senior Fullstack Developer
CIBC
Toronto, ON
Full-time
Join our EAML Emerging Technology team as a Senior Application Developer (Full Stack), where you'll play a key role in designing, developing, and enhancing innovative applications that…
Added 2 days ago
Sr. Principal AI Architect
OpenText
Richmond Hill, ON
Full-time
As a Senior Principal AI Architect, you will shape how OpenText builds and operates AI solutions across its product portfolio. Working with architects and engineering leaders across…
Added 2 days ago
Java Developer
Experis
Alliston, ON
$80 to $90 CAD / hour
Contract
Senior Java Developer | HR Systems Modernization (SuccessFactors)
Added 2 days ago
Tech Lead Guidewire (Senior)
SII Canada
Toronto, ON
Full-time
Minimum of three (3) years in a technical leadership, lead developer or application architecture role.
Added 2 days ago
Sr. Principal AI Architect
OpenText
Waterloo, ON
Full-time
As a Senior Principal AI Architect, you will shape how OpenText builds and operates AI solutions across its product portfolio. Working with architects and engineering leaders across…
Added 2 days ago
Senior Principal AI Architect
OpenText
Waterloo, ON
Full-time
As a Senior Principal AI Architect, you will shape how OpenText builds and operates AI solutions across its product portfolio. Working with architects and engineering leaders across…
Added 2 days ago
Manager or Senior Manager, Scientific Research & Experimental Development - Technical (IT)
MNP
Montreal, QC · Quebec, QC
Full-time
Make an impact with our Scientific Research and Experimental Development (SR&ED) team as a Manger or Senior Manager, specializing in IT and Software. This diverse team of professionals…
Added 3 days ago
Senior Java Engineer – Backend & AI-Assistant Vice President
Citi
Mississauga, ON
Full-time
Citi is looking for a Senior Java Engineer to design and deliver high-performance backend systems at the intersection of enterprise software development and applied AI tooling. Based within…

AceStack LLC

Core Java Developer with Apache Spark & Python Experience / Montreal, QC (Hybrid) - FTE

Montreal, QC, Canada

Job type: Full-time
Apply by: Oct 18, 2026
Posting language: English
Posted: Sep 18, 2026

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Original job description

Job Title: Core Java Developer – Apache Spark & Python

Location: Montreal, QC

Work Model: Hybrid

Job Overview

We are seeking a Senior Java Developer with 7–12+ years of experience, with strong Core Java and backend development, Must have 3+ years of Apache Spark and Python, strong SQL/Linux skills, and experience building distributed data-processing/analytical applications.

Key Responsibilities

Design, develop, test, and maintain scalable server-side applications using Core Java and Python.
Develop and optimize large-scale data processing applications using Apache Spark.
Design and implement data processing solutions for high-volume and complex datasets.
Write, optimize, and troubleshoot complex SQL queries and database solutions.
Integrate analytical platforms and data processing systems with enterprise applications.
Develop and integrate RESTful APIs and microservices.
Apply strong knowledge of data structures, algorithms, object-oriented programming, and multithreading.
Troubleshoot application, data processing, and system performance issues.
Work extensively in Linux/Unix environments for application deployment, monitoring, troubleshooting, and production support.
Participate in application architecture, technical design, and code reviews.
Collaborate with business analysts, architects, data engineers, QA teams, and other stakeholders.
Follow coding standards, security practices, design principles, and software development best practices.
Support CI/CD pipelines, application releases, and overall application lifecycle management.
Contribute to improving application scalability, reliability, performance, and maintainability.

Required Skills & Qualifications

Strong hands-on experience in Core Java development.
Proven experience working with Apache Spark for distributed data processing.
Strong development experience with Python.
Strong proficiency in SQL and relational databases.
Solid working knowledge of Linux/Unix environments.
Experience developing server-side applications and microservices.
Experience designing and integrating analytical and data processing systems.
Strong understanding of:
Data Structures & Algorithms
Object-Oriented Design
Multithreading & Concurrency
Exception Handling
Performance Optimization
Hands-on experience developing and integrating RESTful APIs.
Strong debugging, troubleshooting, and problem-solving skills.
Experience working with large-scale data and high-performance applications.

Preferred Qualifications

Experience with cloud platforms such as AWS, Azure, or GCP.
Knowledge of the Hadoop ecosystem and related big-data technologies.
Experience with Docker and Kubernetes.
Familiarity with CI/CD and DevOps practices.
Experience working in Agile/Scrum development environments.
Experience in Financial Services or Capital Markets is a plus.

Key Competencies

Strong analytical and problem-solving abilities.
Ability to design and develop scalable, high-performance solutions.
Strong communication and collaboration skills.
Ability to work independently and effectively with cross-functional teams.
Strong focus on code quality, performance, reliability, and maintainability.
Ability to troubleshoot complex production and application issues.

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More about this job

Responsibilities

Design, develop, and maintain scalable server-side applications and large-scale data processing solutions using Core Java, Python, and Apache Spark. Collaborate with cross-functional teams to integrate analytical platforms while ensuring high performance, reliability, and adherence to coding standards.

Requirements

Requires 7–12+ years of experience in Core Java development with at least 3 years of hands-on experience in Apache Spark and Python. Candidates must possess strong SQL, Linux/Unix, and distributed systems knowledge, along with experience in microservices and API integration.

Skills

Core Java
Apache Spark
Python
SQL
Linux
Unix
Distributed data-processing
RESTful APIs
Microservices
Data structures
Algorithms
Multithreading
Object-oriented programming
CI/CD
Database solutions
Performance optimization

Visa sponsorship

Not detected in the job text

Keywords

Core Java
Apache Spark
Python
SQL
Linux
Unix
Distributed Systems
Data Processing
RESTful APIs
Microservices
Multithreading
CI/CD
Data Structures
Algorithms
Object-Oriented Design
AWS
Azure
GCP
Hadoop
Docker
Kubernetes
Agile
Scrum
Financial Services
Capital Markets
Backend Development
Performance Optimization
Production Support
Software Development
Data Engineering

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