Senior Software Developer

Perseus Group; Karachi Division; On-site; PKR 2,400,000 - 6,000,000; Full time

Benefits offered by this job

Market-leading Salary

Medical Coverage – Self & Dependents

Parents Medical Coverage

Provident Fund

Employee Performance-based bonuses

Home Internet Subsidy

Conveyance Allowance

Profit Sharing Plan [Tenured Employees

Life Benefit

Child Care Facility

Company Provided Lunch/Dinner

Professional Development Budget

Recreational area for in-house games

Sporadic On-shore trainingOpportunites

Friendly work environment

Job summary

Contour Software in Karachi is seeking a senior VB6 desktop developer to own and modernize legacy Windows applications built on VB6 and COM. You will work with the Desktop Team Lead, use Claude Code AI tools, and help plan the migration path from VB6 to the web.

You will deepen code understanding, add tests, improve build and release pipelines in GitHub and Azure DevOps, mentor teammates, and contribute to an AI-driven development lifecycle while maintaining reliability for customers.

Qualifications

• 6+ years of professional software development with VB6 in production environments.
• Deep understanding of Windows desktop architecture, data access, and VB6 debugging.
• Strong working knowledge of the COM model/ActiveX and legacy 32-bit behavior on modern Windows.
• Experience reading and documenting large legacy codebases and creating clear descriptions.
• Daily hands-on use of Claude Code or similar AI coding tool.
• Working understanding of AI-DLC and its application to legacy code.
• Experience with GitHub and Azure DevOps (ADO).
• Proven ability to weigh risk and explain tradeoffs to non-technical leaders.

Responsibilities

• Lead VB6 desktop product fixes, enhancements, and releases.
• Improve build, test, and release processes for desktop products.
• Mentor Desktop team members and document learnings.
• Collaborate with Product, Infrastructure & IT on deployments.
• Use Claude Code to analyze and document legacy code and identify risk.

Skills

VB6

Windows desktop

ActiveX/COM

Claude Code

AI-DLC

Code analysis

Tools

GitHub

Azure DevOps

Job description

About Contour

Contour Software has grown from a dozen people to over 2,000 staff across 3 cities, in less than 14 years. As a subsidiary of Constellation Software Inc., we are proud to be part of a global enterprise software conglomerate that has grown to become one of the top 10 software companies in the world, with employees and customers in 100+ countries. With a broad-based and ever-growing portfolio of market-leading, vertical-market enterprise solutions covering more than 100 industry domains in predominantly mature markets, CSI's recipe creates the perfect environment for professionals to build fulfilling, long-term careers. What started as an R&D & Accounting back-office, has progressed into a full-service Global Centre serving all functions and departments, at the divisional as well as operating group/corporate level. Today Contour employees, located in Karachi, Lahore & Islamabad, are serving CSI divisions located in time zones spanning the globe, from Sydney to Vancouver. With the global growth of Constellation as the wind in our sails, we are only just getting started!

Role summary

We're hiring a senior developer for our Desktop team. The team owns our current desktop products, which are Windows applications built on Visual Basic 6 (VB6) and COM, and which customers depend on everyday, while CalcAir builds modern web versions of those products. This is a lasting senior role for an engineer who knows VB6 deeply and uses AI tools to understand, document, and safely improve existing code. Our desktop products will stay in service for as long as customers depend on them, and you'll help keep them reliable, make the team's day‑to‑day work smoother, and help plan the path from VB6 to the web. We're adopting an AI-Driven Development Lifecycle (AI-DLC) approach, where AI takes on more of the analysis and building while engineers set direction, review the work, and make the decisions that matter. You'll work with our Desktop Team Lead and the Desktop team, with Product, and with Infrastructure & IT on builds and releases.

What you’ll accomplish in your first year

First 90 days: Learn our VB6 codebase and the business rules behind it. Use Claude Code to map the highest-risk areas and document how they work. Get comfortable with our GitHub and Azure DevOps (ADO) workflows, and note where the team's process creates the most friction.

By 6 months: Add tests around critical workflows so changes are safer. Lead a set of fixes or improvements from planning through release, using AI-DLC checkpoints. Make the first improvements to how we build, test, and release. Share practical AI techniques for legacy code with the team.

By 12 months: Help define the path from our VB6 products to the web, including which business rules to carry forward and which to rebuild. Deliver the first meaningful piece of that work, and keep improving how the team works along the way.

Responsibilities

Desktop product support. Lead the technical work on VB6 desktop products, including defect fixes, enhancements, and releases. Serve as the senior technical resource for hard problems and critical customer issues. Keep current products stable, supportable, and documented for as long as customers depend on them.

Process and workflow improvement. Find and fix the slow, manual, or error-prone steps in how we build, test, and release desktop products. Improve how we use GitHub and Azure DevOps (ADO), so work is tracked, reviewed, and released consistently. Use Claude Code to automate repetitive work in analysis, testing, and documentation. Turn what works into shared team practices, so the whole team benefits.

Legacy code understanding and modernization. Use Claude Code to analyze VB6 code: map workflows, extract business rules, and identify risk before changes are made. Write and maintain characterization tests that capture current behavior, so the web versions can be checked against it. Work with Product to decide which business rules and behaviors carry forward into the web products.

AI-assisted development. Use Claude Code as a regular part of your daily work for analysis, changes, tests, and documentation. Apply AI-DLC practices and help the Desktop team use AI safely on legacy code. Review AI-generated changes carefully, especially in code with little test coverage.

Collaboration and delivery. Work in GitHub for source control and pull requests, and in Azure DevOps (ADO) for work items and tracking. Partner with Infrastructure & IT on builds, releases, and environments. Mentor Desktop team members and document what you learn, so it isn't held by one person.

Required qualifications

6+ years of professional software development, including substantial production work in VB6. Deep understanding of Windows desktop application architecture, data access, and debugging VB6 applications. Strong working knowledge of the COM model, ActiveX components, the Windows registry, and how legacy 32-bit applications behave on modern Windows systems. Experience reading and documenting large legacy codebases, and turning them into clear descriptions of how things work. Daily, hands‑on use of Claude Code or a comparable agentic coding tool, with examples you can walk us through. A working understanding of AI‑DLC and how it applies to legacy work. Experience with GitHub and Azure DevOps (ADO). A track record of improving team processes and workflows, such as build, test, and release steps, and making the changes stick. Senior-level judgment: you can weigh risk, explain tradeoffs to non-technical leaders, and say when something should wait.

Nice to have

Experience migrating VB6 or other legacy Windows applications to .NET or the web. Experience with .NET/C#, React, or SQL Server, to help with the path to the web. Experience writing characterization or regression tests for legacy systems. Experience building AI-assisted workflows for a team, such as custom skills, agents, or MCP integrations. Experience with Azure DevOps (ADO) pipelines.

Exciting Benefits we offer

• Market-leading Salary
• Medical Coverage – Self & Dependents
• Parents Medical Coverage
• Provident Fund
• Employee Performance-based bonuses
• Home Internet Subsidy
• Conveyance Allowance
• Profit Sharing Plan [Tenured Employees Only]
• Life Benefit
• Child Care Facility
• Company Provided Lunch/Dinner
• Professional Development Budget
• Recreational area for in-house games
• Sporadic On-shore training opportunities
• Friendly work environment

Disclaimer: At Contour, we attribute our success to the unique contributions of our diverse staff. We’re committed to fostering a culture of respect that thrives on the varied perspectives and experiences of all individuals we recruit, employ, promote, and compensate. Since day one, we’ve adhered to a policy that champions a work environment honoring the worth and dignity of each person while being free from all forms of employment discrimination. In our continuous effort to promote inclusivity, we extend our commitment to individuals with special needs by providing reasonable accommodations. We actively encourage qualified individuals with special needs to apply for the various openings within our company. Should you require assistance in completing the application process or have any inquiries regarding special facilities, please do not hesitate to contact our HR team. Your unique talents and abilities are welcomed and valued here.

As a subsidiary of CSI, Contour Software serves as a dedicated Global Centre, currently housing employees and teams for more than 150 Divisional and Corporate departments. Contour employees are key players in implementing, supporting, extending, enhancing, and renewing enterprise systems that run thousands of medium and large businesses, as well as public institutions, globally!