Career as a Submarine Cable Engineer in India: Salary, Courses and How to Begin

Telecommunications & 5G/6G Networks Oceanography & Marine Engineering

Updated 30 Oct 2026

At a glance

A submarine cable engineer designs, lays, tests and repairs the fibre-optic cables that run along the seabed to carry international internet traffic.

A submarine cable engineer designs, lays, tests and repairs the fibre-optic cables that run along the ocean floor and carry internet traffic between countries. The work sits where telecom engineering meets marine engineering, which is why it is one of the least-known roles behind everyday internet use.

The undersea cables that link India to the rest of the world are central to its internet, so the people who plan and maintain them do important work. Most students enter through an engineering degree in electronics, telecommunications or electrical engineering, then build cable and marine skills through specialised training or on the job.

This is a niche field. There is no single well-known course for it in India, and public information on hiring is limited. Use this page as a starting map, and check current job listings and employer requirements before you plan your studies.

Minimum Qualification: Class 12 with Physics, Chemistry and Maths
Typical Degree: B.E./B.Tech in Electronics, Telecom or Electrical
Expected Entry Salary: To be verified before publishing
Entry-level to Senior: To be verified before publishing
Job Demand Growth: Niche; tied to telecom and data cable build-outs
Work Hours: Project-based; ship and offshore spells possible
Places of Work: Cable ships, shore stations, offices, factories

What Does a Submarine Cable Engineer Do?

Day-to-Day Responsibilities

Route survey planning: reviewing seabed maps, water depth and terrain to choose where the cable will run and where it will come ashore.
Cable system design: specifying the fibre count, power feed, amplifiers or repeaters and protective armouring for each section of the route.
Testing: checking optical and electrical performance of cable and joints before and after installation.
Laying and burial supervision: overseeing cable-laying operations from a cable ship, including the shore end, and arranging burial where the cable needs protection from anchors and fishing gear.
Jointing and repair: coordinating splicing work and locating and fixing faults when a cable is damaged.
Cable health monitoring: using optical monitoring and fault-location tools to spot breaks and track degradation early. Fibre-based monitoring is also being promoted for power and telecom cables, as seen in Sterlite Electric's 2026 announcement of a fibre-optic sensing platform.
Coordination and documentation: working with marine crews, telecom operators, regulators and contractors, and keeping detailed project and as-built records.

Where They Work

Submarine cable engineers in India are typically employed by telecom and submarine network operators, cable-system contractors and marine survey or installation companies. Large data-centre and cloud companies that build their own network links also hire people with cable and optical expertise. Employer names and hiring patterns should be checked against current listings before you apply.

Cable manufacturers and turnkey infrastructure firms form another route in. Sterlite Electric, for example, manufactures power cables, conductors and optical ground wire (OPGW), and delivers fibre deployment for telcos, hyperscalers and utilities. Its published products are mainly land-based and extra-high-voltage, so roles there build relevant cable, testing and jointing skills, even though submarine work is a separate specialism.

How to Become a Submarine Cable Engineer in India?

After Class 10

Choose the Science stream with Physics, Chemistry and Maths in Classes 11 and 12. Build interest in electronics, communication, maps and the sea through projects, reading and clubs.

After Class 12

Enter a B.E./B.Tech in Electronics and Communication, Telecommunication or Electrical Engineering. Admission usually depends on JEE Main or a state engineering entrance test, and then on counselling.

Undergraduate

Choose electives in optical communication, RF or power systems. Look for internships with telecom, cable or marine companies, and use college labs to practise fibre splicing and optical testing.

Postgraduate and Specialisation

Consider an M.E./M.Tech in optical or communication engineering, or in ocean or marine engineering, if you want a research or specialist route. GATE scores are used for many postgraduate and public-sector recruitment routes.

Licence / Certification

Look for training in fibre optic splicing and testing, and check what offshore and sea-safety certificates your employer requires. Many of these are company-run and are often provided after hiring.

First Job

Start as a graduate trainee or project engineer in cable installation, testing or project support with a telecom, cable or marine contractor. Move into submarine projects after field and sea exposure.

Defense Hardware & Tactical Systems

Electronics Engineer

Consumer Electronics & Wearables

Eligibility and Subjects Required

Stream and Subject Requirements

Science stream with Physics, Chemistry and Mathematics in Class 12 is the usual route into a B.E./B.Tech.
Strong maths and physics matter most, because cable design relies on signal theory, optics and electrical fundamentals.
Minimum marks differ by college and state. Check each institute's admission notice for current cut-offs, rather than relying on a single figure.

Minimum Qualification

A bachelor's degree in engineering (B.E./B.Tech) in Electronics, Telecommunication, Electrical or a related field is the usual entry qualification.
Experience in fibre optics, marine work or project support helps, but many employers train graduates on the job.
Sea-going and offshore roles usually need medical fitness and sea-safety training. Confirm the exact requirements with each employer.

Courses and Degrees for Submarine Cable Engineer

Undergraduate Degrees	Postgraduate Degrees	Diplomas	Certifications & Short-term Courses
B.E./B.Tech in Electronics and Communication Engineering (4 years) B.E./B.Tech in Telecommunication Engineering (4 years) B.E./B.Tech in Electrical and Electronics Engineering (4 years) B.Tech in Ocean Engineering or Naval Architecture (4 years, where offered)	M.E./M.Tech in Optical or Photonics Engineering (2 years, where offered) M.E./M.Tech in Communication Systems (2 years) M.Tech in Ocean Engineering (2 years, where offered)	Diploma in Electronics and Communication Engineering (3 years) Diploma in Marine Engineering (3 years, where offered)	Fibre optic splicing and testing course (a few weeks, varies by provider) Offshore and sea-safety training (duration varies by provider and employer) Cable jointing and testing workshops (duration varies by provider)

Undergraduate Degrees
- B.E./B.Tech in Electronics and Communication Engineering (4 years)
- B.E./B.Tech in Telecommunication Engineering (4 years)
- B.E./B.Tech in Electrical and Electronics Engineering (4 years)
- B.Tech in Ocean Engineering or Naval Architecture (4 years, where offered)
Postgraduate Degrees
- M.E./M.Tech in Optical or Photonics Engineering (2 years, where offered)
- M.E./M.Tech in Communication Systems (2 years)
- M.Tech in Ocean Engineering (2 years, where offered)
Diplomas
- Diploma in Electronics and Communication Engineering (3 years)
- Diploma in Marine Engineering (3 years, where offered)
Certifications & Short-term Courses
- Fibre optic splicing and testing course (a few weeks, varies by provider)
- Offshore and sea-safety training (duration varies by provider and employer)
- Cable jointing and testing workshops (duration varies by provider)

Entrance Exams for Submarine Cable Engineer

Exam	Level	Held	For Course
JEE Main	National, undergraduate	Typically twice a year	B.E./B.Tech in Electronics, Telecom, Electrical and related streams
GATE	National, postgraduate	Once a year, organised by IITs on rotation	M.E./M.Tech in relevant engineering streams; also used in some public-sector recruitment
State Engineering Entrance Tests (e.g., MHT-CET, KCET)	State, undergraduate	Usually once a year in each state	B.E./B.Tech admissions to state engineering colleges

Exam
JEE Main
Level
National, undergraduate
Held
Typically twice a year
For Course
B.E./B.Tech in Electronics, Telecom, Electrical and related streams
Exam
GATE
Level
National, postgraduate
Held
Once a year, organised by IITs on rotation
For Course
M.E./M.Tech in relevant engineering streams; also used in some public-sector recruitment
Exam
State Engineering Entrance Tests (e.g., MHT-CET, KCET)
Level
State, undergraduate
Held
Usually once a year in each state
For Course
B.E./B.Tech admissions to state engineering colleges

Top Colleges for Submarine Cable Engineer

Government Institutes

College	Location
IIT Madras	Chennai, Tamil Nadu
IIT Kharagpur	Kharagpur, West Bengal
IIT Bombay	Mumbai, Maharashtra
IIT Delhi	New Delhi, Delhi
NIT Tiruchirappalli	Tiruchirappalli, Tamil Nadu
Jadavpur University	Kolkata, West Bengal

College
IIT Madras
Location
Chennai, Tamil Nadu
College
IIT Kharagpur
Location
Kharagpur, West Bengal
College
IIT Bombay
Location
Mumbai, Maharashtra
College
IIT Delhi
Location
New Delhi, Delhi
College
NIT Tiruchirappalli
Location
Tiruchirappalli, Tamil Nadu
College
Jadavpur University
Location
Kolkata, West Bengal

Skills Required to Become a Submarine Cable Engineer

Technical Skills

Fibre optic splicing and OTDR testing
Electronics and communication fundamentals
Power systems basics for cable power feeds
Reading cable specifications and design drawings
Seabed and bathymetry data for route planning
Fault location techniques
Project planning and documentation tools

Soft Skills

Attention to detail
Teamwork across ship, shore and office teams
Calm decision-making under pressure
Clear written and verbal communication
Strict safety discipline

Submarine Cable Engineer Salary in India

0 to 2 years

Entry Level

To be verified before publishing

Typical job titles: Graduate Trainee, Junior Cable Engineer, Test Engineer
Work at this level: supporting testing, jointing, documentation and route data under a senior engineer

3 to 7 years

Mid Level

To be verified before publishing

Typical job titles: Cable Design Engineer, Installation Engineer, Project Engineer
Work at this level: leading parts of a survey, lay or repair task and coordinating with marine crews

8+ years

Senior Level

To be verified before publishing

Typical job titles: Project Manager, Lead Engineer, Head of Cable Operations
Work at this level: owning a full cable project, its budget, risk and delivery, and advising clients

Career Opportunities and Job Roles

Cable Route Survey Engineer

Plans the seabed route, water depths and landing points for a new cable.

Submarine Cable Design Engineer

Specifies fibre count, power feed, armouring and amplification for each section.

Cable Installation Engineer

Supervises cable laying and burial from the ship and at the shore end.

Jointing Engineer

Carries out and checks splices and joints on cable and repeater sections.

Cable Fault Repair Engineer

Locates breaks and coordinates repair ships and crews after damage.

Cable Testing and Quality Engineer

Runs factory and sea acceptance tests to confirm performance.

Network Monitoring Engineer

Tracks cable health and performance using optical monitoring systems.

Marine Telecom Project Manager

Plans schedule, budget and contractors for a cable deployment project.

Scope and Future of Submarine Cable Engineer in India

Demand for data keeps rising, and the networks that carry it depend on fibre. Telecom operators, cloud and data-centre companies, and cable-system builders all need engineers who can plan, build and maintain fibre routes. Sterlite Electric's public materials describe fibre deployment for telcos, hyperscalers and utilities, and show that fibre-based monitoring is moving into power and telecom cables. This suggests that cable skills are in demand across several sectors, although submarine-specific hiring is smaller and more specialised.

Growth is likely to come from new international cable routes, the upgrade of existing ones and the monitoring and repair work that keeps them running. Engineers who combine optical or power-cable knowledge with marine experience are best placed for these roles. Growth will also depend on current government digital infrastructure plans and on private investment, so check the latest announcements before deciding.

Overseas work is possible in international cable projects run by global operators and contractors. Such roles usually expect several years of field experience, strong safety records and, often, sea-going certifications. Starting in India on land-based or shore-end projects is a common way to build the experience needed for later overseas postings.

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